PYTHON

django serializer

# serialization in django

from rest_framework import serializers
from .models import Product

class ProductSerializers(serializers.ModelSerializer):
    class Meta:
        model = Product
        fields = '__all__'
        
# adding extra fields, that are in models
    def to_representation(self, instance):
      data = super().to_representation(instance)
      data['is_on_sale'] = instance.is_on_sale()
      data['current_price'] = instance.current_price()
      return data

serialization in django

serialization in django

from rest_framework import serializers
from .models import Product

class ProductSerializers(serializers.ModelSerializer):
    class Meta:
        model = Product
        fields = '__all__'
        
# Serializers allow complex data such as querysets and model instances to be converted to native Python datatypes that can then be easily rendered into JSON, XML or other content types. 
# Serializers also provide deserialization, allowing parsed data to be converted back into complex types, after first validating the incoming data.

what is serialization in django

It is just a method of converting a type of data into another, most probably in 
text format, and in dictionary or into a human managable form

serialization in python

serialization in django

from rest_framework import serializers
from .models import Student

class ProductSerializers(serializers.ModelSerializer):
    class Meta:
        model = Student
        fields = '__all__'
#in views.py
from django.shortcuts import render
from .serializers import StudentSerializer
from django.http import HttpResponse
from .models import Student
from rest_framework.renderers import JSONRenderer


# Create your views here.
def students(request):
    stu = Student.objects.all()
#    stu = Student.objects.get(id=2)  to get one object
#    serializer = StudentSerializer(stu)  we dont need many=True
    serializer = StudentSerializer(stu, many=True)
    json_data = JSONRenderer().render(serializer.data)
    print(serializer)
    return HttpResponse(json_data, content_type ='application/json' )