Kariuki33/AirBnB_clone_v2

HolbertonBnB

An AirBnB clone.

---

Description :house

HolbertonBnB is a complete web application, integrating database storage, a back-end API, and front-end interfacing in a clone of AirBnB.

The project currently only implements the back-end console.

Classes :cl

HolbertonBnB utilizes the following classes:

	BaseModel	FileStorage	User	State	City	Amenity	Place	Review
PUBLIC INSTANCE ATTRIBUTES	id created_at updated_at		Inherits from BaseModel	Inherits from BaseModel	Inherits from BaseModel	Inherits from BaseModel	Inherits from BaseModel	Inherits from BaseModel
PUBLIC INSTANCE METHODS	save to_dict	all new save reload	""	""	""	""	""	""
PUBLIC CLASS ATTRIBUTES			email password first_name last_name	name	state_id name	name	city_id user_id name description number_rooms number_bathrooms max_guest price_by_night latitude longitude amenity_ids	place_id user_id text
PRIVATE CLASS ATTRIBUTES		file_path objects

Storage :baggage_claim

The above classes are handled by the abstracted storage engine defined in the FileStorage class.

Every time the backend is initialized, HolbertonBnB instantiates an instance of FileStorage called storage. The storage object is loaded/re-loaded from any class instances stored in the JSON file file.json. As class instances are created, updated, or deleted, the storage object is used to register corresponding changes in the file.json.

Console :computer

The console is a command line interpreter that permits management of the backend of HolbertonBnB. It can be used to handle and manipulate all classes utilized by the application (achieved by calls on the storage object defined above).

Using the Console

The HolbertonBnB console can be run both interactively and non-interactively. To run the console in non-interactive mode, pipe any command(s) into an execution of the file console.py at the command line.

$ echo "help" | ./console.py
(hbnb)
Documented commands (type help <topic>):
========================================
EOF  all  count  create  destroy  help  quit  show  update

(hbnb)
$

Alternatively, to use the HolbertonBnB console in interactive mode, run the file console.py by itself:

./console.py

While running in interactive mode, the console displays a prompt for input:

$ ./console.py
(hbnb)

To quit the console, enter the command quit, or input an EOF signal (ctrl-D).

$ ./console.py
(hbnb) quit
$

$ ./console.py
(hbnb) EOF
$

Console Commands

The HolbertonBnB console supports the following commands:

• create
  • Usage: create <class>

Creates a new instance of a given class. The class' ID is printed and the instance is saved to the file file.json.

$ ./console.py
(hbnb) create BaseModel
119be863-6fe5-437e-a180-b9892e8746b8
(hbnb) quit
$ cat file.json ; echo ""
{"BaseModel.119be863-6fe5-437e-a180-b9892e8746b8": {"updated_at": "2019-02-17T2
1:30:42.215277", "created_at": "2019-02-17T21:30:42.215277", "__class__": "Base
Model", "id": "119be863-6fe5-437e-a180-b9892e8746b8"}}

• show
  • Usage: show <class> <id> or <class>.show(<id>)

Prints the string representation of a class instance based on a given id.

$ ./console.py
(hbnb) create User
1e32232d-5a63-4d92-8092-ac3240b29f46
(hbnb)
(hbnb) show User 1e32232d-5a63-4d92-8092-ac3240b29f46
[User] (1e32232d-5a63-4d92-8092-ac3240b29f46) {'id': '1e32232d-5a63-4d92-8092-a
c3240b29f46', 'created_at': datetime.datetime(2019, 2, 17, 21, 34, 3, 635828),
'updated_at': datetime.datetime(2019, 2, 17, 21, 34, 3, 635828)}
(hbnb)
(hbnb) User.show(1e32232d-5a63-4d92-8092-ac3240b29f46)
[User] (1e32232d-5a63-4d92-8092-ac3240b29f46) {'id': '1e32232d-5a63-4d92-8092-a
c3240b29f46', 'created_at': datetime.datetime(2019, 2, 17, 21, 34, 3, 635828),
'updated_at': datetime.datetime(2019, 2, 17, 21, 34, 3, 635828)}
(hbnb)

• destroy
  • Usage: destroy <class> <id> or <class>.destroy(<id>)

Deletes a class instance based on a given id. The storage file file.json is updated accordingly.

$ ./console.py
(hbnb) create State
d2d789cd-7427-4920-aaae-88cbcf8bffe2
(hbnb) create Place
3e-8329-4f47-9947-dca80c03d3ed
(hbnb)
(hbnb) destroy State d2d789cd-7427-4920-aaae-88cbcf8bffe2
(hbnb) Place.destroy(03486a3e-8329-4f47-9947-dca80c03d3ed)
(hbnb) quit
$ cat file.json ; echo ""
{}

• all
  • Usage: all or all <class> or <class>.all()

Prints the string representations of all instances of a given class. If no class name is provided, the command prints all instances of every class.

$ ./console.py
(hbnb) create BaseModel
fce2124c-8537-489b-956e-22da455cbee8
(hbnb) create BaseModel
450490fd-344e-47cf-8342-126244c2ba99
(hbnb) create User
b742dbc3-f4bf-425e-b1d4-165f52c6ff81
(hbnb) create User
8f2d75c8-fb82-48e1-8ae5-2544c909a9fe
(hbnb)
(hbnb) all BaseModel
["[BaseModel] (450490fd-344e-47cf-8342-126244c2ba99) {'updated_at': datetime.da
tetime(2019, 2, 17, 21, 45, 5, 963516), 'created_at': datetime.datetime(2019, 2
, 17, 21, 45, 5, 963516), 'id': '450490fd-344e-47cf-8342-126244c2ba99'}", "[Bas
eModel] (fce2124c-8537-489b-956e-22da455cbee8) {'updated_at': datetime.datetime
(2019, 2, 17, 21, 43, 56, 899348), 'created_at': datetime.datetime(2019, 2, 17,
21, 43, 56, 899348), 'id': 'fce2124c-8537-489b-956e-22da455cbee8'}"]
(hbnb)
(hbnb) User.all()
["[User] (8f2d75c8-fb82-48e1-8ae5-2544c909a9fe) {'updated_at': datetime.datetim
e(2019, 2, 17, 21, 44, 44, 428413), 'created_at': datetime.datetime(2019, 2, 17
, 21, 44, 44, 428413), 'id': '8f2d75c8-fb82-48e1-8ae5-2544c909a9fe'}", "[User]
(b742dbc3-f4bf-425e-b1d4-165f52c6ff81) {'updated_at': datetime.datetime(2019, 2
, 17, 21, 44, 15, 974608), 'created_at': datetime.datetime(2019, 2, 17, 21, 44,
15, 974608), 'id': 'b742dbc3-f4bf-425e-b1d4-165f52c6ff81'}"]
(hbnb)
(hbnb) all
["[User] (8f2d75c8-fb82-48e1-8ae5-2544c909a9fe) {'updated_at': datetime.datetim
e(2019, 2, 17, 21, 44, 44, 428413), 'created_at': datetime.datetime(2019, 2, 17
, 21, 44, 44, 428413), 'id': '8f2d75c8-fb82-48e1-8ae5-2544c909a9fe'}", "[BaseMo
del] (450490fd-344e-47cf-8342-126244c2ba99) {'updated_at': datetime.datetime(20
19, 2, 17, 21, 45, 5, 963516), 'created_at': datetime.datetime(2019, 2, 17, 21,
45, 5, 963516), 'id': '450490fd-344e-47cf-8342-126244c2ba99'}", "[User] (b742db
c3-f4bf-425e-b1d4-165f52c6ff81) {'updated_at': datetime.datetime(2019, 2, 17, 2
1, 44, 15, 974608), 'created_at': datetime.datetime(2019, 2, 17, 21, 44, 15, 97
4608), 'id': 'b742dbc3-f4bf-425e-b1d4-165f52c6ff81'}", "[BaseModel] (fce2124c-8
537-489b-956e-22da455cbee8) {'updated_at': datetime.datetime(2019, 2, 17, 21, 4
3, 56, 899348), 'created_at': datetime.datetime(2019, 2, 17, 21, 43, 56, 899348
), 'id': 'fce2124c-8537-489b-956e-22da455cbee8'}"]
(hbnb)

