In Django, if you want to filter a model based on multiple values for a single field, you can use the Q object from the django.db.models module. You can create a dynamic Q object by iterating through your list of values and combining them with the | (OR) operator. Then, you can use this Q object in your queryset.

Here’s an example using the icontains filter for the paragraph field:

from django.db.models import Q
from django_filters import rest_framework as filters
from .models import Content

class ContentFilter(filters.FilterSet):
    paragraph_contains = filters.CharFilter(method='filter_paragraph_contains')

    class Meta:
        model = Content
        fields = ['paragraph_contains']

    def filter_paragraph_contains(self, queryset, name, value):
        # Split the input value into a list of search terms
        search_terms = value.split()

        # Create a dynamic Q object combining icontains for each search term
        q_objects = Q()
        for term in search_terms:
            q_objects |= Q(paragraph__icontains=term)

        # Apply the filter to the queryset
        queryset = queryset.filter(q_objects)

        return queryset

In this example:

• We define a custom filter named paragraph_contains.
• We use the CharFilter to accept a string value.
• In the filter_paragraph_contains method, we split the input value into a list of search terms.
• We then create a dynamic Q object by iterating through the search terms and combining them with the | operator.
• Finally, we apply the filter to the queryset using filter(q_objects).

Now, when you use this filter in your Django view or DRF endpoint, you can pass a string with multiple search terms separated by spaces, and it will filter the queryset accordingly.

class ContentView(generics.ListAPIView):
    queryset = Content.objects.all()
    serializer_class = ContentSerializer
    filterset_class = ContentFilter

For example:

• /api/content/?paragraph_contains=McDonald
• /api/content/?paragraph_contains=McDonald MacDonald
• /api/content/?paragraph_contains=McDonald%20MacDonald (using URL-encoded spaces)