54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# Copyright 2012 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Copyright 2012 Nebula, Inc.
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#
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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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"""
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Template tags for parsing date strings.
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"""
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from datetime import datetime
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from django import template
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from django.utils import timezone
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register = template.Library()
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class ParseDateNode(template.Node):
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def render(self, datestring):
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"""Parses a date-like input string into a timezone aware Python
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datetime.
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"""
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formats = ["%Y-%m-%dT%H:%M:%S.%f", "%Y-%m-%d %H:%M:%S.%f",
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"%Y-%m-%dT%H:%M:%S", "%Y-%m-%d %H:%M:%S"]
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if datestring:
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for format in formats:
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try:
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parsed = datetime.strptime(datestring, format)
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if not timezone.is_aware(parsed):
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parsed = timezone.make_aware(parsed, timezone.utc)
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return parsed
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except Exception:
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pass
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return None
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@register.filter(name='parse_date')
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def parse_date(value):
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return ParseDateNode().render(value)
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