AirBnB_clone - The console

Holbertone project clone AirBnB web app

Description

Command interpreter to manage 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

How to start the interpreter

In the command line run:

$ ./console.py

Class name available

BaseModel, User, State, City, Amenity, Place, Review

Commands usage:

Command	Syntax	Description
EOF	EOF	Exit command interpreter
quit	quit	Exit command interpreter
help	help [option]	Lists all available commands, or displays what option does
create	create [class_name] or [class_name].create()	Creates an instance of class_name
update	update [class_name] [object_id] [update_key] [update_value] or [class].update([object_id] [update_key] [update_value] ()	Updates the key:value of class_name.object_id instance
show	show [class_name] [object_id] or [class_name].show([object_id])()	Displays all attributes of class_name.object_id
all	all [class_name], [class_name].all()	Displays every instance of class_name, if used without option displays every instance saved to the file
destroy	destroy [class_name] [object_id] or [class_name].destroy([object_id])()	Deletes all attributes of class_name.object_id
count	count [class_name] or [class_name].count()	Counts all the instances with class name specified

Example Usage

hbnb) help

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

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

(hbnb) 
(hbnb)
(hbnb) all MyModel
** class doesn't exist **
(hbnb) show BaseModel
** instance id missing **
(hbnb) show BaseModel Holberton
** 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) User.show("246c227a-d5c1-403d-9bc7-6a47bb9f0f68")
[User] (246c227a-d5c1-403d-9bc7-6a47bb9f0f68) {'first_name': 'Betty', 'last_name': 'Holberton', '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@holbertonshool.com', 'id': '246c227a-d5c1-403d-9bc7-6a47bb9f0f68'}
(hbnb) User.show("Holberton")
** no instance found **
(hbnb) User.count()
2
(hbnb) User.destroy("246c227a-d5c1-403d-9bc7-6a47bb9f0f68")
(hbnb) User.count()
1
(hbnb) quit

Fermec28/AirBnB_clone