• count
  • Usage: count <class> or <class>.count()

Retrieves the number of instances of a given class.

$ ./console.py
(hbnb) create Place
12c73223-f3d3-4dec-9629-bd19c8fadd8a
(hbnb) create Place
aa229cbb-5b19-4c32-8562-f90a3437d301
(hbnb) create City
22a51611-17bd-4d8f-ba1b-3bf07d327208
(hbnb)
(hbnb) count Place
2
(hbnb) city.count()
1
(hbnb)

• update
  • Usage: update <class> <id> <attribute name> "<attribute value>" or <class>.update(<id>, <attribute name>, <attribute value>) or <class>.update( <id>, <attribute dictionary>).

Updates a class instance based on a given id with a given key/value attribute pair or dictionary of attribute pairs. If update is called with a single key/value attribute pair, only "simple" attributes can be updated (ie. not id, created_at, and updated_at). However, any attribute can be updated by providing a dictionary.

$ ./console.py
(hbnb) create User
6f348019-0499-420f-8eec-ef0fdc863c02
(hbnb)
(hbnb) update User 6f348019-0499-420f-8eec-ef0fdc863c02 first_name "Holberton"
(hbnb) show User 6f348019-0499-420f-8eec-ef0fdc863c02
[User] (6f348019-0499-420f-8eec-ef0fdc863c02) {'created_at': datetime.datetime(
2019, 2, 17, 21, 54, 39, 234382), 'first_name': 'Holberton', 'updated_at': date
time.datetime(2019, 2, 17, 21, 54, 39, 234382), 'id': '6f348019-0499-420f-8eec-
ef0fdc863c02'}
(hbnb)
(hbnb) User.update(6f348019-0499-420f-8eec-ef0fdc863c02, address, "98 Mission S
t")
(hbnb) User.show(6f348019-0499-420f-8eec-ef0fdc863c02)
[User] (6f348019-0499-420f-8eec-ef0fdc863c02) {'created_at': datetime.datetime(
2019, 2, 17, 21, 54, 39, 234382), 'address': '98 Mission St', 'first_name': 'Ho
lberton', 'updated_at': datetime.datetime(2019, 2, 17, 21, 54, 39, 234382), 'id
': '6f348019-0499-420f-8eec-ef0fdc863c02'}
(hbnb)
(hbnb) User.update(6f348019-0499-420f-8eec-ef0fdc863c02, {'email': 'holberton@h
olberton.com', 'last_name': 'School'})
[User] (6f348019-0499-420f-8eec-ef0fdc863c02) {'email': 'holberton@holberton.co
m', 'first_name': 'Holberton', 'updated_at': datetime.datetime(2019, 2, 17, 21,
54, 39, 234382), 'address': '98 Mission St', 'last_name': 'School', 'id': '6f34
8019-0499-420f-8eec-ef0fdc863c02', 'created_at': datetime.datetime(2019, 2, 17,
21, 54, 39, 234382)}
(hbnb)

Testing :straight_ruler

Unittests for the HolbertonBnB project are defined in the tests folder. To run the entire test suite simultaneously, execute the following command:

python3 unittest -m discover tests

Alternatively, you can specify a single test file to run at a time:

python3 unittest -m tests/test_console.py

0x00. AirBnB clone - The console Docs

• By - Dennis Nderitu and Lucy Njeri

• Weight : 5

Concepts

• Python packages
• AirBnB clone

First step: Write a command interpreter to manage your AirBnB objects. This is the first step towards building your first full web application: the AirBnB clone. This first step is very important because you will use what you build during this project with all other following projects: HTML/CSS templating, database storage, API, front-end integration…

Each task is linked and will help you to:

• put in place a parent class (called BaseModel) to take care of the initialization, serialization and deserialization of your future instances
• create a simple flow of serialization/deserialization: Instance <-> Dictionary <-> JSON string <-> file
• create all classes used for AirBnB (User, State, City, Place…) that inherit from BaseModel
• create the first abstracted storage engine of the project: File storage.
• create all unittests to validate all our classes and storage engine

What’s a command interpreter?

Do you remember the Shell? It’s exactly the same but limited to a specific use-case. In our case, we want to be able to manage the objects of our project:

• Create a new object (ex: a new User or a new Place)
• Retrieve an object from a file, a database etc…
• Do operations on objects (count, compute stats, etc…)
• Update attributes of an object
• Destroy an object

Resources

• Read or watch:

• cmd module

• cmd module in depth

• packages concept page

• uuid module

• datetime

• unittest module

• args/kwargs

• Python test cheatsheet

• cmd module wiki page

• python unittest

General

• How to create a Python package
• How to create a command interpreter in Python using the cmd module
• What is Unit testing and how to implement it in a large project
• How to serialize and deserialize a Class
• How to write and read a JSON file
• How to manage datetime
• What is an UUID
• What is *args and how to use it
• What is **kwargs and how to use it
• How to handle named arguments in a function

More Info

Execution

• Your shell should work like this in interactive mode:

$ ./console.py
(hbnb) help

Documented commands (type help <topic>):
========================================
EOF  help  quit

(hbnb)
(hbnb)
(hbnb) quit
$

But also in non-interactive mode: (like the Shell project in C)

$ echo "help" | ./console.py
(hbnb)

Documented commands (type help <topic>):
========================================
EOF  help  quit
(hbnb)
$
$ cat test_help
help
$
$ cat test_help | ./console.py
(hbnb)

Documented commands (type help <topic>):
========================================
EOF  help  quit
(hbnb)
$

All tests should also pass in non-interactive mode: $ echo "python3 -m unittest discover tests" | bash

Tasks

0. README, AUTHORS

• Write a README.md:

  • description of the project
  • description of the command interpreter:
    • how to start it
    • how to use it
    • examples

• You should have an AUTHORS file at the root of your repository, listing all individuals having contributed content to the repository. For format, reference Docker’s AUTHORS page

• You should use branches and pull requests on GitHub - it will help you as team to organize your work

Repo:

• GitHub repository: AirBnB_clone
• File: README.md, AUTHORS

1. Be pycodestyle compliant

Write beautiful code that passes the pycodestyle checks.

