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🧩 3-DARS: CRUD OPERATSIYALARINI AMALGA OSHIRISH

🎯 Dars Maqsadi

Bu darsda CRUD (Create, Read, Update, Delete) operatsiyalarini to'liq o'rganasiz. Telefon Kitobchasi (Contact Book) loyihasini yaratish orqali har bir CRUD operatsiyasini amaliyotda ko'rasiz.

Dars oxirida siz:

✅ CREATE - Yangi kontakt qo'shishni bilasiz
✅ READ - Kontaktlarni ko'rishni o'rganasiz (hamma va bitta)
✅ UPDATE - Kontakt ma'lumotlarini yangilashni bilasiz
✅ DELETE - Kontaktni o'chirishni o'rganasiz
✅ Validation va Error handling qilishni bilasiz
✅ PATCH vs PUT farqini tushunasiz

💡 Nima Uchun Contact Book?

Telefon kitobchasi - eng oddiy va tushunarli misol:

📱 Har kim biladi telefon kitobchasi qanday ishlashini
✅ CRUD operatsiyalari aniq ko'rinadi
🔍 Qidirish va filtrlash oson
📊 Real-world example

🚀 1. YANGI LOYIHA YARATISH

1.1 Loyiha va Ilova Yaratish

Yangi papka yarating va virtual environment ishga tushiring:

# Yangi papka yaratish
mkdir contact_book_api
cd contact_book_api

# Virtual environment
python -m venv env

# Activate (Windows)
env\Scripts\activate

# Django va DRF o'rnatish
pip install django djangorestframework

Django loyihasi yaratish:

# Loyiha yaratish
django-admin startproject contact_project .

# Ilova yaratish
python manage.py startapp contacts

1.2 Settings.py Sozlash

contact_project/settings.py faylini oching:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    
    # Third-party apps
    'rest_framework',  # DRF ni qo'shamiz
    
    # Local apps
    'contacts',  # Bizning ilova
]

# DRF sozlamalari (ixtiyoriy)
REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 10  # Bir sahifada 10 ta kontakt
}

💾 2. MODEL YARATISH

2.1 Contact Modeli

contacts/models.py faylida:

from django.db import models

class Contact(models.Model):
    """
    Telefon kitobchasidagi kontakt modeli
    Bu model har bir kontaktning ma'lumotlarini saqlaydi
    """
    
    # Kontaktning ismi (majburiy)
    # CharField - qisqa matn uchun ishlatiladi
    # max_length=100 - maksimal 100 ta belgi
    first_name = models.CharField(
        max_length=100,
        verbose_name="Ism",
        help_text="Kontaktning ismi"
    )
    
    # Kontaktning familiyasi (majburiy)
    last_name = models.CharField(
        max_length=100,
        verbose_name="Familiya",
        help_text="Kontaktning familiyasi"
    )
    
    # Telefon raqami (majburiy va unique - takrorlanmasligi kerak)
    # unique=True - bir xil telefon raqam 2 marta bo'lmasligi kerak
    phone_number = models.CharField(
        max_length=20,
        unique=True,
        verbose_name="Telefon raqami",
        help_text="+998901234567 formatida"
    )
    
    # Elektron pochta (ixtiyoriy)
    # blank=True - forma to'ldirilganda majburiy emas
    # null=True - database da NULL qiymat bo'lishi mumkin
    email = models.EmailField(
        blank=True,
        null=True,
        verbose_name="Email",
        help_text="Elektron pochta manzili"
    )
    
    # Manzil (ixtiyoriy)
    # TextField - uzun matn uchun ishlatiladi
    address = models.TextField(
        blank=True,
        null=True,
        verbose_name="Manzil",
        help_text="To'liq manzil"
    )
    
    # Tug'ilgan kun (ixtiyoriy)
    # DateField - faqat sana (vaqtsiz)
    date_of_birth = models.DateField(
        blank=True,
        null=True,
        verbose_name="Tug'ilgan kun"
    )
    
