[Solved] This FilterSet code raises an error:class ArticleFilter(FilterSet): title = CharFilter(lookup_expr='icontains') class Meta: model = Article fields = ['title']What is the likely cause? | Django

Django - DRF Advanced Features

This FilterSet code raises an error:

class ArticleFilter(FilterSet):
    title = CharFilter(lookup_expr='icontains')
    class Meta:
        model = Article
        fields = ['title']

What is the likely cause?

Alookup_expr cannot be 'icontains'

BCharFilter is not imported from django_filters

CFields list should not include 'title' if declared explicitly

DMeta class must be outside FilterSet

Step-by-Step Solution

Solution:

Step 1: Check for missing imports
Using CharFilter requires importing it from django_filters; missing import causes error.
Step 2: Validate other parts
lookup_expr='icontains' is valid; fields can include explicitly declared fields; Meta inside class is correct.
Final Answer:
CharFilter is not imported from django_filters -> Option B
Quick Check:
Always import filters like CharFilter [OK]

Quick Trick: Import all filter classes you use explicitly [OK]

Common Mistakes:

MISTAKES

Master "DRF Advanced Features" in Django

9 interactive learning modes - each teaches the same concept differently

More Django Quizzes

This FilterSet code raises an error: