def _get_requested_filters(self, **kwargs):
"""
Convert 'filters' query params into a dict that can be passed
to Q. Returns a dict with two fields, 'include' and 'exclude',
which can be used like:
result = self._get_requested_filters()
q = Q(**result['_include'] & ~Q(**result['_exclude'])
"""
filters_map = kwargs.get('filters_map')
view = getattr(self, 'view', None)
if view:
serializer_class = view.get_serializer_class()
serializer = serializer_class()
if not filters_map:
filters_map = view.get_request_feature(view.FILTER)
else:
serializer = None
out = TreeMap()
for key, value in six.iteritems(filters_map):
# Inclusion or exclusion?
if key[0] == '-':
key = key[1:]
category = '_exclude'
else:
category = '_include'
# for relational filters, separate out relation path part
if '|' in key:
rel, key = key.split('|')
rel = rel.split('.')
else:
rel = None
terms = key.split('.')
# Last part could be operator, e.g. "events.capacity.gte"
if len(terms) > 1 and terms[-1] in self.VALID_FILTER_OPERATORS:
operator = terms.pop()
else:
operator = None
# All operators except 'range' and 'in' should have one value
if operator == 'range':
value = value[:2]
if value[0] == '':
operator = 'lte'
value = value[1]
elif value[1] == '':
operator = 'gte'
value = value[0]
elif operator == 'in':
# no-op: i.e. accept `value` as an arbitrarily long list
pass
elif operator in self.VALID_FILTER_OPERATORS:
value = value[0]
if (operator == 'isnull'
and isinstance(value, six.string_types)):
value = is_truthy(value)
elif operator == 'eq':
operator = None
if serializer:
s = serializer
if rel:
# get related serializer
model_fields, serializer_fields = serializer.resolve(rel)
s = serializer_fields[-1]
s = getattr(s, 'serializer', s)
rel = [Meta.get_query_name(f) for f in model_fields]
# perform model-field resolution
model_fields, serializer_fields = s.resolve(terms)
field = serializer_fields[-1] if serializer_fields else None
# if the field is a boolean,
# coerce the value
if field and isinstance(
field,
(serializers.BooleanField, serializers.NullBooleanField)):
value = is_truthy(value)
key = '__'.join([Meta.get_query_name(f) for f in model_fields])
else:
key = '__'.join(terms)
if operator:
key += '__%s' % operator
# insert into output tree
path = rel if rel else []
path += [category, key]
out.insert(path, value)
return out
def _get_requested_filters(self, **kwargs):
"""
Convert 'filters' query params into a dict that can be passed
to Q. Returns a dict with two fields, 'include' and 'exclude',
which can be used like:
result = self._get_requested_filters()
q = Q(**result['include'] & ~Q(**result['exclude'])
"""
filters_map = (kwargs.get('filters_map')
or self.view.get_request_feature(self.view.FILTER))
out = TreeMap()
for spec, value in six.iteritems(filters_map):
# Inclusion or exclusion?
if spec[0] == '-':
spec = spec[1:]
inex = '_exclude'
else:
inex = '_include'
# for relational filters, separate out relation path part
if '|' in spec:
rel, spec = spec.split('|')
rel = rel.split('.')
else:
rel = None
parts = spec.split('.')
# Last part could be operator, e.g. "events.capacity.gte"
if len(parts) > 1 and parts[-1] in self.VALID_FILTER_OPERATORS:
operator = parts.pop()
else:
operator = None
# All operators except 'range' and 'in' should have one value
if operator == 'range':
value = value[:2]
elif operator == 'in':
# no-op: i.e. accept `value` as an arbitrarily long list
pass
elif operator in self.VALID_FILTER_OPERATORS:
value = value[0]
if (operator == 'isnull'
and isinstance(value, six.string_types)):
value = is_truthy(value)
elif operator == 'eq':
operator = None
node = FilterNode(parts, operator, value)
# insert into output tree
path = rel if rel else []
path += [inex, node.key]
out.insert(path, node)
return out
def _extract_filters(self, **kwargs):
"""
Convert 'filters' query params into a dict that can be passed
to Q. Returns a dict with two fields, 'include' and 'exclude',
which can be used like:
result = self._extract_filters()
q = Q(**result['include'] & ~Q(**result['exclude'])
"""
filters_map = (
kwargs.get('filters_map') or
self.view.get_request_feature(self.view.FILTER)
)
out = TreeMap()
for spec, value in six.iteritems(filters_map):
# Inclusion or exclusion?
if spec[0] == '-':
spec = spec[1:]
inex = '_exclude'
else:
inex = '_include'
# for relational filters, separate out relation path part
if '|' in spec:
rel, spec = spec.split('|')
rel = rel.split('.')
else:
rel = None
parts = spec.split('.')
# Last part could be operator, e.g. "events.capacity.gte"
if len(parts) > 1 and parts[-1] in self.VALID_FILTER_OPERATORS:
operator = parts.pop()
else:
operator = None
# All operators except 'range' and 'in' should have one value
if operator == 'range':
value = value[:2]
elif operator == 'in':
# no-op: i.e. accept `value` as an arbitrarily long list
pass
elif operator in self.VALID_FILTER_OPERATORS:
value = value[0]
if (
operator == 'isnull' and
isinstance(value, six.string_types)
):
value = value.lower() not in self.FALSEY_STRINGS
elif operator == 'eq':
operator = None
node = FilterNode(parts, operator, value)
# insert into output tree
path = rel if rel else []
path += [inex, node.key]
out.insert(path, node)
return out