47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import six
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def exact_filter(query, model, filters):
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"""Applies exact match filtering to a query.
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Returns the updated query. Modifies filters argument to remove
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filters consumed.
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:param query: query to apply filters to
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:param model: model object the query applies to, for IN-style
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filtering
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:param filters: dictionary of filters; values that are lists,
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tuples, sets, or frozensets cause an 'IN' test to
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be performed, while exact matching ('==' operator)
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is used for other values
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"""
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filter_dict = {}
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if filters is None:
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filters = {}
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for key, value in six.iteritems(filters):
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if isinstance(value, (list, tuple, set, frozenset)):
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column_attr = getattr(model, key)
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query = query.filter(column_attr.in_(value))
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else:
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filter_dict[key] = value
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if filter_dict:
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query = query.filter_by(**filter_dict)
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return query
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