The command interpreter will be used in subsequent AirBnb projects to manage objects of our classes. This console will allow us to do the following:
- Create new objects
- Retrieve an object
- Do operations on an object
- Change and update object attributes
- Destroy an object
The console can be run in interactive and non-interactive mode.
To run a command in non-interactive mode, echo the desired command and pipe it into the console like so:
echo "<command>" | ./console.py
echo "create BaseModel" | ./console.py
echo "all" | ./console.py
echo "show BaseModel 1123-2312312-241214-213134" | ./console.py
To run in interactive mode:
./console.py
Then type the desired commands inside of the program.
(hbnb) create BaseModel
(hbhb) all
(hbnhb) show BaseModel 1123-2312312-241214-213134"
| Command | Description |
|---|---|
quit |
Exit the program |
EOF |
Exit the program |
create <class> |
Create an instance of a class |
show <class> <id> |
Print the string representation of an instance of a class |
destroy <class> <id> |
Delete instance of a class |
update <class> <id> <attribute name> "<attribute value>" |
Update an attribute of an instance |
all |
Print all string representations of all instances |
all <class> |
Print all string representations of all instances of a class |
<class>.all() |
See all |
<class>.count() |
Return number of instances of a class |
<class>.show(<id>) |
See show |
<class>.destroy(<id>) |
See destroy |
<class>.update(<id>, <attribute name>, <attribute value>) |
See update |
(hbnb) create User
8cf6930e-da38-4ecb-887a-841d7de188cb
(hbnb) show User 8cf6930e-da38-4ecb-887a-841d7de188cb
[BaseModel] (8cf6930e-da38-4ecb-887a-841d7de188cb) {'id': '8cf6930e-da38-4ecb-887a-841d7de188cb', 'updated_at': datetime.datetime(2019, 7, 3, 22, 37, 53, 44113), 'created_at': datetime.datetime(2019, 7, 3, 22, 37, 53, 44069)}
(hbnb) User.count()
1
| File Name | Description |
|---|---|
console.py |
Program for running the HBNB console |
models/basemodel.py |
Defines the BaseModel class |
models/engine/file_storage.py |
Defines the FileStorage class, handles the database |
models/user.py |
Defines the User class, subclass of BaseModel |
models/city.py |
Defines the City class, subclass of BaseModel |
models/state.py |
Defines the User class, subclass of BaseModel |
models/amenity.py |
Defines the Amenity class, subclass of BaseModel |
models/review.py |
Defines the Review class, subclass of BaseModel |
models/place.py |
defines the place class, subclass of basemodel |
tests/ |
the test directory contains all unittest files for each class, separated by class name |