author | Nishanth Amuluru <nishanth@fossee.in> |
Tue, 11 Jan 2011 12:36:55 +0530 | |
changeset 141 | ed2dadfc829a |
parent 69 | c6bca38c1cbf |
permissions | -rw-r--r-- |
69
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""" |
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Tagging related views. |
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""" |
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from django.http import Http404 |
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from django.utils.translation import ugettext as _ |
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from django.views.generic.list_detail import object_list |
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|
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from tagging.models import Tag, TaggedItem |
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from tagging.utils import get_tag, get_queryset_and_model |
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|
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def tagged_object_list(request, queryset_or_model=None, tag=None, |
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related_tags=False, related_tag_counts=True, **kwargs): |
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""" |
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A thin wrapper around |
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``django.views.generic.list_detail.object_list`` which creates a |
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``QuerySet`` containing instances of the given queryset or model |
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tagged with the given tag. |
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|
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In addition to the context variables set up by ``object_list``, a |
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``tag`` context variable will contain the ``Tag`` instance for the |
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tag. |
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|
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If ``related_tags`` is ``True``, a ``related_tags`` context variable |
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will contain tags related to the given tag for the given model. |
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Additionally, if ``related_tag_counts`` is ``True``, each related |
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tag will have a ``count`` attribute indicating the number of items |
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which have it in addition to the given tag. |
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""" |
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if queryset_or_model is None: |
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try: |
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queryset_or_model = kwargs.pop('queryset_or_model') |
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except KeyError: |
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raise AttributeError(_('tagged_object_list must be called with a queryset or a model.')) |
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|
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if tag is None: |
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try: |
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tag = kwargs.pop('tag') |
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except KeyError: |
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raise AttributeError(_('tagged_object_list must be called with a tag.')) |
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|
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tag_instance = get_tag(tag) |
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if tag_instance is None: |
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raise Http404(_('No Tag found matching "%s".') % tag) |
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queryset = TaggedItem.objects.get_by_model(queryset_or_model, tag_instance) |
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if not kwargs.has_key('extra_context'): |
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kwargs['extra_context'] = {} |
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kwargs['extra_context']['tag'] = tag_instance |
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if related_tags: |
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kwargs['extra_context']['related_tags'] = \ |
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Tag.objects.related_for_model(tag_instance, queryset_or_model, |
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counts=related_tag_counts) |
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return object_list(request, queryset, **kwargs) |