    # Sevimli kontaktmi? (checkbox)
    # BooleanField - True/False qiymat
    # default=False - standart qiymati False (sevimli emas)
    is_favorite = models.BooleanField(
        default=False,
        verbose_name="Sevimli",
        help_text="Sevimli kontaktlar ro'yxatiga qo'shish"
    )
    
    # Yaratilgan vaqt (avtomatik)
    # auto_now_add=True - faqat birinchi marta yaratilganda vaqt qo'yiladi
    created_at = models.DateTimeField(
        auto_now_add=True,
        verbose_name="Yaratilgan vaqt"
    )
    
    # Yangilangan vaqt (avtomatik)
    # auto_now=True - har safar yangilanganda vaqt yangilanadi
    updated_at = models.DateTimeField(
        auto_now=True,
        verbose_name="Yangilangan vaqt"
    )
    
    class Meta:
        # Admin panelda ko'rinish nomlari
        verbose_name = "Kontakt"
        verbose_name_plural = "Kontaktlar"
        
        # Standart tartiblash - ismga qarab A-Z
        ordering = ['first_name', 'last_name']
        
        # Database indekslari - qidirishni tezlashtirish uchun
        indexes = [
            models.Index(fields=['phone_number']),
            models.Index(fields=['email']),
        ]
    
    def __str__(self):
        """
        Admin panelda va shell da obyekt nomini ko'rsatish
        Masalan: "Alisher Navoiy"
        """
        return f"{self.first_name} {self.last_name}"
    
    def get_full_name(self):
        """
        To'liq ismni olish uchun custom metod
        """
        return f"{self.first_name} {self.last_name}"
    
    def get_age(self):
        """
        Yoshni hisoblash (agar tug'ilgan kun kiritilgan bo'lsa)
        """
        if self.date_of_birth:
            from datetime import date
            today = date.today()
            age = today.year - self.date_of_birth.year
            # Tug'ilgan kun hali bo'lmagan bo'lsa, 1 yil kamaytiramiz
            if today.month < self.date_of_birth.month or \
               (today.month == self.date_of_birth.month and today.day < self.date_of_birth.day):
                age -= 1
            return age
        return None

2.2 Migratsiya Qilish

# Migratsiya fayllarini yaratish
python manage.py makemigrations

# Natija:
# Migrations for 'contacts':
#   contacts/migrations/0001_initial.py
#     - Create model Contact

# Database ga tatbiq qilish
python manage.py migrate

🔧 3. SERIALIZER YARATISH

3.1 Serializer Nima?

Serializer - ma'lumotlarni JSON formatga va qaytadan Python obyektga aylantiruvchi vosita.

Contact Model (Python) → Serializer → JSON (frontend uchun)
JSON (frontend dan) → Serializer → Contact Model (Python)

3.2 ContactSerializer

contacts/serializers.py faylini yarating:

from rest_framework import serializers
from .models import Contact

class ContactSerializer(serializers.ModelSerializer):
    """
    Contact modelini JSON formatga aylantirish uchun serializer
    """
    
    # Read-only field - faqat response da ko'rinadi, create/update da yo'q
    full_name = serializers.SerializerMethodField()
    age = serializers.SerializerMethodField()
    
    class Meta:
        model = Contact  # Qaysi model ishlatiladi
        
        # JSON da qaysi fieldlar ko'rinadi
        fields = [
            'id',              # Avtomatik yaratilgan ID
            'first_name',      # Ism
            'last_name',       # Familiya
            'full_name',       # To'liq ism (custom field)
            'phone_number',    # Telefon
            'email',           # Email
            'address',         # Manzil
            'date_of_birth',   # Tug'ilgan kun
            'age',             # Yosh (custom field)
            'is_favorite',     # Sevimli
            'created_at',      # Yaratilgan vaqt
            'updated_at',      # Yangilangan vaqt
        ]
        
