146 lines
5.3 KiB
Python
146 lines
5.3 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 Paginator, 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 = Paginator(queryset, paginate_by, allow_empty_first_page=allow_empty)
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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.num_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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page_obj = paginator.page(page_number)
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except InvalidPage:
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raise Http404
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c = RequestContext(request, {
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'%s_list' % template_object_name: page_obj.object_list,
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'paginator': paginator,
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'page_obj': page_obj,
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# Legacy template context stuff. New templates should use page_obj
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# to access this instead.
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'is_paginated': page_obj.has_other_pages(),
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'results_per_page': paginator.per_page,
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'has_next': page_obj.has_next(),
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'has_previous': page_obj.has_previous(),
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'page': page_obj.number,
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'next': page_obj.next_page_number(),
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'previous': page_obj.previous_page_number(),
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'first_on_page': page_obj.start_index(),
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'last_on_page': page_obj.end_index(),
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'pages': paginator.num_pages,
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'hits': paginator.count,
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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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'paginator': None,
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'page_obj': None,
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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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