Repo:

• GitHub repository: AirBnB_clone

2. Unittests

• All your files, classes, functions must be tested with unit tests

guillaume@ubuntu:~/AirBnB$ python3 -m unittest discover tests
...................................................................................
...................................................................................
.......................
----------------------------------------------------------------------
Ran 189 tests in 13.135s

OK
guillaume@ubuntu:~/AirBnB$

Note that this is just an example, the number of tests you create can be different from the above example.

Warning

• Unit tests must also pass in non-interactive mode:

guillaume@ubuntu:~/AirBnB$ echo "python3 -m unittest discover tests" | bash
...................................................................................
...................................................................................
.......................
----------------------------------------------------------------------
Ran 189 tests in 13.135s

OK
guillaume@ubuntu:~/AirBnB$

Repo:

• GitHub repository: AirBnB_clone
• File: tests/

3. BaseModel

Write a class BaseModel that defines all common attributes/methods for other classes:

• models/base_model.py

• Public instance attributes:

  • id: string - assign with an uuid when an instance is created:
    • you can use uuid.uuid4() to generate unique id but don’t forget to convert to a string
    • the goal is to have unique id for each BaseModel
    • created_at: datetime - assign with the current datetime when an instance is created
    • updated_at: datetime - assign with the current datetime when an instance is created and it will be updated every time you change your object

• __str__: should print: [<class name>] (<self.id>) <self.**dict**>

• Public instance methods:

  • save(self): updates the public instance attribute updated_at with the current datetime
  • to_dict(self): returns a dictionary containing all keys/values of __dict__ of the instance:
    • by using self.__dict__, only instance attributes set will be returned
    • a key __class__ must be added to this dictionary with the class name of the object
    • created_at and updated_at must be converted to string object in ISO format:
      • format: %Y-%m-%dT%H:%M:%S.%f (ex: 2017-06-14T22:31:03.285259)
      • you can use isoformat() of datetime object
  • This method will be the first piece of the serialization/deserialization process: create a dictionary representation with “simple object type” of our BaseModel

guillaume@ubuntu:~/AirBnB$ cat test_base_model.py
#!/usr/bin/python3
from models.base_model import BaseModel

my_model = BaseModel()
my_model.name = "My First Model"
my_model.my_number = 89
print(my_model)
my_model.save()
print(my_model)
my_model_json = my_model.to_dict()
print(my_model_json)
print("JSON of my_model:")
for key in my_model_json.keys():
    print("\t{}: ({}) - {}".format(key, type(my_model_json[key]), my_model_json[key]))

guillaume@ubuntu:~/AirBnB$ ./test_base_model.py
[BaseModel] (b6a6e15c-c67d-4312-9a75-9d084935e579) {'my_number': 89, 'name': 'My First Model', 'updated_at': datetime.datetime(2017, 9, 28, 21, 5, 54, 119434), 'id': 'b6a6e15c-c67d-4312-9a75-9d084935e579', 'created_at': datetime.datetime(2017, 9, 28, 21, 5, 54, 119427)}
[BaseModel] (b6a6e15c-c67d-4312-9a75-9d084935e579) {'my_number': 89, 'name': 'My First Model', 'updated_at': datetime.datetime(2017, 9, 28, 21, 5, 54, 119572), 'id': 'b6a6e15c-c67d-4312-9a75-9d084935e579', 'created_at': datetime.datetime(2017, 9, 28, 21, 5, 54, 119427)}
{'my_number': 89, 'name': 'My First Model', '__class__': 'BaseModel', 'updated_at': '2017-09-28T21:05:54.119572', 'id': 'b6a6e15c-c67d-4312-9a75-9d084935e579', 'created_at': '2017-09-28T21:05:54.119427'}
JSON of my_model:
    my_number: (<class 'int'>) - 89
    name: (<class 'str'>) - My First Model
    __class__: (<class 'str'>) - BaseModel
    updated_at: (<class 'str'>) - 2017-09-28T21:05:54.119572
    id: (<class 'str'>) - b6a6e15c-c67d-4312-9a75-9d084935e579
    created_at: (<class 'str'>) - 2017-09-28T21:05:54.119427

guillaume@ubuntu:~/AirBnB$

Repo:

• GitHub repository: AirBnB_clone
• File: models/base_model.py, models/__init__.py, tests/

4. Create BaseModel from dictionary

Previously we created a method to generate a dictionary representation of an instance (method to_dict()).

Now it’s time to re-create an instance with this dictionary representation.

<class 'BaseModel'> -> to_dict() -> <class 'dict'> -> <class 'BaseModel'>

Update models/base_model.py:

• __init__(self, *args, **kwargs):
  • you will use *args,**kwargs arguments for the constructor of a BaseModel. (more information inside the AirBnB clone concept page)
  • *args won’t be used
  • if kwargs is not empty:
    • each key of this dictionary is an attribute name (Note __class__ from kwargs is the only one that should not be added as an attribute. See the example output, below)
    • each value of this dictionary is the value of this attribute name
    • Warning: created_at and updated_at are strings in this dictionary, but inside your BaseModel instance is working with datetime object. You have to convert these strings into datetime object. Tip: you know the string format of these datetime
  • otherwise:
    • create id and created_at as you did previously (new instance)

guillaume@ubuntu:~/AirBnB$ cat test_base_model_dict.py
#!/usr/bin/python3
from models.base_model import BaseModel

my_model = BaseModel()
my_model.name = "My_First_Model"
my_model.my_number = 89
print(my_model.id)
print(my_model)
print(type(my_model.created_at))
print("--")
my_model_json = my_model.to_dict()
print(my_model_json)
print("JSON of my_model:")
for key in my_model_json.keys():
    print("\t{}: ({}) - {}".format(key, type(my_model_json[key]), my_model_json[key]))

print("--")
my_new_model = BaseModel(**my_model_json)
print(my_new_model.id)
print(my_new_model)
print(type(my_new_model.created_at))

print("--")
print(my_model is my_new_model)

