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34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
import django_filters
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from django.contrib.contenttypes.models import ContentType
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from .models import CustomField
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class CustomFieldFilter(django_filters.Filter):
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"""
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Filter objects by the presence of a CustomFieldValue. The filter's name is used as the CustomField name.
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"""
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def filter(self, queryset, value):
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if not value.strip():
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return queryset
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return queryset.filter(
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custom_field_values__field__name=self.name,
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custom_field_values__serialized_value=value,
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)
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class CustomFieldFilterSet(django_filters.FilterSet):
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"""
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Dynamically add a Filter for each CustomField applicable to the parent model.
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"""
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def __init__(self, *args, **kwargs):
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super(CustomFieldFilterSet, self).__init__(*args, **kwargs)
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obj_type = ContentType.objects.get_for_model(self._meta.model)
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custom_fields = CustomField.objects.filter(obj_type=obj_type, is_filterable=True)
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for cf in custom_fields:
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self.filters['cf_{}'.format(cf.name)] = CustomFieldFilter(name=cf.name)
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