How I used FilterView instead of ListView to make filtering easier

Django, filter, django-bootstrap3, ListView

Thanks to FilterView, you can simplify and reduce the code for displaying goods, products, and so on. That will reduce the code at times! At first I used ListView and wrote a lot when in order to be able to filter by queries. Until one of my good friends advised me django-filter . After reading more about him, I realized that this is what you need. After, when I wanted to use all my views as an object. This puzzled me a little, until a friend again helped me out with a hint about using FilterView, and now we will discuss it in more detail:

We have a Product model which has a Collection category.

class Collection(models.Model):
    name = models.CharField(verbose_name='Коллекция', max_length=150, default=None)
    slug = models.SlugField(verbose_name='ссылка')
    is_active = models.BooleanField(verbose_name='Статус активности', default=True)
 
    class Meta:
        db_table = 'collection'
        verbose_name = 'Коллекция'
        verbose_name_plural = 'Коллекции'
        ordering = ('name',)
 
    def __str__(self):
        return self.name
 
class Product(models.Model):
    name = models.CharField('название товара', max_length=200)
    category = models.ForeignKey(Category, blank=True, null=True, verbose_name='Категория')
    collection = models.ForeignKey(Collection, blank=True, null=True, verbose_name='Коллекция')
    price = models.IntegerField(verbose_name='цена в ₸', default=0)
    discount = models.IntegerField(verbose_name='скидка в %', default=0)
    recommended = models.BooleanField(verbose_name='Рекомендуемый товар', default=False)
    ....

We need to display it in the template so that we can filter or sort it however we want. To do this, we will create filters.py where we write:

Ничем не отличается от джанго формы 
 
import django_filters
from .models import Product
 
CHOICES =[
        ["name", "по алфавиту"],
        ["price", "дешевые сверху"],
        ["-price", "дорогие сверху"]
]
 
 
class ProductFilter(django_filters.FilterSet):
    name = django_filters.CharFilter(name='name', lookup_expr='icontains')
    category__slug = django_filters.CharFilter()
    price__gt = django_filters.NumberFilter(name='price', lookup_expr='gt')
    price__lt = django_filters.NumberFilter(name='price', lookup_expr='lt')
    ordering = django_filters.OrderingFilter(choices=CHOICES, required=True, empty_label=None,)
 
    class Meta:
        model = Product
        exclude = [field.name for field in Product._meta.fields]
        order_by_field = 'name'

Next, create a view that inherits from FilterView

class CollectionViews(FilterView):
    template_name = 'product/coolections.html'
    model = Product
    paginate_by = 10
    filterset_class = ProductFilter
    context_object_name = 'products'
 
    def get_queryset(self):
        qs = self.model.objects.prefetch_related('photo_set')
        if self.kwargs.get('collec_slug'):
            qs = qs.filter(collection__slug=self.kwargs['collec_slug'])
        return qs

If you are using bootstrap you can use #### django-bootstrap3

{% load bootstrap_tags %} {{ form|as_bootstrap }}