guillaume@ubuntu:~/AirBnB$ ./test_base_model_dict.py
56d43177-cc5f-4d6c-a0c1-e167f8c27337
[BaseModel] (56d43177-cc5f-4d6c-a0c1-e167f8c27337) {'id': '56d43177-cc5f-4d6c-a0c1-e167f8c27337', 'created_at': datetime.datetime(2017, 9, 28, 21, 3, 54, 52298), 'my_number': 89, 'updated_at': datetime.datetime(2017, 9, 28, 21, 3, 54, 52302), 'name': 'My_First_Model'}
<class 'datetime.datetime'>
--
{'id': '56d43177-cc5f-4d6c-a0c1-e167f8c27337', 'created_at': '2017-09-28T21:03:54.052298', '__class__': 'BaseModel', 'my_number': 89, 'updated_at': '2017-09-28T21:03:54.052302', 'name': 'My_First_Model'}
JSON of my_model:
    id: (<class 'str'>) - 56d43177-cc5f-4d6c-a0c1-e167f8c27337
    created_at: (<class 'str'>) - 2017-09-28T21:03:54.052298
    __class__: (<class 'str'>) - BaseModel
    my_number: (<class 'int'>) - 89
    updated_at: (<class 'str'>) - 2017-09-28T21:03:54.052302
    name: (<class 'str'>) - My_First_Model
--
56d43177-cc5f-4d6c-a0c1-e167f8c27337
[BaseModel] (56d43177-cc5f-4d6c-a0c1-e167f8c27337) {'id': '56d43177-cc5f-4d6c-a0c1-e167f8c27337', 'created_at': datetime.datetime(2017, 9, 28, 21, 3, 54, 52298), 'my_number': 89, 'updated_at': datetime.datetime(2017, 9, 28, 21, 3, 54, 52302), 'name': 'My_First_Model'}
<class 'datetime.datetime'>
--
False
guillaume@ubuntu:~/AirBnB$

Repo:

• GitHub repository: AirBnB_clone
• File: models/base_model.py, tests/

5. Store first object

Now we can recreate a BaseModel from another one by using a dictionary representation:

<class 'BaseModel'> -> to_dict() -> <class 'dict'> -> <class 'BaseModel'>

It’s great but it’s still not persistent: every time you launch the program, you don’t restore all objects created before… The first way you will see here is to save these objects to a file.

Writing the dictionary representation to a file won’t be relevant:

• Python doesn’t know how to convert a string to a dictionary (easily)
• It’s not human readable
• Using this file with another program in Python or other language will be hard.

So, you will convert the dictionary representation to a JSON string. JSON is a standard representation of a data structure. With this format, humans can read and all programming languages have a JSON reader and writer.

Now the flow of serialization-deserialization will be:

<class 'BaseModel'> -> to_dict() -> <class 'dict'> -> JSON dump -> <class 'str'> -> FILE -> <class 'str'> -> JSON load -> <class 'dict'> -> <class 'BaseModel'>

Magic right?

Terms:

• simple Python data structure: Dictionaries, arrays, number and string. ex: { '12': { 'numbers': [1, 2, 3], 'name': "John" } }

• JSON string representation: String representing a simple data structure in JSON format. ex: '{ "12": { "numbers": [1, 2, 3], "name": "John" } }'

Write a class FileStorage that serializes instances to a JSON file and deserializes JSON file to instances:

• models/engine/file_storage.py

• Private class attributes:

  * `__file_path:` string - path to the JSON file (ex: `file.json`)
  * `__objects`: dictionary - empty but will store all objects by `<class name>.id` (ex: to store a `BaseModel` object with `id=12121212`, the key will be `BaseModel.12121212`)
  

• Public instance methods

  • all(self): returns the dictionary __objects
  • new(self, obj): sets in __objects the obj with key <obj class name>.id
  • save(self): serializes __objects to the JSON file (path:__file_path)
  • reload(self): deserializes the JSON file to __objects (only if the JSON file (__file_path) exists ; otherwise, do nothing. If the file doesn’t exist, no exception should be raised)

• Update models/**init**.py: to create a unique FileStorage instance for your application

  • import file_storage.py
  • create the variable storage, an instance of FileStorage
  • call reload() method on this variable

• Update models/base_model.py: to link your BaseModel to FileStorage by using the variable storage

• import the variable storage

• in the method save(self):

  • call save(self) method of storage

• **init**(self, *args, **kwargs):

  • if it’s a new instance (not from a dictionary representation), add a call to the method new(self) on storage

guillaume@ubuntu:~/AirBnB$ cat test_save_reload_base_model.py
#!/usr/bin/python3
from models import storage
from models.base_model import BaseModel

all_objs = storage.all()
print("-- Reloaded objects --")
for obj_id in all_objs.keys():
    obj = all_objs[obj_id]
    print(obj)

print("-- Create a new object --")
my_model = BaseModel()
my_model.name = "My_First_Model"
my_model.my_number = 89
my_model.save()
print(my_model)

guillaume@ubuntu:~/AirBnB$ cat file.json
cat: file.json: No such file or directory
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ ./test_save_reload_base_model.py
-- Reloaded objects --
-- Create a new object --
[BaseModel] (ee49c413-023a-4b49-bd28-f2936c95460d) {'my_number': 89, 'updated_at': datetime.datetime(2017, 9, 28, 21, 7, 25, 47381), 'created_at': datetime.datetime(2017, 9, 28, 21, 7, 25, 47372), 'name': 'My_First_Model', 'id': 'ee49c413-023a-4b49-bd28-f2936c95460d'}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ cat file.json ; echo ""
{"BaseModel.ee49c413-023a-4b49-bd28-f2936c95460d": {"my_number": 89, "__class__": "BaseModel", "updated_at": "2017-09-28T21:07:25.047381", "created_at": "2017-09-28T21:07:25.047372", "name": "My_First_Model", "id": "ee49c413-023a-4b49-bd28-f2936c95460d"}}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ ./test_save_reload_base_model.py
-- Reloaded objects --
[BaseModel] (ee49c413-023a-4b49-bd28-f2936c95460d) {'name': 'My_First_Model', 'id': 'ee49c413-023a-4b49-bd28-f2936c95460d', 'updated_at': datetime.datetime(2017, 9, 28, 21, 7, 25, 47381), 'my_number': 89, 'created_at': datetime.datetime(2017, 9, 28, 21, 7, 25, 47372)}
-- Create a new object --
[BaseModel] (080cce84-c574-4230-b82a-9acb74ad5e8c) {'name': 'My_First_Model', 'id': '080cce84-c574-4230-b82a-9acb74ad5e8c', 'updated_at': datetime.datetime(2017, 9, 28, 21, 7, 51, 973308), 'my_number': 89, 'created_at': datetime.datetime(2017, 9, 28, 21, 7, 51, 973301)}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ ./test_save_reload_base_model.py
-- Reloaded objects --
[BaseModel] (080cce84-c574-4230-b82a-9acb74ad5e8c) {'id': '080cce84-c574-4230-b82a-9acb74ad5e8c', 'updated_at': datetime.datetime(2017, 9, 28, 21, 7, 51, 973308), 'created_at': datetime.datetime(2017, 9, 28, 21, 7, 51, 973301), 'name': 'My_First_Model', 'my_number': 89}
[BaseModel] (ee49c413-023a-4b49-bd28-f2936c95460d) {'id': 'ee49c413-023a-4b49-bd28-f2936c95460d', 'updated_at': datetime.datetime(2017, 9, 28, 21, 7, 25, 47381), 'created_at': datetime.datetime(2017, 9, 28, 21, 7, 25, 47372), 'name': 'My_First_Model', 'my_number': 89}
-- Create a new object --
[BaseModel] (e79e744a-55d4-45a3-b74a-ca5fae74e0e2) {'id': 'e79e744a-55d4-45a3-b74a-ca5fae74e0e2', 'updated_at': datetime.datetime(2017, 9, 28, 21, 8, 6, 151750), 'created_at': datetime.datetime(2017, 9, 28, 21, 8, 6, 151711), 'name': 'My_First_Model', 'my_number': 89}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ cat file.json ; echo ""
{"BaseModel.e79e744a-55d4-45a3-b74a-ca5fae74e0e2": {"__class__": "BaseModel", "id": "e79e744a-55d4-45a3-b74a-ca5fae74e0e2", "updated_at": "2017-09-28T21:08:06.151750", "created_at": "2017-09-28T21:08:06.151711", "name": "My_First_Model", "my_number": 89}, "BaseModel.080cce84-c574-4230-b82a-9acb74ad5e8c": {"__class__": "BaseModel", "id": "080cce84-c574-4230-b82a-9acb74ad5e8c", "updated_at": "2017-09-28T21:07:51.973308", "created_at": "2017-09-28T21:07:51.973301", "name": "My_First_Model", "my_number": 89}, "BaseModel.ee49c413-023a-4b49-bd28-f2936c95460d": {"__class__": "BaseModel", "id": "ee49c413-023a-4b49-bd28-f2936c95460d", "updated_at": "2017-09-28T21:07:25.047381", "created_at": "2017-09-28T21:07:25.047372", "name": "My_First_Model", "my_number": 89}}
guillaume@ubuntu:~/AirBnB$

