61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
# Copyright 2016 Cisco Systems, 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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from django import template
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register = template.Library()
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@register.inclusion_tag('bootstrap/breadcrumb.html',
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takes_context=True)
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def breadcrumb_nav(context):
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"""A logic heavy function for automagically creating a breadcrumb.
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It uses the dashboard, panel group(if it exists), then current panel.
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Can also use a "custom_breadcrumb" context item to add extra items.
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"""
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breadcrumb = []
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dashboard = context.request.horizon['dashboard']
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try:
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panel_groups = dashboard.get_panel_groups()
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except KeyError:
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panel_groups = None
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panel_group = None
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panel = context.request.horizon['panel']
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# Add panel group, if there is one
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if panel_groups:
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for group in panel_groups.values():
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if panel.slug in group.panels and group.slug != 'default':
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panel_group = group
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break
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# Remove panel reference if that is the current page
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if panel.get_absolute_url() == context.request.path:
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panel = None
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# Get custom breadcrumb, if there is one.
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custom_breadcrumb = context.get('custom_breadcrumb')
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# Build list of tuples (name, optional url)
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breadcrumb.append((dashboard.name, None))
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if panel_group:
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breadcrumb.append((panel_group.name, None))
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if panel:
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breadcrumb.append((panel.name, panel.get_absolute_url()))
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if custom_breadcrumb:
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breadcrumb.extend(custom_breadcrumb)
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breadcrumb.append((context.get('page_title'), None))
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return {'breadcrumb': breadcrumb}
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