author | Todd Larsen <tlarsen@google.com> |
Wed, 01 Oct 2008 06:03:53 +0000 | |
changeset 236 | d5302883f3ac |
parent 54 | 03e267d67478 |
child 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
54
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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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 QuerySetPaginator, 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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|
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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 = QuerySetPaginator(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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|
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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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102 |
|
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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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|
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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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116 |
if extra_context is None: extra_context = {} |
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117 |
model = queryset.model |
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118 |
if object_id: |
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119 |
queryset = queryset.filter(pk=object_id) |
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120 |
elif slug and slug_field: |
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121 |
queryset = queryset.filter(**{slug_field: slug}) |
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122 |
else: |
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123 |
raise AttributeError, "Generic detail view must be called with either an object_id or a slug/slug_field." |
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124 |
try: |
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125 |
obj = queryset.get() |
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126 |
except ObjectDoesNotExist: |
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127 |
raise Http404, "No %s found matching the query" % (model._meta.verbose_name) |
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128 |
if not template_name: |
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129 |
template_name = "%s/%s_detail.html" % (model._meta.app_label, model._meta.object_name.lower()) |
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130 |
if template_name_field: |
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131 |
template_name_list = [getattr(obj, template_name_field), template_name] |
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132 |
t = template_loader.select_template(template_name_list) |
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133 |
else: |
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134 |
t = template_loader.get_template(template_name) |
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135 |
c = RequestContext(request, { |
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136 |
template_object_name: obj, |
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137 |
}, context_processors) |
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138 |
for key, value in extra_context.items(): |
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139 |
if callable(value): |
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140 |
c[key] = value() |
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141 |
else: |
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142 |
c[key] = value |
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143 |
response = HttpResponse(t.render(c), mimetype=mimetype) |
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144 |
populate_xheaders(request, response, model, getattr(obj, obj._meta.pk.name)) |
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145 |
return response |