Repo:

• GitHub repository: AirBnB_clone
• File: models/engine/file_storage.py, models/engine/__init__.py, models/__init__.py, models/base_model.py, tests/

6. Console 0.0.1

Write a program called console.py that contains the entry point of the command interpreter:

• You must use the module cmd
• Your class definition must be: class HBNBCommand(cmd.Cmd):
• Your command interpreter should implement: - quit and EOF to exit the program - help (this action is provided by default by cmd but you should keep it updated and documented as you work through tasks) - a custom prompt: (hbnb) - an empty line + ENTER shouldn’t execute anything
• Your code should not be executed when imported

Warning:

You should end your file with:

if __name__ == '__main__':
    HBNBCommand().cmdloop()

to make your program executable except when imported. Please don’t add anything around - the Checker won’t like it otherwise

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) help

Documented commands (type help <topic>):
========================================
EOF  help  quit

(hbnb)
(hbnb) help quit
Quit command to exit the program

(hbnb)
(hbnb)
(hbnb) quit
guillaume@ubuntu:~/AirBnB$

NO UNITTESTS NEEDED

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

7. Console 0.1

Update your command interpreter (console.py) to have these commands:

• create: Creates a new instance of BaseModel, saves it (to the JSON file) and prints the id. Ex: $ create BaseModel

  • If the class name is missing, print **class name missing** (ex: $ create)
  • If the class name doesn’t exist, print **class doesn't exist** (ex: $ create MyModel)

• show: Prints the string representation of an instance based on the class name and id. Ex: $ show BaseModel 1234-1234-1234.

  • If the class name is missing, print **class name missing** (ex: $ show)
  • If the class name doesn’t exist, print **class doesn't exist** (ex: $ show MyModel)
  • If the id is missing, print **instance id missing** (ex: $ show BaseModel)
  • If the instance of the class name doesn’t exist for the id, print **no instance found** (ex: $ show BaseModel 121212)

• destroy: Deletes an instance based on the class name and id (save the change into the JSON file). Ex: $ destroy BaseModel 1234-1234-1234. - If the class name is missing, print **class name missing** (ex: $ destroy) - If the class name doesn’t exist, print **class doesn't exist** (ex:$ destroy - MyModel) - If the id is missing, print **instance id missing** (ex: $ destroy BaseModel) - If the instance of the class name doesn’t exist for the id, print **no instance found** (ex: $ destroy BaseModel 121212)

• all: Prints all string representation of all instances based or not on the class name. Ex: $ all BaseModel or $ all. - The printed result must be a list of strings (like the example below) - If the class name doesn’t exist, print **class doesn't exist** (ex: $ all MyModel)

• update: Updates an instance based on the class name and id by adding or updating attribute (save the change into the JSON file). Ex: $ update BaseModel 1234-1234-1234 email "aibnb@mail.com".

  • Usage: update <class name> <id> <attribute name> "<attribute value>"
  • Only one attribute can be updated at the time
  • You can assume the attribute name is valid (exists for this model)
  • The attribute value must be casted to the attribute type
  • If the class name is missing, print **class name missing** (ex: $ update)
  • If the class name doesn’t exist, print **class doesn't exist** (ex: $ update MyModel)
  • If the id is missing, print **instance id missing** (ex: $ update BaseModel)
  • If the instance of the class name doesn’t exist for the id, print **no instance found** (ex: $ update BaseModel 121212)
  • If the attribute name is missing, print **attribute name missing** (ex: $ update BaseModel existing-id)
  • If the value for the attribute name doesn’t exist, print **value missing** (ex: $ update BaseModel existing-id first_name)
  • All other arguments should not be used (Ex: $ update BaseModel 1234-1234-1234 email "aibnb@mail.com" first_name "Betty" = $ update BaseModel 1234-1234-1234 email "aibnb@mail.com")
  • id, created_at and updated_at can't be updated. You can assume they won’t be passed in the update command
  • Only “simple” arguments can be updated: string, integer and float. You can assume nobody will try to update list of ids or datetime

• Let’s add some rules:

  • You can assume arguments are always in the right order
  • Each arguments are separated by a space
  • A string argument with a space must be between double quote
  • The error management starts from the first argument to the last one