        # Faqat o'qish uchun fieldlar (POST/PUT da o'zgartirib bo'lmaydi)
        read_only_fields = ['id', 'created_at', 'updated_at']
    
    def get_full_name(self, obj):
        """
        To'liq ismni qaytarish
        obj - Contact obyekti
        """
        return obj.get_full_name()
    
    def get_age(self, obj):
        """
        Yoshni qaytarish
        """
        return obj.get_age()
    
    # VALIDATION - Ma'lumotlarni tekshirish
    
    def validate_phone_number(self, value):
        """
        Telefon raqamini tekshirish
        value - foydalanuvchi yuborgan telefon raqam
        """
        # Bo'sh joylarni olib tashlash
        value = value.strip()
        
        # Kamida 9 ta raqam bo'lishi kerak
        if len(value) < 9:
            raise serializers.ValidationError(
                "Telefon raqam kamida 9 ta raqamdan iborat bo'lishi kerak!"
            )
        
        # Faqat raqam, +, -, (, ) bo'lishi mumkin
        allowed_chars = set('0123456789+-() ')
        if not all(char in allowed_chars for char in value):
            raise serializers.ValidationError(
                "Telefon raqamda faqat raqamlar va +, -, (, ) belgilari bo'lishi mumkin!"
            )
        
        return value
    
    def validate_email(self, value):
        """
        Email validatsiyasi
        EmailField avtomatik tekshiradi, lekin qo'shimcha tekshirishlar qo'shamiz
        """
        if value:  # Agar email berilgan bo'lsa
            # Kichik harflarga aylantirish
            value = value.lower().strip()
        return value
    
    def validate_first_name(self, value):
        """
        Ism validatsiyasi
        """
        # Bo'sh joylarni olib tashlash
        value = value.strip()
        
        # Kamida 2 ta belgi bo'lishi kerak
        if len(value) < 2:
            raise serializers.ValidationError(
                "Ism kamida 2 ta belgidan iborat bo'lishi kerak!"
            )
        
        # Birinchi harfni katta qilish
        value = value.capitalize()
        
        return value
    
    def validate_last_name(self, value):
        """
        Familiya validatsiyasi
        """
        value = value.strip()
        
        if len(value) < 2:
            raise serializers.ValidationError(
                "Familiya kamida 2 ta belgidan iborat bo'lishi kerak!"
            )
        
        value = value.capitalize()
        
        return value
    
    def validate(self, data):
        """
        Barcha fieldlarni birga tekshirish
        data - barcha yuborilgan ma'lumotlar dictionary ko'rinishida
        """
        # Agar tug'ilgan kun kiritilgan bo'lsa, kelajakda bo'lmasligi kerak
        if 'date_of_birth' in data and data['date_of_birth']:
            from datetime import date
            if data['date_of_birth'] > date.today():
                raise serializers.ValidationError({
                    'date_of_birth': "Tug'ilgan kun kelajakda bo'lishi mumkin emas!"
                })
        
        return data

3.3 Qisqa Serializer (List uchun)

class ContactListSerializer(serializers.ModelSerializer):
    """
    Ro'yxat ko'rinishi uchun qisqaroq serializer
    Faqat asosiy ma'lumotlar
    """
    full_name = serializers.SerializerMethodField()
    
    class Meta:
        model = Contact
        fields = ['id', 'full_name', 'phone_number', 'is_favorite']
    
    def get_full_name(self, obj):
        return obj.get_full_name()

🎨 4. CRUD VIEWS YARATISH

4.1 Function-Based Views

contacts/views.py faylida:

from rest_framework.decorators import api_view
from rest_framework.response import Response
from rest_framework import status
from .models import Contact
from .serializers import ContactSerializer, ContactListSerializer

# ============================================
# CREATE va READ (LIST) - Barcha kontaktlar
# ============================================

