Vitamin C

Django django-filter

Use django-filter with CBV

django-filter is generic system for filtering Django QuerySets based on user selections. The documentation uses it in a function-based view as a product model:

from django.db import models

class Product(models.Model):
    name = models.CharField(max_length=255)
    price = models.DecimalField()
    description = models.TextField()
    release_date = models.DateField()
    manufacturer = models.ForeignKey(Manufacturer)

The filter will be as follows:

import django_filters

class ProductFilter(django_filters.FilterSet):
    name = django_filters.CharFilter(lookup_expr='iexact')

    class Meta:
        model = Product
        fields = ['price', 'release_date']

To use this in a CBV, override get_queryset() of the ListView, then return the filtered querset:

from django.views.generic import ListView
from .filters import ProductFilter

class ArticleListView(ListView):
    model = Product

    def get_queryset(self):
        qs = self.model.objects.all()
        product_filtered_list = ProductFilter(self.request.GET, queryset=qs)
        return product_filtered_list.qs

It is possible to access the filtered objects in your views, such as with pagination, in f.qs. This will paginate the filtered objects list.

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