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) all MyModel
** class doesn't exist **
(hbnb) show BaseModel
** instance id missing **
(hbnb) show BaseModel My_First_Model
** no instance found **
(hbnb) create BaseModel
49faff9a-6318-451f-87b6-910505c55907
(hbnb) all BaseModel
["[BaseModel] (49faff9a-6318-451f-87b6-910505c55907) {'created_at': datetime.datetime(2017, 10, 2, 3, 10, 25, 903293), 'id': '49faff9a-6318-451f-87b6-910505c55907', 'updated_at': datetime.datetime(2017, 10, 2, 3, 10, 25, 903300)}"]
(hbnb) show BaseModel 49faff9a-6318-451f-87b6-910505c55907
[BaseModel] (49faff9a-6318-451f-87b6-910505c55907) {'created_at': datetime.datetime(2017, 10, 2, 3, 10, 25, 903293), 'id': '49faff9a-6318-451f-87b6-910505c55907', 'updated_at': datetime.datetime(2017, 10, 2, 3, 10, 25, 903300)}
(hbnb) destroy
** class name missing **
(hbnb) update BaseModel 49faff9a-6318-451f-87b6-910505c55907 first_name "Betty"
(hbnb) show BaseModel 49faff9a-6318-451f-87b6-910505c55907
[BaseModel] (49faff9a-6318-451f-87b6-910505c55907) {'first_name': 'Betty', 'id': '49faff9a-6318-451f-87b6-910505c55907', 'created_at': datetime.datetime(2017, 10, 2, 3, 10, 25, 903293), 'updated_at': datetime.datetime(2017, 10, 2, 3, 11, 3, 49401)}
(hbnb) create BaseModel
2dd6ef5c-467c-4f82-9521-a772ea7d84e9
(hbnb) all BaseModel
["[BaseModel] (2dd6ef5c-467c-4f82-9521-a772ea7d84e9) {'id': '2dd6ef5c-467c-4f82-9521-a772ea7d84e9', 'created_at': datetime.datetime(2017, 10, 2, 3, 11, 23, 639717), 'updated_at': datetime.datetime(2017, 10, 2, 3, 11, 23, 639724)}", "[BaseModel] (49faff9a-6318-451f-87b6-910505c55907) {'first_name': 'Betty', 'id': '49faff9a-6318-451f-87b6-910505c55907', 'created_at': datetime.datetime(2017, 10, 2, 3, 10, 25, 903293), 'updated_at': datetime.datetime(2017, 10, 2, 3, 11, 3, 49401)}"]
(hbnb) destroy BaseModel 49faff9a-6318-451f-87b6-910505c55907
(hbnb) show BaseModel 49faff9a-6318-451f-87b6-910505c55907
** no instance found **
(hbnb)

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

8. First User

Write a class User that inherits from BaseModel:

• models/user.py
• Public class attributes:
  • email: string - empty string
  • password: string - empty string
  • first_name: string - empty string
  • last_name: string - empty string

Update FileStorage to manage correctly serialization and deserialization of User.

Update your command interpreter (console.py) to allow show, create, destroy, update and all used with User.

guillaume@ubuntu:~/AirBnB$ cat test_save_reload_user.py
#!/usr/bin/python3
from models import storage
from models.base_model import BaseModel
from models.user import User

all_objs = storage.all()
print("-- Reloaded objects --")
for obj_id in all_objs.keys():
    obj = all_objs[obj_id]
    print(obj)

print("-- Create a new User --")
my_user = User()
my_user.first_name = "Betty"
my_user.last_name = "Bar"
my_user.email = "airbnb@mail.com"
my_user.password = "root"
my_user.save()
print(my_user)

print("-- Create a new User 2 --")
my_user2 = User()
my_user2.first_name = "John"
my_user2.email = "airbnb2@mail.com"
my_user2.password = "root"
my_user2.save()
print(my_user2)

