homework

Serializer

from rest_framework import serializers
from django.conf import settings
from . import models
class CarModelSerializer(serializers.Serializer):
    re_password = serializers.CharField(min_length=3,max_length=6,write_only=True)

    class Meta:
        model = models.Car
        fields = ('name',)
        # 'colour','icon','price','brand','re_password')
        extra_kwargs = {
            'name':{
                'min_length':3,
                'max_length':8,
                'error_messages':{
                    'min_length':'short',
                    'max_length':'long',
                }
            },
            # 'colour':{
            #     'read_only':True
            # },
            # 'color':{
            #     'write_only':True
            # },
        }
    def validate_name(self,value):
        if 'g' in value.lower():
            raise serializers.ValidationError('no g in name')
        return value

    def validate(self, attrs):
        pass

view

from django.shortcuts import render
from . import models
from rest_framework.views import APIView
from rest_framework.response import Response
from . import serializers

# Create your views here.

class CarV3APIView(APIView):
    def get(self,request,*args,**kwargs):
        pk = kwargs.get("pk")
        if pk:
            car_obj = models.Car.objects.filter(is_delete=False,pk=pk).first()
            if not car_obj:
                return Response({
                    'status':1,
                    'msg':'pk error',
                },status=400)
            car_ser = serializers.CarModelSerializer(car_obj,many=False)
            print('i',car_ser)
            return Response({
                'status':0,
                'msg':'ok',
                'results':car_ser.data
            })
        else:
            car_query = models.Car.objects.filter(is_delete=False).all()
            print('e',car_query)
            car_ser = serializers.CarModelSerializer(car_query,many=True)
            print('e',car_ser.data)
            return Response({
                'status':0,
                'msg':'ok',
                'results':car_ser.data
            })