@api_view(['GET', 'POST'])
def contact_list(request):
    """
    GET:  Barcha kontaktlarni olish
    POST: Yangi kontakt yaratish
    
    URL: /api/contacts/
    """
    
    # -------- GET - Barcha kontaktlarni olish --------
    if request.method == 'GET':
        # Database dan barcha kontaktlarni olish
        contacts = Contact.objects.all()
        
        # Qisqa serializer ishlatamiz (list uchun)
        serializer = ContactListSerializer(contacts, many=True)
        # many=True degani - bir nechta obyektni serialize qilish
        
        # JSON formatda qaytarish
        return Response(serializer.data)
    
    # -------- POST - Yangi kontakt yaratish --------
    elif request.method == 'POST':
        # Foydalanuvchi yuborgan ma'lumotlarni olish
        # request.data - JSON formatdagi ma'lumotlar
        serializer = ContactSerializer(data=request.data)
        
        # Ma'lumotlar to'g'rimi? (validation)
        if serializer.is_valid():
            # Agar to'g'ri bo'lsa, database ga saqlash
            serializer.save()
            
            # 201 Created status code bilan qaytarish
            return Response(
                serializer.data,
                status=status.HTTP_201_CREATED
            )
        
        # Agar validation xatosi bo'lsa
        # 400 Bad Request status code bilan xatolarni qaytarish
        return Response(
            serializer.errors,
            status=status.HTTP_400_BAD_REQUEST
        )


# ============================================
# READ (DETAIL), UPDATE, DELETE - Bitta kontakt
# ============================================

@api_view(['GET', 'PUT', 'PATCH', 'DELETE'])
def contact_detail(request, pk):
    """
    GET:    Bitta kontaktni olish
    PUT:    Kontaktni to'liq yangilash
    PATCH:  Kontaktni qisman yangilash
    DELETE: Kontaktni o'chirish
    
    URL: /api/contacts/<id>/
    pk: Primary Key (kontakt ID si)
    """
    
    # -------- Kontaktni topish --------
    try:
        # pk (primary key) orqali database dan qidirish
        contact = Contact.objects.get(pk=pk)
    except Contact.DoesNotExist:
        # Agar topilmasa, 404 Not Found qaytarish
        return Response(
            {'error': f'ID={pk} kontakt topilmadi!'},
            status=status.HTTP_404_NOT_FOUND
        )
    
    # -------- GET - Kontaktni ko'rish --------
    if request.method == 'GET':
        # Kontaktni serialize qilish
        serializer = ContactSerializer(contact)
        
        # JSON formatda qaytarish
        return Response(serializer.data)
    
    # -------- PUT - To'liq yangilash --------
    elif request.method == 'PUT':
        # PUT - BARCHA fieldlarni yuborish kerak
        # Masalan: first_name, last_name, phone_number - HAMMASI
        
        serializer = ContactSerializer(
            contact,                # Qaysi kontaktni yangilash
            data=request.data       # Yangi ma'lumotlar
        )
        
        if serializer.is_valid():
            serializer.save()  # Database ga saqlash
            return Response(serializer.data)
        
        return Response(
            serializer.errors,
            status=status.HTTP_400_BAD_REQUEST
        )
    
    # -------- PATCH - Qisman yangilash --------
    elif request.method == 'PATCH':
        # PATCH - Faqat o'zgartirmoqchi bo'lgan fieldlarni yuborish
        # Masalan: faqat phone_number ni o'zgartirish
        
        serializer = ContactSerializer(
            contact,
            data=request.data,
            partial=True  # partial=True - qisman yangilash ruxsati
        )
        
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        
        return Response(
            serializer.errors,
            status=status.HTTP_400_BAD_REQUEST
        )
    
    # -------- DELETE - O'chirish --------
    elif request.method == 'DELETE':
        # Database dan o'chirish
        contact.delete()
        
