def test_searching_q_ok(value, db_lookup, db_value):
cls = BooksFilterClass(book_qs)
for v in (value, '"{}"'.format(value)):
like_q = cls.build_q_for_filter(FilterArgs('title', SearchOperators.LIKE, v))
assert like_q.children[0] == ('title__{}'.format(db_lookup), db_value)
i_like_q = cls.build_q_for_filter(FilterArgs('title', SearchOperators.I_LIKE, value))
assert i_like_q.children[0] == ('title__i{}'.format(db_lookup), db_value)
def listing(self, args):
# Django __in lookup is not used, because of null() values
operation, prop = self._get_value(args[0]), self._get_value(args[1])
f_op = ComparisonOperators.EQ if operation == ListOperators.IN else ComparisonOperators.NE
q = Q()
for value_tree in args[2:]:
value = self._get_value(value_tree)
if isinstance(value, Q):
if f_op == ComparisonOperators.EQ:
field_q = value
else:
field_q = ~value
else:
field_q = self._filter_cls_instance.build_q_for_filter(
FilterArgs(
prop,
f_op,
value,
list_operator=operation,
))
if operation == ListOperators.IN:
q |= field_q
else:
q &= field_q
self._filtered_props.add(prop)
return q
def _build_q_for_search(self, operator, str_value):
if operator != ComparisonOperators.EQ:
raise RQLFilterParsingError(
details={
'error': 'Bad search filter: {}.'.format(operator),
})
unquoted_value = self.remove_quotes(str_value)
if not unquoted_value:
return Q()
if not unquoted_value.startswith(RQL_ANY_SYMBOL):
unquoted_value = '*' + unquoted_value
if not unquoted_value.endswith(RQL_ANY_SYMBOL):
unquoted_value += '*'
q = self._build_q_for_extended_search(unquoted_value)
for filter_name in self.search_filters:
q |= self.build_q_for_filter(
FilterArgs(
filter_name,
SearchOperators.I_LIKE,
unquoted_value,
))
return q
def searching(self, args):
# like, ilike
operation, prop, val = tuple(
self._get_value(args[index]) for index in range(3))
self._filtered_props.add(prop)
return self._filter_cls_instance.build_q_for_filter(
FilterArgs(prop, operation, val))
def test_custom_filter_ok():
class CustomCls(BooksFilterClass):
def build_q_for_custom_filter(self, *args, **kwargs):
return Q(id__gte=2)
filter_cls = CustomCls(book_qs)
q = filter_cls.build_q_for_filter(FilterArgs('custom_filter', SearchOperators.I_LIKE, 'value'))
books = [Book.objects.create() for _ in range(2)]
assert list(book_qs.filter(q)) == [books[1]]
def searching(self, args):
# like, ilike
operation, prop, val = tuple(
self._get_value(args[index]) for index in range(3))
filter_args = FilterArgs(prop,
operation,
val,
namespace=self._get_current_namespace())
self._filtered_props.add(filter_args.filter_name)
return self._filter_cls_instance.build_q_for_filter(filter_args)
def comp(self, args):
prop, operation, value = self._extract_comparison(args)
if isinstance(value, Q):
if operation == ComparisonOperators.EQ:
return value
else:
return ~value
filter_args = FilterArgs(prop,
operation,
value,
namespace=self._get_current_namespace())
self._filtered_props.add(filter_args.filter_name)
return self._filter_cls_instance.build_q_for_filter(filter_args)
def filter_field(filter_name, operator, value):
filter_cls = BooksFilterClass(book_qs)
q = filter_cls.build_q_for_filter(
FilterArgs(filter_name, operator, str(value)))
return list(book_qs.filter(q))
def build_q_for_filter(self, data):
""" Django Q() builder for extracted from query RQL expression.
In general, this method should not be overridden.
:param FilterArgs data: Prepared filter data for custom filtering.
:rtype: django.db.models.Q
"""
filter_name, operator, str_value = data.filter_name, data.operator, data.str_value
list_operator = data.list_operator
if filter_name == RQL_SEARCH_PARAM:
return self._build_q_for_search(operator, str_value)
base_item = self.get_filter_base_item(filter_name)
if not base_item:
return Q()
if base_item.get('distinct'):
self._is_distinct = True
filter_item = self.filters[filter_name]
available_lookups = base_item.get('lookups', set())
if list_operator:
list_filter_lookup = FilterLookups.IN \
if list_operator == ListOperators.IN \
else FilterLookups.OUT
if list_filter_lookup not in available_lookups:
raise RQLFilterLookupError(**self._get_error_details(
filter_name,
list_filter_lookup,
str_value,
))
null_values = base_item.get('null_values', set())
filter_lookup = self._get_filter_lookup(
filter_name,
operator,
str_value,
available_lookups,
null_values,
)
django_lookup = self._get_django_lookup(filter_lookup, str_value,
null_values)
if base_item.get('custom'):
return self.build_q_for_custom_filter(
FilterArgs(
filter_name,
operator,
str_value,
list_operator=list_operator,
filter_lookup=filter_lookup,
django_lookup=django_lookup,
))
django_field = base_item['field']
use_repr = base_item.get('use_repr', False)
typed_value = self._get_typed_value(
filter_name,
filter_lookup,
str_value,
django_field,
use_repr,
null_values,
django_lookup,
)
if not isinstance(filter_item, iterable_types):
return self._build_django_q(filter_item, django_lookup,
filter_lookup, typed_value)
# filter has different DB field 'sources'
q = Q()
for item in filter_item:
item_q = self._build_django_q(item, django_lookup, filter_lookup,
typed_value)
if filter_lookup == FilterLookups.NE:
q &= item_q
else:
q |= item_q
return q
def comp(self, args):
prop, operation, value = self._extract_comparison(args)
self._filtered_props.add(prop)
return self._filter_cls_instance.build_q_for_filter(
FilterArgs(prop, operation, value))
