/AirBnB_clone

For Alx project AirBnB_clone

Primary LanguagePython

0x00. AirBnB clone - The console

HolbertonBnB logo

HolbertonBnB

An AirBnB clone.

HolbertonBnB logo

Project Description:

This is the first part of the AirBnB clone project where we worked on the backend of the project whiles interfacing it with a console application with the help of the cmd module in python by use (python).

Data (python objects) generated are stored in a json file and can be accessed using json module in python

Description of the command interpreter:

This command line interpreter serves as the frontend of the web app where users can interact with the backend which was developed with python OOP programming.

As part of the implementation of the command line interpreter, the folowing actions can be performed:

  • Creating new objects (ex: a new User or a new Place)
  • Retrieving an object from a file, a database etc…
  • Doing operations on objects (count, compute stats, etc…)
  • Updating attributes of an object
  • Destroying an object

How to start it:

  1. Clone the repository of the project from Github. This will contain the simple shell program and all of its dependencies.

(https://github.com/Marwanfouz/AirBnB_clone.git)
  1. After cloning the repository, there is a folder called AirBnB_clone with several files necessary for program to work.

./console.py : The main executable of the project, the command interpreter.

models/engine/file_storage.py: Class that serializes instances to a JSON file and deserializes JSON file to instances

models/__ init __.py: A unique FileStorage instance for the application

models/base_model.py: Class that defines all common attributes/methods for other classes.

models/user.py: User class that inherits from BaseModel

How to use it:

It can work in two different modes:

Interactive and Non-interactive.

In Interactive mode, the console will display a prompt (hbnb) indicating that the user can interact with the prompt.

$ ./console.py
(hbnb) help

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

(hbnb) 
(hbnb) 
(hbnb) quit
$

In Non-interactive mode ((like the Shell project in C)), the shell will need to be run with a command input piped into its execution so that the command is run as soon as the Shell starts. In this mode no prompt will appear, and no further input will be expected from the user.

$ 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) 
$

examples:

  • 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)
  • 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 📏

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

Authors ✒️

  • Ahmed khaled
  • Marwan Fouz