def root(request):
'''
Render catalog root page.
Templates:
``<app_label>/catalog_root.html``
``catalog/catalog_root.html``
Parameter ``app_label`` looked up in ``CATALOG_MDOELS`` setting in settings.py
Context taken from ``object_detail`` method from ``django.views.generic.list_detail``:
object_list:
list of objects
is_paginated:
are the results paginated?
results_per_page:
number of objects per page (if paginated)
has_next:
is there a next page?
has_previous:
is there a prev page?
page:
the current page
next:
the next page
previous:
the previous page
pages:
number of pages, total
hits:
number of objects, total
last_on_page:
the result number of the last of object in the
object_list (1-indexed)
first_on_page:
the result number of the first object in the
object_list (1-indexed)
page_range:
A list of the page numbers (1-indexed).
'''
templates_list = ['%s/catalog_root.html' % app_name for app_name in get_data_appnames()]
templates_list.append('catalog/root.html')
t = loader.select_template(templates_list)
extra_context = {
'template_name': t.name,
}
return object_list(request, TreeItem.objects.published().filter(parent=None), **extra_context)
def render_tag(self, context, instance, children_type, varname):
# if instance is not None:
if instance == 'root':
treeitem = None
elif instance == 'guess':
# try to guess
treeitem = get_treeitem_from_context(context)
elif instance is None:
treeitem = None
else:
if isinstance(instance, TreeItem):
treeitem = instance
else:
try:
treeitem = instance.tree.get()
except AttributeError:
raise TemplateSyntaxError('Instance argument must have `tree` attribute')
if children_type:
ModelClass = None
for model_cls in connected_models():
if model_cls._meta.module_name == children_type:
ModelClass = model_cls
if ModelClass is not None:
model_filter = get_q_filters()[ModelClass]
if model_filter is not None:
queryset = ModelClass.objects.filter(model_filter)
else:
queryset = ModelClass.objects.all()
allowed_ids = TreeItem.objects.published().filter(parent=treeitem,
content_type__model=children_type).values_list('object_id', flat=True)
queryset = queryset.filter(id__in=allowed_ids)
else:
# Empty
queryset = []
else:
queryset = TreeItem.objects.published().filter(parent=treeitem)
if varname:
context[varname] = queryset
return u''
else:
self.templates[0:0] = ['%s/children_tag.html' % app_name for app_name in get_data_appnames()]
context['children_queryset'] = children_qs
return render_to_string(self.templates, context)