        # 204 No Content - muvaffaqiyatli o'chirildi, content yo'q
        return Response(
            {'message': 'Kontakt muvaffaqiyatli o'chirildi!'},
            status=status.HTTP_204_NO_CONTENT
        )


# ============================================
# QIDIRISH - Ism bo'yicha qidirish
# ============================================

@api_view(['GET'])
def search_contacts(request):
    """
    Ismga qarab kontaktlarni qidirish
    
    URL: /api/contacts/search/?q=Ali
    """
    
    # URL dan 'q' parametrini olish
    # Masalan: /api/contacts/search/?q=Ali
    query = request.GET.get('q', '')  # Default: bo'sh string
    
    if not query:
        return Response(
            {'error': 'Qidiruv so\'zi kiritilmagan!'},
            status=status.HTTP_400_BAD_REQUEST
        )
    
    # Ism yoki familiyada qidiruv so'zi bor kontaktlarni topish
    # icontains - katta-kichik harf farqsiz qidirish
    contacts = Contact.objects.filter(
        first_name__icontains=query
    ) | Contact.objects.filter(
        last_name__icontains=query
    )
    
    serializer = ContactListSerializer(contacts, many=True)
    
    return Response({
        'query': query,
        'count': contacts.count(),
        'results': serializer.data
    })


# ============================================
# SEVIMLILAR - Sevimli kontaktlar
# ============================================

@api_view(['GET'])
def favorite_contacts(request):
    """
    Faqat sevimli kontaktlarni olish
    
    URL: /api/contacts/favorites/
    """
    
    # is_favorite=True bo'lgan kontaktlarni filterlash
    favorites = Contact.objects.filter(is_favorite=True)
    
    serializer = ContactListSerializer(favorites, many=True)
    
    return Response({
        'count': favorites.count(),
        'favorites': serializer.data
    })

🌐 5. URL ROUTING

contacts/urls.py faylini yarating:

from django.urls import path
from . import views

# app_name - URL reverse uchun
app_name = 'contacts'

urlpatterns = [
    # CREATE va LIST - Barcha kontaktlar
    # GET:  Barcha kontaktlarni ko'rish
    # POST: Yangi kontakt yaratish
    path(
        'contacts/',
        views.contact_list,
        name='contact-list'
    ),
    
    # DETAIL - Bitta kontakt
    # GET:    Kontaktni ko'rish
    # PUT:    To'liq yangilash
    # PATCH:  Qisman yangilash
    # DELETE: O'chirish
    path(
        'contacts/<int:pk>/',
        views.contact_detail,
        name='contact-detail'
    ),
    
    # SEARCH - Qidirish
    path(
        'contacts/search/',
        views.search_contacts,
        name='contact-search'
    ),
    
    # FAVORITES - Sevimlilar
    path(
        'contacts/favorites/',
        views.favorite_contacts,
        name='contact-favorites'
    ),
]

contact_project/urls.py asosiy fayliga qo'shish:

from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/', include('contacts.urls')),  # API URLs
]

🛡️ 6. ADMIN PANEL

contacts/admin.py:

from django.contrib import admin
from .models import Contact

@admin.register(Contact)
class ContactAdmin(admin.ModelAdmin):
    """
    Contact modelini admin panelda boshqarish
    """
    
    # Ro'yxatda ko'rinadigan ustunlar
    list_display = [
        'id',
        'first_name',
        'last_name',
        'phone_number',
        'email',
        'is_favorite',
        'created_at'
    ]
    
    # Ro'yxatda filterlash
    list_filter = ['is_favorite', 'created_at']
    
    # Qidiruv maydonlari
    search_fields = [
        'first_name',
        'last_name',
        'phone_number',
        'email'
    ]
    
    # Ro'yxatda o'zgartirishga ruxsat
    list_editable = ['is_favorite']
    
    # Faqat o'qish uchun
    readonly_fields = ['created_at', 'updated_at']
    
    # Sana bo'yicha navigatsiya
    date_hierarchy = 'created_at'
    
    # Har bir sahifada nechta element
    list_per_page = 20

Superuser yaratish:

python manage.py createsuperuser

✅ 7. API TESTING

7.1 Server Ishga Tushirish

python manage.py runserver

7.2 DRF Browsable API

URL'lar:

http://127.0.0.1:8000/api/contacts/ - Barcha kontaktlar
http://127.0.0.1:8000/api/contacts/1/ - 1-kontakt
http://127.0.0.1:8000/api/contacts/search/?q=Ali - Qidirish
http://127.0.0.1:8000/api/contacts/favorites/ - Sevimlilar

7.3 CRUD Operatsiyalari - cURL

CREATE - Yangi kontakt:

curl -X POST http://127.0.0.1:8000/api/contacts/ \
  -H "Content-Type: application/json" \
  -d '{
    "first_name": "Alisher",
    "last_name": "Navoiy",
    "phone_number": "+998901234567",
    "email": "alisher@example.com",
    "address": "Toshkent, Chilonzor"
  }'

READ - Barcha kontaktlar:

curl http://127.0.0.1:8000/api/contacts/

READ - Bitta kontakt:

curl http://127.0.0.1:8000/api/contacts/1/

UPDATE (PUT) - To'liq yangilash:

curl -X PUT http://127.0.0.1:8000/api/contacts/1/ \
  -H "Content-Type: application/json" \
  -d '{
    "first_name": "Alisher",
    "last_name": "Navoiy",
    "phone_number": "+998901234567",
    "email": "alisher.navoiy@example.com",
    "address": "Toshkent, Yunusobod"
  }'

UPDATE (PATCH) - Qisman yangilash:

curl -X PATCH http://127.0.0.1:8000/api/contacts/1/ \
  -H "Content-Type: application/json" \
  -d '{"phone_number": "+998909999999"}'

DELETE - O'chirish:

curl -X DELETE http://127.0.0.1:8000/api/contacts/1/

📊 8. PUT vs PATCH FARQI

PUT - To'liq Yangilash

{
  "first_name": "Alisher",
  "last_name": "Navoiy",
  "phone_number": "+998901234567",
  "email": "alisher@example.com",
  "address": "Toshkent"
}

BARCHA fieldlarni yuborish kerak! Agar birorta field yo'q bo'lsa, o'sha field tozalanadi.

PATCH - Qisman Yangilash

{
  "phone_number": "+998909999999"
}

Faqat o'zgartirmoqchi bo'lgan fieldlarni yuborish! Boshqa fieldlar o'zgarishsiz qoladi.

🎯 AMALIYOT TOPSHIRIQLARI

📝 Topshiriq 1: Validation Qo'shish (Oson)

Maqsad: Qo'shimcha validatsiyalar qo'shish

Email domainini tekshirish (faqat gmail.com, mail.ru)
Telefon raqam +998 bilan boshlanishi kerak
Ism faqat harflardan iborat bo'lishi kerak

📝 Topshiriq 2: Custom Actions (O'rta)

Maqsad: Qo'shimcha endpoint'lar yaratish

/api/contacts/toggle-favorite/<id>/ - Sevimli/oddiy o'zgartirish
/api/contacts/birthday-today/ - Bugun tu'gilgan kunlari
/api/contacts/count/ - Jami kontaktlar soni

📝 Topshiriq 3: Bulk Operations (Qiyin)

Maqsad: Ko'p kontaktlar bilan ishlash

Bir nechta kontaktni bir vaqtda yaratish (bulk create)
Bir nechta kontaktni bir vaqtda o'chirish (bulk delete)
Export - Barcha kontaktlarni CSV formatda yuklab olish

🔗 KEYINGI DARSLAR

✅ Dars 03 tugadi! CRUD operatsiyalarini to'liq o'rgandingiz!

