142 lines
5.2 KiB
Python
142 lines
5.2 KiB
Python
from django.template import loader, RequestContext
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from django.http import Http404, HttpResponse
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from django.core.xheaders import populate_xheaders
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from django.core.paginator import ObjectPaginator, InvalidPage
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from django.core.exceptions import ObjectDoesNotExist
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def object_list(request, queryset, paginate_by=None, page=None,
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allow_empty=True, template_name=None, template_loader=loader,
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extra_context=None, context_processors=None, template_object_name='object',
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mimetype=None):
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"""
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Generic list of objects.
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Templates: ``<app_label>/<model_name>_list.html``
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Context:
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object_list
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list of objects
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is_paginated
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are the results paginated?
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results_per_page
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number of objects per page (if paginated)
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has_next
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is there a next page?
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has_previous
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is there a prev page?
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page
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the current page
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next
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the next page
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previous
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the previous page
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pages
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number of pages, total
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hits
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number of objects, total
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last_on_page
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the result number of the last of object in the
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object_list (1-indexed)
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first_on_page
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the result number of the first object in the
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object_list (1-indexed)
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page_range:
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A list of the page numbers (1-indexed).
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"""
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if extra_context is None: extra_context = {}
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queryset = queryset._clone()
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if paginate_by:
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paginator = ObjectPaginator(queryset, paginate_by)
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if not page:
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page = request.GET.get('page', 1)
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try:
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page_number = int(page)
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except ValueError:
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if page == 'last':
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page_number = paginator.pages
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else:
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# Page is not 'last', nor can it be converted to an int
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raise Http404
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try:
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object_list = paginator.get_page(page_number - 1)
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except InvalidPage:
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if page_number == 1 and allow_empty:
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object_list = []
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else:
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raise Http404
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c = RequestContext(request, {
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'%s_list' % template_object_name: object_list,
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'is_paginated': paginator.pages > 1,
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'results_per_page': paginate_by,
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'has_next': paginator.has_next_page(page_number - 1),
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'has_previous': paginator.has_previous_page(page_number - 1),
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'page': page_number,
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'next': page_number + 1,
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'previous': page_number - 1,
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'last_on_page': paginator.last_on_page(page_number - 1),
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'first_on_page': paginator.first_on_page(page_number - 1),
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'pages': paginator.pages,
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'hits' : paginator.hits,
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'page_range' : paginator.page_range
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}, context_processors)
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else:
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c = RequestContext(request, {
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'%s_list' % template_object_name: queryset,
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'is_paginated': False
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}, context_processors)
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if not allow_empty and len(queryset) == 0:
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raise Http404
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for key, value in extra_context.items():
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if callable(value):
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c[key] = value()
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else:
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c[key] = value
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if not template_name:
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model = queryset.model
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template_name = "%s/%s_list.html" % (model._meta.app_label, model._meta.object_name.lower())
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t = template_loader.get_template(template_name)
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return HttpResponse(t.render(c), mimetype=mimetype)
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def object_detail(request, queryset, object_id=None, slug=None,
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slug_field='slug', template_name=None, template_name_field=None,
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template_loader=loader, extra_context=None,
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context_processors=None, template_object_name='object',
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mimetype=None):
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"""
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Generic detail of an object.
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Templates: ``<app_label>/<model_name>_detail.html``
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Context:
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object
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the object
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"""
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if extra_context is None: extra_context = {}
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model = queryset.model
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if object_id:
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queryset = queryset.filter(pk=object_id)
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elif slug and slug_field:
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queryset = queryset.filter(**{slug_field: slug})
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else:
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raise AttributeError, "Generic detail view must be called with either an object_id or a slug/slug_field."
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try:
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obj = queryset.get()
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except ObjectDoesNotExist:
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raise Http404, "No %s found matching the query" % (model._meta.verbose_name)
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if not template_name:
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template_name = "%s/%s_detail.html" % (model._meta.app_label, model._meta.object_name.lower())
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if template_name_field:
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template_name_list = [getattr(obj, template_name_field), template_name]
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t = template_loader.select_template(template_name_list)
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else:
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t = template_loader.get_template(template_name)
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c = RequestContext(request, {
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template_object_name: obj,
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}, context_processors)
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for key, value in extra_context.items():
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if callable(value):
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c[key] = value()
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else:
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c[key] = value
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response = HttpResponse(t.render(c), mimetype=mimetype)
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populate_xheaders(request, response, model, getattr(obj, obj._meta.pk.name))
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return response
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