Part: 0x00 - the console
This is the first part of the AirBnB Clones project series.
This is a clone of the AirBnB website. This specific part partly covers these concepts:
console(command interpreter), Python Object Oriented Programming(OOP), file storage etc.
Specifications:
- create data model - Python Object Orientation.
- manage (create, update, destroy, etc) objects via a console / command interpreter
- store and persist objects to a file (JSON file)The first piece is to manipulate a storage system. This storage engine will give us an abstraction between model objects and storage(persisting to storage). This means: from the console code (the developed command interpreter itself) and from the front-end and RESTful API (built later on in subsequent series).
This abstraction will also allow you to change the type of storage easily without updating all of your codebase eg using a storage db.
The console will be a tool to validate the storage engine...
This section is all file info.
.
├── AUTHORS - Docker specified formatted file for contributors
├── README.md - project documentation.
├── console.py - single-use command interpreter(uses Python `cmd` module).
├── models/ - the main driver of the project; lays out Python Object Orientation, initialization, serialization, (de)serialization etc.
│ ├── __init__.py - effectively make a `Python` Package out of these modules, unique FileStorage instance for app
│ ├── base_model.py - includes base (class) model ; for subclassing/inheritance - is the superclass.
│ ├── user.py - sample file with subclass of BaseModel(from module base_model)
│ ├── engine/ - abstracted storage engine/system for persisting data.
│ │ ├── __init__.py - effectively make a `Python` Package out of these modules
│ │ └── file_storage.py - module with methodes meant to interact with file storage(read from/write to JSON file), and models
└── tests/ - directory for unit testing, test cases/test suites etc.
├── __init__.py - effectively make a `Python` Package out of these modules, for Python test discovery.
└── test_models/ - files that test models eg test_base_model.py, test_user.py, test_review.py
└── __init__.py - effectively make a `Python` Package out of these modules, for Python test discovery.
css,htmlonly:this is a mock
frontendfor the AirBnB clone; with fake (static) data at this stage.
command-line interface
a shell implementation that uses thePythonmodulecmd, which provides a simple framework for writing line-oriented command interpreters.
- Supposed theoretical behavior in interactive mode:
$ ./console.py
(hbnb) help
Documented commands (type help <topic>):
========================================
EOF help quit
(hbnb)
(hbnb)
(hbnb) quit
$- Supposed theoretical behavior in non-interactive mode:
$ 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)
$Is a CRUD simulated behavior - operations on objects in command-line.
Note:
start interpreter in interactive mode:./console.py;- quit interpreter: typequitorEOF, or pressCtrl + D
sample interpreter features:create,show,update,destroy, etc
create a new object:
$ create ClassName, for example to create a base instance do$ create BaseModel
display objects from storage:$ all
destroy/delete objects from storage:$ destroy ClassName valid-id
use thehelpmenu as a manual/reference:$ help destroy
see the shell session below for reference on how to use the command interpreter/console:
root@HP:/alx-SE/AirBnB_clone# ./console.py
(hbnb) show User e57df8d1-1910-491d-b1ed-0166c102a3d9
[User] (e57df8d1-1910-491d-b1ed-0166c102a3d9) {'id': 'e57df8d1-1910-491d-b1ed-0166c102a3d9', 'created_at': datetime.datetime(2023, 5, 13, 10, 34, 49, 790134), 'updated_at': datetime.datetime(2023, 5, 13, 10, 34, 49, 790148), 'first_name': 'John', 'email': '[email protected]', 'password': 'root'}
(hbnb) show Use e57df8d1-1910-491d-b1ed-0166c102a3d9
** class doesn't exist **
(hbnb) all
["[BaseModel] (48b65c1f-9106-4113-8d37-cc7ab2d90ba6) {'id': '48b65c1f-9106-4113-8d37-cc7ab2d90ba6', 'created_at': datetime.datetime(2023, 5, 12, 14, 9, 49, 502137), 'updated_at': datetime.datetime(2023, 5, 12, 14, 9, 49, 502161), 'name': 'My_First_Model', 'my_number': 89}", "[BaseModel] (2d4dd2fd-6266-4c1b-8a65-727b641d83e3) {'id': '2d4dd2fd-6266-4c1b-8a65-727b641d83e3', 'created_at': datetime.datetime(2023, 5, 12, 14, 10, 7, 226227), 'updated_at': datetime.datetime(2023, 5, 12, 14, 10, 7, 226261), 'name': 'My_First_Model', 'my_number': 89}", "[BaseModel] (33595b8b-8ee1-43d5-ab35-c777565628b4) {'id': '33595b8b-8ee1-43d5-ab35-c777565628b4', 'created_at': datetime.datetime(2023, 5, 12, 14, 10, 22, 464350), 'updated_at': datetime.datetime(2023, 5, 12, 14, 10, 22, 464414), 'name': 'My_First_Model', 'my_number': 89}", "[BaseModel] (b9c7dd00-15d9-4069-964f-05de4a22bc32) {'id': 'b9c7dd00-15d9-4069-964f-05de4a22bc32', 'created_at': datetime.datetime(2023, 5, 12, 20, 24, 40, 392247), 'updated_at': datetime.datetime(2023, 5, 12, 20, 24, 40, 392346)}", "[User] (458405dd-1c31-486e-a306-bc232443dfaf) {'id': '458405dd-1c31-486e-a306-bc232443dfaf', 'created_at': datetime.datetime(2023, 5, 13, 10, 34, 49, 789439), 'updated_at': datetime.datetime(2023, 5, 13, 10, 34, 49, 789513), 'first_name': 'Betty', 'last_name': 'Bar', 'email': '[email protected]', 'password': 'root'}", "[User] (e57df8d1-1910-491d-b1ed-0166c102a3d9) {'id': 'e57df8d1-1910-491d-b1ed-0166c102a3d9', 'created_at': datetime.datetime(2023, 5, 13, 10, 34, 49, 790134), 'updated_at': datetime.datetime(2023, 5, 13, 10, 34, 49, 790148), 'first_name': 'John', 'email': '[email protected]', 'password': 'root'}"]
(hbnb) stuff BaseModel
*** Unknown syntax: stuff BaseModel
(hbnb) help update
update
updates an instance based on the class name and id
by adding or updating attribute (save the change into the JSON file).
usage: update <class name> <id> <attribute name> "<attribute value>"
(hbnb)
(hbnb) create BaseModel
2956e421-eecf-4ac7-bf49-7f493646738f
(hbnb) EOF
root@HP:/alx-SE/AirBnB_clone#uses the
unittestmodule for testing.
pathto test files/for test coverage - directory:tests/test_models
Running tests using Python test discovery...
# execute tests using this command for all tests(pwd == AirBnB root dir):
$ python3 -m unittest discover tests
# test file by file by using this command:
$ python3 -m unittest tests/test_models/test_base_model.pyYou can find a list of contributors/project developers in the authors file.
If you like this project, take us out for coffee :)
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