guillaume@ubuntu:~/AirBnB$ cat file.json ; echo ""
{"BaseModel.2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4": {"__class__": "BaseModel", "id": "2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4", "updated_at": "2017-09-28T21:11:14.333862", "created_at": "2017-09-28T21:11:14.333852"}, "BaseModel.a42ee380-c959-450e-ad29-c840a898cfce": {"__class__": "BaseModel", "id": "a42ee380-c959-450e-ad29-c840a898cfce", "updated_at": "2017-09-28T21:11:15.504296", "created_at": "2017-09-28T21:11:15.504287"}, "BaseModel.af9b4cbd-2ce1-4e6e-8259-f578097dd15f": {"__class__": "BaseModel", "id": "af9b4cbd-2ce1-4e6e-8259-f578097dd15f", "updated_at": "2017-09-28T21:11:12.971544", "created_at": "2017-09-28T21:11:12.971521"}, "BaseModel.38a22b25-ae9c-4fa9-9f94-59b3eb51bfba": {"__class__": "BaseModel", "id": "38a22b25-ae9c-4fa9-9f94-59b3eb51bfba", "updated_at": "2017-09-28T21:11:13.753347", "created_at": "2017-09-28T21:11:13.753337"}, "BaseModel.9bf17966-b092-4996-bd33-26a5353cccb4": {"__class__": "BaseModel", "id": "9bf17966-b092-4996-bd33-26a5353cccb4", "updated_at": "2017-09-28T21:11:14.963058", "created_at": "2017-09-28T21:11:14.963049"}}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ ./test_save_reload_user.py
-- Reloaded objects --
[BaseModel] (38a22b25-ae9c-4fa9-9f94-59b3eb51bfba) {'id': '38a22b25-ae9c-4fa9-9f94-59b3eb51bfba', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 13, 753337), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 13, 753347)}
[BaseModel] (9bf17966-b092-4996-bd33-26a5353cccb4) {'id': '9bf17966-b092-4996-bd33-26a5353cccb4', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 963049), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 963058)}
[BaseModel] (2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4) {'id': '2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 333852), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 333862)}
[BaseModel] (a42ee380-c959-450e-ad29-c840a898cfce) {'id': 'a42ee380-c959-450e-ad29-c840a898cfce', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 15, 504287), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 15, 504296)}
[BaseModel] (af9b4cbd-2ce1-4e6e-8259-f578097dd15f) {'id': 'af9b4cbd-2ce1-4e6e-8259-f578097dd15f', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 12, 971521), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 12, 971544)}
-- Create a new User --
[User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'id': '38f22813-2753-4d42-b37c-57a17f1e4f88', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848291), 'email': 'airbnb@mail.com', 'first_name': 'Betty', 'last_name': 'Bar', 'password': 'root'}
-- Create a new User 2 --
[User] (d0ef8146-4664-4de5-8e89-096d667b728e) {'id': 'd0ef8146-4664-4de5-8e89-096d667b728e', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848280), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848294), 'email': 'airbnb2@mail.com', 'first_name': 'John', 'password': 'root'}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ cat file.json ; echo ""
{"BaseModel.af9b4cbd-2ce1-4e6e-8259-f578097dd15f": {"id": "af9b4cbd-2ce1-4e6e-8259-f578097dd15f", "updated_at": "2017-09-28T21:11:12.971544", "created_at": "2017-09-28T21:11:12.971521", "__class__": "BaseModel"}, "BaseModel.38a22b25-ae9c-4fa9-9f94-59b3eb51bfba": {"id": "38a22b25-ae9c-4fa9-9f94-59b3eb51bfba", "updated_at": "2017-09-28T21:11:13.753347", "created_at": "2017-09-28T21:11:13.753337", "__class__": "BaseModel"}, "BaseModel.9bf17966-b092-4996-bd33-26a5353cccb4": {"id": "9bf17966-b092-4996-bd33-26a5353cccb4", "updated_at": "2017-09-28T21:11:14.963058", "created_at": "2017-09-28T21:11:14.963049", "__class__": "BaseModel"}, "BaseModel.2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4": {"id": "2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4", "updated_at": "2017-09-28T21:11:14.333862", "created_at": "2017-09-28T21:11:14.333852", "__class__": "BaseModel"}, "BaseModel.a42ee380-c959-450e-ad29-c840a898cfce": {"id": "a42ee380-c959-450e-ad29-c840a898cfce", "updated_at": "2017-09-28T21:11:15.504296", "created_at": "2017-09-28T21:11:15.504287", "__class__": "BaseModel"}, "User.38f22813-2753-4d42-b37c-57a17f1e4f88": {"id": "38f22813-2753-4d42-b37c-57a17f1e4f88", "created_at": "2017-09-28T21:11:42.848279", "updated_at": "2017-09-28T21:11:42.848291", "email": "airbnb@mail.com", "first_name": "Betty", "__class__": "User", "last_name": "Bar", "password": "root"}, "User.d0ef8146-4664-4de5-8e89-096d667b728e": {"id": "d0ef8146-4664-4de5-8e89-096d667b728e", "created_at": "2017-09-28T21:11:42.848280", "updated_at": "2017-09-28T21:11:42.848294", "email": "airbnb_2@mail.com", "first_name": "John", "__class__": "User", "password": "root"}}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ ./test_save_reload_user.py
-- Reloaded objects --
[BaseModel] (af9b4cbd-2ce1-4e6e-8259-f578097dd15f) {'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 12, 971544), 'id': 'af9b4cbd-2ce1-4e6e-8259-f578097dd15f', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 12, 971521)}
[BaseModel] (2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4) {'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 333862), 'id': '2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 333852)}
[BaseModel] (9bf17966-b092-4996-bd33-26a5353cccb4) {'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 963058), 'id': '9bf17966-b092-4996-bd33-26a5353cccb4', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 14, 963049)}
[BaseModel] (a42ee380-c959-450e-ad29-c840a898cfce) {'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 15, 504296), 'id': 'a42ee380-c959-450e-ad29-c840a898cfce', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 15, 504287)}
[BaseModel] (38a22b25-ae9c-4fa9-9f94-59b3eb51bfba) {'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 13, 753347), 'id': '38a22b25-ae9c-4fa9-9f94-59b3eb51bfba', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 13, 753337)}
[User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'password': '63a9f0ea7bb98050796b649e85481845', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'email': 'airbnb@mail.com', 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848291), 'last_name': 'Bar', 'id': '38f22813-2753-4d42-b37c-57a17f1e4f88', 'first_name': 'Betty'}
[User] (d0ef8146-4664-4de5-8e89-096d667b728e) {'password': '63a9f0ea7bb98050796b649e85481845', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848280), 'email': 'airbnb_2@mail.com', 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848294), 'id': 'd0ef8146-4664-4de5-8e89-096d667b728e', 'first_name': 'John'}
-- Create a new User --
[User] (246c227a-d5c1-403d-9bc7-6a47bb9f0f68) {'password': 'root', 'created_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611352), 'email': 'airbnb@mail.com', 'updated_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611363), 'last_name': 'Bar', 'id': '246c227a-d5c1-403d-9bc7-6a47bb9f0f68', 'first_name': 'Betty'}
-- Create a new User 2 --
[User] (fce12f8a-fdb6-439a-afe8-2881754de71c) {'password': 'root', 'created_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611354), 'email': 'airbnb_2@mail.com', 'updated_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611368), 'id': 'fce12f8a-fdb6-439a-afe8-2881754de71c', 'first_name': 'John'}
guillaume@ubuntu:~/AirBnB$
guillaume@ubuntu:~/AirBnB$ cat file.json ; echo ""
{"BaseModel.af9b4cbd-2ce1-4e6e-8259-f578097dd15f": {"updated_at": "2017-09-28T21:11:12.971544", "__class__": "BaseModel", "id": "af9b4cbd-2ce1-4e6e-8259-f578097dd15f", "created_at": "2017-09-28T21:11:12.971521"}, "User.38f22813-2753-4d42-b37c-57a17f1e4f88": {"password": "63a9f0ea7bb98050796b649e85481845", "created_at": "2017-09-28T21:11:42.848279", "email": "airbnb@mail.com", "id": "38f22813-2753-4d42-b37c-57a17f1e4f88", "last_name": "Bar", "updated_at": "2017-09-28T21:11:42.848291", "first_name": "Betty", "__class__": "User"}, "User.d0ef8146-4664-4de5-8e89-096d667b728e": {"password": "63a9f0ea7bb98050796b649e85481845", "created_at": "2017-09-28T21:11:42.848280", "email": "airbnb_2@mail.com", "id": "d0ef8146-4664-4de5-8e89-096d667b728e", "updated_at": "2017-09-28T21:11:42.848294", "first_name": "John", "__class__": "User"}, "BaseModel.9bf17966-b092-4996-bd33-26a5353cccb4": {"updated_at": "2017-09-28T21:11:14.963058", "__class__": "BaseModel", "id": "9bf17966-b092-4996-bd33-26a5353cccb4", "created_at": "2017-09-28T21:11:14.963049"}, "BaseModel.a42ee380-c959-450e-ad29-c840a898cfce": {"updated_at": "2017-09-28T21:11:15.504296", "__class__": "BaseModel", "id": "a42ee380-c959-450e-ad29-c840a898cfce", "created_at": "2017-09-28T21:11:15.504287"}, "BaseModel.38a22b25-ae9c-4fa9-9f94-59b3eb51bfba": {"updated_at": "2017-09-28T21:11:13.753347", "__class__": "BaseModel", "id": "38a22b25-ae9c-4fa9-9f94-59b3eb51bfba", "created_at": "2017-09-28T21:11:13.753337"}, "BaseModel.2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4": {"updated_at": "2017-09-28T21:11:14.333862", "__class__": "BaseModel", "id": "2bf3ebfd-a220-49ee-9ae6-b01c75f6f6a4", "created_at": "2017-09-28T21:11:14.333852"}, "User.246c227a-d5c1-403d-9bc7-6a47bb9f0f68": {"password": "root", "created_at": "2017-09-28T21:12:19.611352", "email": "airbnb@mail.com", "id": "246c227a-d5c1-403d-9bc7-6a47bb9f0f68", "last_name": "Bar", "updated_at": "2017-09-28T21:12:19.611363", "first_name": "Betty", "__class__": "User"}, "User.fce12f8a-fdb6-439a-afe8-2881754de71c": {"password": "root", "created_at": "2017-09-28T21:12:19.611354", "email": "airbnb_2@mail.com", "id": "fce12f8a-fdb6-439a-afe8-2881754de71c", "updated_at": "2017-09-28T21:12:19.611368", "first_name": "John", "__class__": "User"}}
guillaume@ubuntu:~/AirBnB$

