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Fix FilterSet warnings. (#4660)
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@ -38,31 +38,19 @@ class BaseFilterBackend(object):
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if django_filters:
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from django_filters.filterset import FilterSetMetaclass as DFFilterSetMetaclass
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from django_filters.rest_framework.filterset import FilterSet as DFFilterSet
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class FilterSetMetaclass(DFFilterSetMetaclass):
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def __new__(cls, name, bases, attrs):
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class FilterSet(DFFilterSet):
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def __init__(self, *args, **kwargs):
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warnings.warn(
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"The built in 'rest_framework.filters.FilterSet' is pending deprecation. "
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"You should use 'django_filters.rest_framework.FilterSet' instead.",
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PendingDeprecationWarning
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)
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return super(FilterSetMetaclass, cls).__new__(cls, name, bases, attrs)
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_BaseFilterSet = DFFilterSet
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return super(FilterSet, self).__init__(*args, **kwargs)
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else:
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# Dummy metaclass just so we can give a user-friendly error message.
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class FilterSetMetaclass(type):
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def __init__(self, name, bases, attrs):
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# Assert only on subclasses, so we can define FilterSet below.
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if bases != (object,):
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assert False, 'django-filter must be installed to use the `FilterSet` class'
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super(FilterSetMetaclass, self).__init__(name, bases, attrs)
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_BaseFilterSet = object
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class FilterSet(six.with_metaclass(FilterSetMetaclass, _BaseFilterSet)):
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pass
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def FilterSet():
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assert False, 'django-filter must be installed to use the `FilterSet` class'
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class DjangoFilterBackend(BaseFilterBackend):
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