尽管正确的数据库整理和使用 icontains，Django 仍返回区分大小写的结果

Question

I have the following DRF view:

class DictionaryFuzzyView(generics.ListAPIView):
    queryset = Dictionary.objects.filter(disabled=False,).order_by(Length('simplified').asc())
    serializer_class = FuzzySerializer
    filter_backends = (filters.DjangoFilterBackend, OrderingFilter)
    pagination_class = LimitOffsetPagination
    ordering_fields = ['id']
    filter_class = FuzzyFilter

FuzzyFilter looks like this:

class FuzzyFilter(filters.FilterSet):
    simplified = filters.CharFilter(field_name='simplified', lookup_expr='contains')
    traditional = filters.CharFilter(field_name='traditional', lookup_expr='contains')
    pinyin_marks = filters.CharFilter(field_name='pinyin_marks', lookup_expr='contains')
    translation = filters.CharFilter(field_name='translation', lookup_expr='icontains')
    frequency = filters.CharFilter(field_name='frequency', lookup_expr='exact')
    hsk = NumberInFilter(field_name='level', lookup_expr='in')

And I do a call like this:

http://127.0.0.1:8000/api/v1/fuzzy/?translation=One

I'll only get results that contain "One", never results that contain "one", and vice versa.

I am using MySQL as my database engine, but as far as I can tell, my collations are correct for case insensitive searching:

I am on Django 3.x.

What could possibly be causing it/what's the best method to resolve/troubleshoot this?

Answer 1

I had the particular field, translation, set to binary.

When I unchecked this, it worked as intended.