Keyingi darsda:

ModelSerializer batafsil
Nested serializers
Custom fields

📚 QISQA XULOSA

CRUD Operatsiyalari

Operatsiya	HTTP Method	URL	Vazifasi
Create	POST	`/api/contacts/`	Yangi kontakt yaratish
Read (List)	GET	`/api/contacts/`	Barcha kontaktlar
Read (Detail)	GET	`/api/contacts/1/`	Bitta kontakt
Update (To'liq)	PUT	`/api/contacts/1/`	To'liq yangilash
Update (Qisman)	PATCH	`/api/contacts/1/`	Qisman yangilash
Delete	DELETE	`/api/contacts/1/`	O'chirish

HTTP Status Codes

Code	Ma'nosi	Qachon?
200	OK	Muvaffaqiyatli (GET, PUT, PATCH)
201	Created	Yangi yaratildi (POST)
204	No Content	O'chirildi (DELETE)
400	Bad Request	Validation xatosi
404	Not Found	Topilmadi
500	Server Error	Server xatosi

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README.md

🧩 3-DARS: CRUD OPERATSIYALARINI AMALGA OSHIRISH

🎯 Dars Maqsadi

💡 Nima Uchun Contact Book?

🚀 1. YANGI LOYIHA YARATISH

1.1 Loyiha va Ilova Yaratish

1.2 Settings.py Sozlash

💾 2. MODEL YARATISH

2.1 Contact Modeli

2.2 Migratsiya Qilish

🔧 3. SERIALIZER YARATISH

3.1 Serializer Nima?

3.2 ContactSerializer

3.3 Qisqa Serializer (List uchun)

🎨 4. CRUD VIEWS YARATISH

4.1 Function-Based Views

🌐 5. URL ROUTING

🛡️ 6. ADMIN PANEL

✅ 7. API TESTING

7.1 Server Ishga Tushirish

7.2 DRF Browsable API

7.3 CRUD Operatsiyalari - cURL

📊 8. PUT vs PATCH FARQI

PUT - To'liq Yangilash

PATCH - Qisman Yangilash

🎯 AMALIYOT TOPSHIRIQLARI

📝 Topshiriq 1: Validation Qo'shish (Oson)

📝 Topshiriq 2: Custom Actions (O'rta)

📝 Topshiriq 3: Bulk Operations (Qiyin)

🔗 KEYINGI DARSLAR

📚 QISQA XULOSA

CRUD Operatsiyalari

HTTP Status Codes

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03-Implementing CRUD Operations

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03-Implementing CRUD Operations

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parent directory

README.md

🧩 3-DARS: CRUD OPERATSIYALARINI AMALGA OSHIRISH

🎯 Dars Maqsadi

💡 Nima Uchun Contact Book?

🚀 1. YANGI LOYIHA YARATISH

1.1 Loyiha va Ilova Yaratish

1.2 Settings.py Sozlash

💾 2. MODEL YARATISH

2.1 Contact Modeli

2.2 Migratsiya Qilish

🔧 3. SERIALIZER YARATISH

3.1 Serializer Nima?

3.2 ContactSerializer

3.3 Qisqa Serializer (List uchun)

🎨 4. CRUD VIEWS YARATISH

4.1 Function-Based Views

🌐 5. URL ROUTING

🛡️ 6. ADMIN PANEL

✅ 7. API TESTING

7.1 Server Ishga Tushirish

7.2 DRF Browsable API

7.3 CRUD Operatsiyalari - cURL

📊 8. PUT vs PATCH FARQI

PUT - To'liq Yangilash

PATCH - Qisman Yangilash

🎯 AMALIYOT TOPSHIRIQLARI

📝 Topshiriq 1: Validation Qo'shish (Oson)

📝 Topshiriq 2: Custom Actions (O'rta)

📝 Topshiriq 3: Bulk Operations (Qiyin)

🔗 KEYINGI DARSLAR

📚 QISQA XULOSA

CRUD Operatsiyalari

HTTP Status Codes