DRF模糊查询

#models.py
from django.db import models

# Create your models here.

# 定义一个菜品种类
class Category(models.Model):
    name = models.CharField(max_length=10,verbose_name='菜品种类')
    def __str__(self):
        return self.name

# 定义一个菜品
class Dish(models.Model):
    name = models.CharField(max_length=32,verbose_name='菜品名称')
    price = models.DecimalField(max_digits=5,decimal_places=2,verbose_name='菜品价格')
    category = models.ForeignKey(Category,on_delete=models.CASCADE,verbose_name='菜品所属类别')
    picture = models.ImageField(upload_to='dish_pictures',verbose_name='菜品图片')
    def __str__(self):
        return self.name

# view.py
from rest_framework.permissions import IsAuthenticated
from rest_framework.viewsets import ReadOnlyModelViewSet
from django_filters.rest_framework import DjangoFilterBackend
from .models import Category, Dish
from .Serializer import CategorySerializer, DishSerializer
from .filters import DishModelFilter
# Create your views here.
# 返回类别
class CategoryView(ReadOnlyModelViewSet):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    permission_classes = [IsAuthenticated]


class DishView(ReadOnlyModelViewSet):
    queryset = Dish.objects.all()
    serializer_class = DishSerializer
    filterset_fields = ['category']
    filter_backends = [DjangoFilterBackend]
    filterset_class = DishModelFilter
    permission_classes = [IsAuthenticated]

# filters.py
import django_filters
from .models import Dish
 
class DishModelFilter(django_filters.FilterSet):
    name = django_filters.CharFilter(method='filter_name')
    category = django_filters.CharFilter(method='filter_category')
 
    def filter_name(self, queryset, name, value):
        return queryset.filter(name__icontains=value)
    
    def filter_category(self, queryset, name, value):
        return queryset.filter(category_id=value)
    
 
    class Meta:
        model = Dish
        fields = ['name','category']