def test_paginated_query(self):
self.values = [
X(key_name='c1', val='bum bam bear', idx=1),
X(key_name='c2', val='bum bam bear'),
X(key_name='a1', val='bear and bing', idx=2),
X(key_name='b1', val='beach sand bear', idx=1),
X(key_name='b2', val='beach sand bear'),
]
db.put(self.values)
run_tasks()
items, prev, next = paginated_query(X, count=2)
self.assertEqual([item.key().name() for item in items],
['a1', 'b1'])
self.assertEqual(prev, None)
items, prev, next = paginated_query(X, count=2, bookmark=next)
self.assertEqual([item.key().name() for item in items],
['b2', 'c1'])
items, prev, next = paginated_query(X, count=2, bookmark=prev)
self.assertEqual([item.key().name() for item in items],
['a1', 'b1'])
# Now, test unidirectional
items, prev, next = paginated_query(X, count=2, bookmark=next,
unidirectional=True)
self.assertEqual([item.key().name() for item in items],
['b2', 'c1'])
self.assertEqual(prev, None)
def key_paginated_object_list(request, model, filters=(), order=(),
ignore_params=(), converter=None,
search_title=default_title, paginate_by=10,
search_form_class=None, template_name=None, template_object_name=None,
extra_context={}):
"""
Browse entities using key-based pagination.
"""
if not search_form_class:
search_form = None
else:
search_form = search_form_class(request.GET)
search_form.is_valid()
bookmark, original_base_url, data = _prepare_params(request, ignore_params)
items, prev, next = paginated_query(model, filters=filters, order=order,
count=paginate_by, bookmark=bookmark)
if not template_object_name:
template_object_name = model._meta.object_name.lower()
data.update({
template_object_name + '_list': items,
'template_object_name': template_object_name,
'has_previous': bool(prev),
'previous': prev,
'has_next': bool(next),
'next': next,
'page_range': (),
'show_key_pagenav': True,
'search_form': search_form,
'search_title': search_title,
'query': '',
'search__converter': converter,
})
if not items and not prev and not next:
data['force_results_count'] = True
if 'results_count_format' not in extra_context:
data['results_count_format'] = default_results_format
for key, value in extra_context.items():
if callable(value):
data[key] = value()
else:
data[key] = value
if not template_name:
name_data = (model._meta.app_label, model._meta.object_name.lower())
template_name = ('%s/%s_paginated.html' % name_data,
'%s/%s_search.html' % name_data,
'search/search.html')
return render_to_response(request, template_name, data)
