viewsets CLass base views

views.py configure as:

viewsets --------> ViewSet
    |                   |-----------Router
    |------------>ModelViewSet
    |
    |------------>ReadOnlyModelViewSet

• viewsets.ViewSet call করলে list(), create(), retrieve(), update(), delete() এই সব function customly নিজে নিজে করতে হয়।

• অথবা viewsets.ModelViewSet call করলে automatic list(), create(), retrieve(), update(), delete() এই সব function execute করা যায়।

• viewsets.ReadOnlyModelViewSet ব্যবহার করে non-id or id base operation এর list() function execute করা যায়।

• url configuration টা একটু আলাদা। router define করতে হয়।

github link

একটি demo DataBase table same as funcrion and classbase:

models.py

from django.db import models

# Create your models here.
class Student(models.Model):
    id = models.IntegerField(primary_key=True)
    name = models.CharField(max_length=20)
    score = models.DecimalField(max_digits=10,decimal_places=3)

    def __str__(self):
        return self.name

then serializer data-base table for querify and work in Views.py as DRF procedure

serializers.py

from rest_framework import serializers
from .models import Student

class StudentSerializer(serializers.ModelSerializer):
    class Meta:
        model=Student
        fields=['id', 'name','score']

আমরা এই post এ viewsets class base view ( viewsets.ModelViewSet ) নিয়ে কাজ করেছি, যা ১ টা stage এ ঘটেছে।

• class parameter এ viewsets.ModelViewSet define করলেই automatic সব operation করা যায়।

• class parameter এ viewsets.ReadOnlyModelViewSet define করলে only get বা list() operation করা যায়।

views.py

from cbvApp.models import Student
from cbvApp.serializers import StudentSerializer

from rest_framework import viewsets

# just call and use handler method
class StudentViewSet(viewsets.ModelViewSet):
    queryset = Student.objects.all()
    serializer_class = StudentSerializer


class StudentReadOnlyViewSet(viewsets.ReadOnlyModelViewSet):
    queryset = Student.objects.all()
    serializer_class = StudentSerializer

urls.py

urls.py এর configuration different:

• 1st need to create a router. (drf provides DefaultRouter)

• 2nd register viewsets. ('url',views.YourViewClass)

• 3rd diclar url inside urlpatterns which you expect. (include(router.urls))

from django.urls import path,include
from .import views
from rest_framework.routers import DefaultRouter

router = DefaultRouter()
router.register('std',views.StudentViewSet)
router.register('rostd',views.StudentReadOnlyViewSet)

urlpatterns = [
    path('', include(router.urls)),

]