The console is the first segment of the AirBnB project at ALX School that will collectively cover fundamental concepts of higher level programming. The goal of AirBnB project is to eventually deploy our server a simple copy of the AirBnB Website(HBnB). A command interpreter is created in this segment to manage objects for the AirBnB(HBnB) website.
The above classes are handled by the abstracted storage engine defined in the FileStorage class.
Every time the backend is initialized, AirBnB_clone instantiates an instance of
FileStorage
called storage
. The storage
object is loaded/re-loaded from
any class instances stored in the JSON file file.json
. As class instances are
created, updated, or deleted, the storage
object is used to register
corresponding changes in the file.json
.
The console is a command line interpreter that permits management of the backend
of HolbertonBnB. It can be used to handle and manipulate all classes utilized by
the application (achieved by calls on the storage
object defined above).
The AirBnB_clone console can be run both interactively and non-interactively.
To run the console in non-interactive mode, pipe any command(s) into an execution
of the file console.py
at the command line.
#### Functionalities of this command interpreter:
* 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
## Table of Content
* [Environment](#environment)
* [Installation](#installation)
* [File Descriptions](#file-descriptions)
* [Usage](#usage)
* [Examples of use](#examples-of-use)
* [Bugs](#bugs)
* [Authors](#authors)
* [License](#license)
## Environment
This project is interpreted/tested on Ubuntu 20.04 LTS using python3 (version 3.8.5)
## Installation
* Clone this repository: `git clone "https://github.com/Anteneh2121/AirBnB_clone.git"`
* Access AirBnb directory: `cd AirBnB_clone`
* Run hbnb(interactively): `./console` and enter command
* Run hbnb(non-interactively): `echo "<command>" | ./console.py`
## File Descriptions
[console.py](console.py) - the console contains the entry point of the command interpreter.
List of commands this console current supports:
* `EOF` - exits console
* `quit` - exits console
* `<emptyline>` - overwrites default emptyline method and does nothing
* `create` - Creates a new instance of`BaseModel`, saves it (to the JSON file) and prints the id
* `destroy` - Deletes an instance based on the class name and id (save the change into the JSON file).
* `show` - Prints the string representation of an instance based on the class name and id.
* `all` - Prints all string representation of all instances based or not on the class name.
* `update` - Updates an instance based on the class name and id by adding or updating attribute (save the change into the JSON file).
$ echo "help" | ./console.py
(hbnb)
Documented commands (type help <topic>):
========================================
EOF all count create destroy help quit show update
(hbnb)
$
Alternatively, to use the AirBnB_clone console in interactive mode, run the
file console.py
by itself:
$ ./console.py
While running in interactive mode, the console displays a prompt for input:
$ ./console.py
(hbnb)
To quit the console, enter the command quit
, or input an EOF signal
(ctrl-D
).
$ ./console.py
(hbnb) quit
$
$ ./console.py
(hbnb) EOF
$
The AirBnB console supports the following commands:
- create
- Usage:
create <class>
- Usage:
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>)
- Usage:
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>)
- Usage:
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
orall <class>
or<class>.all()
- Usage:
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)
- count
- Usage:
count <class>
or<class>.count()
- Usage:
Retrieves the number of instances of a given class.
$ ./console.py
(hbnb) create Place
12c73223-f3d3-4dec-9629-bd19c8fadd8a
(hbnb) create Place
aa229cbb-5b19-4c32-8562-f90a3437d301
(hbnb) create City
22a51611-17bd-4d8f-ba1b-3bf07d327208
(hbnb)
(hbnb) count Place
2
(hbnb) city.count()
1
(hbnb)
- update
- Usage:
update <class> <id> <attribute name> "<attribute value>"
or<class>.update(<id>, <attribute name>, <attribute value>)
or<class>.update( <id>, <attribute dictionary>)
.
- Usage:
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)
Unittests for the AirBnB_clone 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
No known bugs at this time.