README.md

Django API Documentation - User CRUD 📚

Overview 🔍

This API allows managing users with CRUD operations (Create, Read, Update, Delete) to handle user data stored in the database. The user data includes a nickname (user_nickname), full name (user_name), email (user_email), and age (user_age). 👤

---

Models 🏷️

User 👤

The User model is used to represent a user in the system.

class User(models.Model):
    user_nickname = models.CharField(primary_key=True, max_length=100, default="")
    user_name = models.CharField(max_length=150, default="")
    user_email = models.EmailField(default='')
    user_age = models.IntegerField(default=0)
    
    def __str__(self):
        return f'Nickname: {self.user_nickname} | E-mail: {self.user_email}'

• user_nickname: A unique identifier for the user (Primary Key).
• user_name: The full name of the user.
• user_email: The email address of the user.
• user_age: The age of the user.

---

Views 🖥️

1. get_users - Get All Users

Returns a list of all users in the database.

HTTP Method: GET 📡

• URL: /users/
• Success Response:
  • Status Code: 200 OK ✅
  • Body: List of users with user_nickname, user_name, user_email, user_age.

Example Response:

[
    {
        "user_nickname": "john_doe",
        "user_name": "John Doe",
        "user_email": "[email protected]",
        "user_age": 28
    },
    {
        "user_nickname": "jane_doe",
        "user_name": "Jane Doe",
        "user_email": "[email protected]",
        "user_age": 25
    }
]

---

2. get_by_nick - Get or Update User by Nickname

Allows getting or updating a specific user by their nickname.

HTTP Methods: GET, PUT

• URL: /users/<nick>/

  • GET:

    • Retrieves the details of a user based on the user_nickname specified.
    • Success Response: 200 OK ✅ with user data.

  • PUT:

    • Updates the information of a user based on the user_nickname specified.
    • Success Response: 202 Accepted ✅ with the updated data.

Example Response GET:

{
    "user_nickname": "john_doe",
    "user_name": "John Doe",
    "user_email": "[email protected]",
    "user_age": 28
}

---

3. user_manager - Manage User

Allows creating, retrieving, updating, and deleting a specific user based on the nickname. Depending on the HTTP method, the operation will differ.

HTTP Methods: GET, POST, PUT, DELETE

• URL: /user_manager/

  • GET:

    • Retrieves user data based on the user_nickname passed via query parameters.
    • Example URL: /user_manager/?user=john_doe
    • Success Response: 200 OK ✅ with the user data.

  • POST:

    • Creates a new user with the provided data in the request body.
    • Success Response: 201 Created ✅ with the new user data.

  • PUT:

    • Updates the user data for the specified user_nickname.
    • Success Response: 202 Accepted ✅ with the updated user data.

  • DELETE:

    • Deletes the user based on the user_nickname provided in the request body.
    • Success Response: 202 Accepted ✅, indicating the user was deleted.

Example Response POST:

{
    "user_nickname": "jane_doe",
    "user_name": "Jane Doe",
    "user_email": "[email protected]",
    "user_age": 25
}

Example Response DELETE:

• Status Code: 202 Accepted ✅

---

Serializers ⚙️

UserSerializer

The UserSerializer is responsible for converting User model instances to JSON format to be returned by the API and validating the data received for creation or updating operations.

from rest_framework import serializers
from .models import User

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ['user_nickname', 'user_name', 'user_email', 'user_age']

---

URLs 🌐

API URLs

• GET all users: /users/
• GET or PUT user by nickname: /users/<nick>/
• User management: /user_manager/

---

Request Examples 📬

GET All Users:

GET /users/

GET User by Nickname:

GET /users/john_doe/

POST Create New User:

POST /user_manager/
Content-Type: application/json
{
    "user_nickname": "new_user",
    "user_name": "New User",
    "user_email": "[email protected]",
    "user_age": 30
}

PUT Update User:

PUT /users/john_doe/
Content-Type: application/json
{
    "user_name": "John Doe Updated",
    "user_email": "[email protected]",
    "user_age": 29
}

DELETE Delete User:

DELETE /user_manager/
Content-Type: application/json
{
    "user_nickname": "john_doe"
}