drf-mongo-filters

Filtering tools for django rest framework mongoengine. Very similar to django-filters.

Sinopsis

Declare filters for each query argument and bind it to Filterset:

class SomeFilterset(Filterset):
  foo = filters.CharFilter()
  bar = filters.CharFilter('contains')

Apply filters to queryset:

fs = SomeFilterset(QueryDict("foo=Foo&bar=Bar"))
qs = fs.filter_queryset(qs)
# equal to
qs.filter(foo="Foo").filter(bar__contains="Bar")

Auto generate filters for each model field with equality comparision:

class SomeFilterset(ModelFilterset):
  class Meta:
    model=SomeDoc

Set backend to apply filtering automatically in GenericAPIView.filter_queryset, usually called from ListModelMixin.list:

class TestView(ListAPIView):
  filter_backends = (MongoFilterBackend,)
  filter_class = SomeFilterset

Implemented filters

• BooleanFilter: parses boolean val using NullBooleanField
• ExistsFilter: parses boolean, filters with foo_exists=val
• CharFilter: takes string
• UUIDFilter: parses uuid
• IntegerFilter: parses int
• FloatFilter: parses float
• DateTimeFilter: parses datetime using serializers.DateTimeField
• DateFilter: parses date, filters datetimes with with gte and lte to match whole day
• ObjectIdFilter: parses bson.ObjectId
• ListFilter: gathers all values with same name; optionally parses with field, specified with argument child
• AnyFilter: filters with foo_in=[vals]
• NoneFilter: filters with foo_nin=[vals]
• AllFilter: filters with foo_all=[vals]
• DictFilter: gathers all values prefixed with same name; optionally parses with field, specified with argument child
• RangeFilter: takes foo.min&foo.max and flters with gte and lte
• GeoNearFilter: parses geopoint from foo.lng&foo.lat, converts to GeoJSON Point and filters with near operator
• GeoDistanceFilter: parses float and filters with max_distance operator

API

See docstrings for details.

Filter

class

Attributes:

• field_class: class used to create serializer field
• lookup_type: operator to use for matching

Filter(lookup=None, name=None, **kwargs)

Args:

• lookup: override matching operator
• name: override binding name
• kwargs: args to initialize field, in particular: source specifies model attribute to compare

Filterset

Filterset(data=None)

Arg:

• data: QueryDict or dict containing filtering params

filter_queryset(queryset)

Applies all filters to queryset.

ModelFilterset

class

Attribs:

• default_filters_mapping: mapping of field classes to filter classes
• filters_mapping: to override defaults

Meta:

• model: document definition to examine
• fields: restrict fields to given list
• exclude: exclude fields from examining
• kwargs: mapping of field names to args for filters