No unittests needed for the console

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

9. More classes

Write all those classes that inherit from BaseModel:

• State (models/state.py):

  • Public class attributes:
    • name: string - empty string

• City (models/city.py):

  • Public class attributes:
    • state_id: string - empty string: it will be the State.id
    • name: string - empty string

• Amenity (models/amenity.py):

  • Public class attributes:
    • name: string - empty string

• Place (models/place.py):

  • Public class attributes:
    • city_id: string - empty string: it will be the City.id
    • user_id: string - empty string: it will be the User.id
    • name: string - empty string
    • description: string - empty string
    • number_rooms: integer - 0
    • number_bathrooms: integer - 0
    • max_guest: integer - 0
    • price_by_night: integer - 0
    • latitude: float - 0.0
    • longitude: float - 0.0
    • amenity_ids: list of string - empty list: it will be the list of Amenity.id later

• Review (models/review.py):

  • Public class attributes:
    • place_id: string - empty string: it will be the Place.id
    • user_id: string - empty string: it will be the User.id
    • text: string - empty string

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

10. Console 1.0

Update FileStorage to manage correctly serialization and deserialization of all our new classes: Place, State, City, Amenity and Review

Update your command interpreter (console.py) to allow those actions: show, create, destroy, update and all with all classes created previously.

Enjoy your first console!

No unittests needed for the console

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

11. All instances by class name

Update your command interpreter (console.py) to retrieve all instances of a class by using: <class name>.all().

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) User.all()
[[User] (246c227a-d5c1-403d-9bc7-6a47bb9f0f68) {'first_name': 'Betty', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611352), 'updated_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611363), 'password': '63a9f0ea7bb98050796b649e85481845', 'email': 'airbnb@mail.com', 'id': '246c227a-d5c1-403d-9bc7-6a47bb9f0f68'}, [User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'first_name': 'Betty', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848291), 'password': 'b9be11166d72e9e3ae7fd407165e4bd2', 'email': 'airbnb@mail.com', 'id': '38f22813-2753-4d42-b37c-57a17f1e4f88'}]
(hbnb)

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

12. Count instances

Update your command interpreter (console.py) to retrieve the number of instances of a class: <class name>.count().

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) User.count()
2
(hbnb)

No unittests needed

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

13. Show

Update your command interpreter (console.py) to retrieve an instance based on its ID: <class name>.show(<id>).

Errors management must be the same as previously.

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) User.show("246c227a-d5c1-403d-9bc7-6a47bb9f0f68")
[User] (246c227a-d5c1-403d-9bc7-6a47bb9f0f68) {'first_name': 'Betty', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611352), 'updated_at': datetime.datetime(2017, 9, 28, 21, 12, 19, 611363), 'password': '63a9f0ea7bb98050796b649e85481845', 'email': 'airbnb@mail.com', 'id': '246c227a-d5c1-403d-9bc7-6a47bb9f0f68'}
(hbnb) User.show("Bar")
** no instance found **
(hbnb)

No unittests needed

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

14. Destroy

Update your command interpreter (console.py) to destroy an instance based on his ID: <class name>.destroy(<id>).

Errors management must be the same as previously.

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) User.count()
2
(hbnb) User.destroy("246c227a-d5c1-403d-9bc7-6a47bb9f0f68")
(hbnb) User.count()
1
(hbnb) User.destroy("Bar")
** no instance found **
(hbnb)

No unittests needed

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

15. Update

Update your command interpreter (console.py) to update an instance based on his ID: <class name>.update(<id>, <attribute name>, <attribute value>).

Errors management must be the same as previously.

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) User.show("38f22813-2753-4d42-b37c-57a17f1e4f88")
[User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'first_name': 'Betty', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'updated_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848291), 'password': 'b9be11166d72e9e3ae7fd407165e4bd2', 'email': 'airbnb@mail.com', 'id': '38f22813-2753-4d42-b37c-57a17f1e4f88'}
(hbnb)
(hbnb) User.update("38f22813-2753-4d42-b37c-57a17f1e4f88", "first_name", "John")
(hbnb) User.update("38f22813-2753-4d42-b37c-57a17f1e4f88", "age", 89)
(hbnb)
(hbnb) User.show("38f22813-2753-4d42-b37c-57a17f1e4f88")
[User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'age': 89, 'first_name': 'John', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'updated_at': datetime.datetime(2017, 9, 28, 21, 15, 32, 299055), 'password': 'b9be11166d72e9e3ae7fd407165e4bd2', 'email': 'airbnb@mail.com', 'id': '38f22813-2753-4d42-b37c-57a17f1e4f88'}
(hbnb)

No unittests needed

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

16. Update from dictionary

Update your command interpreter (console.py) to update an instance based on his ID with a dictionary: <class name>.update(<id>, <dictionary representation>).

Errors management must be the same as previously.

guillaume@ubuntu:~/AirBnB$ ./console.py
(hbnb) User.show("38f22813-2753-4d42-b37c-57a17f1e4f88")
[User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'age': 23, 'first_name': 'Bob', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'updated_at': datetime.datetime(2017, 9, 28, 21, 15, 32, 299055), 'password': 'b9be11166d72e9e3ae7fd407165e4bd2', 'email': 'airbnb@mail.com', 'id': '38f22813-2753-4d42-b37c-57a17f1e4f88'}
(hbnb)
(hbnb) User.update("38f22813-2753-4d42-b37c-57a17f1e4f88", {'first_name': "John", "age": 89})
(hbnb)
(hbnb) User.show("38f22813-2753-4d42-b37c-57a17f1e4f88")
[User] (38f22813-2753-4d42-b37c-57a17f1e4f88) {'age': 89, 'first_name': 'John', 'last_name': 'Bar', 'created_at': datetime.datetime(2017, 9, 28, 21, 11, 42, 848279), 'updated_at': datetime.datetime(2017, 9, 28, 21, 17, 10, 788143), 'password': 'b9be11166d72e9e3ae7fd407165e4bd2', 'email': 'airbnb@mail.com', 'id': '38f22813-2753-4d42-b37c-57a17f1e4f88'}
(hbnb)

No unittests needed

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

17. Unittests for the Console

Write all unittests for console.py, all features!

For testing the console, you should “intercept” STDOUT of it, we highly recommend you to use:

with patch('sys.stdout', new=StringIO()) as f:
    HBNBCommand().onecmd("help show")

Otherwise, you will have to re-write the console by replacing precmd by default.

Repo:

• GitHub repository: AirBnB_clone
• File: console.py

Authors :black_nib

• Daniel Kariuki <Kariuki33>