HBnb the Console!
In the first part of the AirBnB clone project, we have implemented the console we use for data management (creating, saving, loading and updating objects) in a JSON file using serialization/deserialization.
The console is an command line interpreter that works both interactively and non-interactively mode.
Is used to manage objects:
- 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
To use the console in interactive mode:
$ ./console.py
(hbnb)
or to use the non-interactive mode:
$ echo "command" | ./console.py
all- Prints all string representation of all instances based or not on the class name.
all [Class]
Class.all()
Class.count()
(hbnb) all
[City] (deb614d7-7c8b-4bfa-b214-24b1673e7ac3) {'id': 'deb614d7-7c8b-4bfa-b214-24b1673e7ac3', 'updated_at': datetime.datetime(2020, 7, 2, 10, 32, 31, 893392), 'created_at': datetime.datetime(2020, 7, 2, 10, 32, 31, 893345)}
(hbnb) City.all()
[City] (deb614d7-7c8b-4bfa-b214-24b1673e7ac3) {'id': 'deb614d7-7c8b-4bfa-b214-24b1673e7ac3', 'updated_at': datetime.datetime(2020, 7, 2, 10, 32, 31, 893392), 'created_at': datetime.datetime(2020, 7, 2, 10, 32, 31, 893345)}
((hbnb) City.count()
1
(hbnb))
create- Creates a new instance of BaseModel, saves it (to the JSON file) and prints the id.
create <Class>
(hbnb) create Place
8c108520-00c3-4033-bdcf-cf3c18b95022
(hbnb)
count- Prints the number of instances of the given Class.
<Class>.count()
(hbnb) Amenity.count()
1
(hbnb)
destroy- Deletes an instance based on the class name and id.
destroy <Class> <id>
<Class>.destroy(<id>)
(hbnb) destroy City deb614d7-7c8b-4bfa-b214-24b1673e7ac3
(hbnb) Place.destroy(8c108520-00c3-4033-bdcf-cf3c18b95022)
EOF- Quit the console with an End of File (ctrl + D).
EOF
help- List available commands with "help" or detailed help with.
help [cmd]
(hbnb) help
Documented commands (type help <topic>):
========================================
EOF all create destroy help list quit show update
((hbnb) help create
Create a new instance of a Airbnb Class.
Usage: create <Class>
(hbnb)
list- List available Classes.
list
(hbnb) list
Place City State Review User BaseModel Amenity
(hbnb)
quit- Quit command to exit the program.
quit
show- Print the string representation of an instance based on the class name an id.
show <Class> <id>
Class.show(<id>)
(hbnb) show Amenity c618bbed-6930-48c7-ae24-8124b518467c
[Amenity] (c618bbed-6930-48c7-ae24-8124b518467c) {'updated_at': datetime.datetime(2020, 7, 9, 13, 37, 40, 471585), 'created_at': datetime.datetime(2020, 7, 9, 13, 37, 40, 471529), 'id': 'c618bbed-6930-48c7-ae24-8124b518467c'}
(hbnb) Amenity.show (c618bbed-6930-48c7-ae24-8124b518467c)
[Amenity] (c618bbed-6930-48c7-ae24-8124b518467c) {'updated_at': datetime.datetime(2020, 7, 9, 13, 37, 40, 471585), 'created_at': datetime.datetime(2020, 7, 9, 13, 37, 40, 471529), 'id': 'c618bbed-6930-48c7-ae24-8124b518467c'}
(hbnb)
update- Updates an instance based on the class name and id by adding or updating attribute
update <Class> <id> <attribute name> "<attribute value>"
<Class>.update(<id>, <attribute name>, <attribute value>)
<Class>.update(<id>, <dictionary representation>)
(hbnb) update City 18a264ff-3dd1-4866-a25d-c1abd1894ebd name: Joe
(hbnb) City.update(18a264ff-3dd1-4866-a25d-c1abd1894ebd, name, Jhon)