def get_paginator_items(items, paginate_by, page_number):
if not page_number:
page_number = 1
paginator = Paginator(items, paginate_by)
try:
page_number = int(page_number)
except ValueError:
raise Http404('Page can not be converted to an int.')
try:
items = paginator.page(page_number)
except InvalidPage as err:
raise Http404('Invalid page (%(page_number)s): %(message)s' % {
'page_number': page_number, 'message': str(err)})
return items
python类InvalidPage()的实例源码
def paginate_results(results, get_data, paginate_by=25):
paginator = Paginator(results, paginate_by)
page_number = get_data.get('page', 1)
try:
page = paginator.page(page_number)
except InvalidPage:
raise Http404('No such page!')
return page
def view_changes(request, username=None, revision_id=None, object_id=None):
"""Recent changes"""
boring_models = [LanguageListOrder, LanguageList, MeaningList]
boring_model_ids = [ContentType.objects.get_for_model(m).id for m in
boring_models]
def interesting_versions(self):
return self.version_set.exclude(content_type_id__in=boring_model_ids)
Revision.add_to_class("interesting_versions", interesting_versions)
if not username:
recent_changes = Revision.objects.all().order_by("-id")
else:
recent_changes = Revision.objects.filter(
user__username=username).order_by("-id")
paginator = Paginator(recent_changes, 50)
try: # Make sure page request is an int. If not, deliver first page.
page = int(request.GET.get('page', '1'))
except ValueError:
page = 1
try: # If page request is out of range, deliver last page of results.
changes = paginator.page(page)
except (EmptyPage, InvalidPage):
changes = paginator.page(paginator.num_pages)
userIds = set(Revision.objects.values_list("user", flat=True).distinct())
contributors = sorted([(User.objects.get(id=user_id),
Revision.objects.filter(user=user_id).count())
for user_id in userIds
if user_id is not None],
key=lambda x: -x[1])
return render_template(request, "view_changes.html",
{"changes": changes,
"contributors": contributors})
def make_result_list(self):
# Get search parameters from the query string.
self.base_queryset = self.queryset()
self.list_queryset = self.get_list_queryset()
self.ordering_field_columns = self.get_ordering_field_columns()
self.paginator = self.get_paginator()
# Get the number of objects, with admin filters applied.
self.result_count = self.paginator.count
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization: Check to see whether any filters were
# given. If not, use paginator.hits to calculate the number of objects,
# because we've already done paginator.hits and the value is cached.
if not self.list_queryset.query.where:
self.full_result_count = self.result_count
else:
self.full_result_count = self.base_queryset.count()
self.can_show_all = self.result_count <= self.list_max_show_all
self.multi_page = self.result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and self.can_show_all) or not self.multi_page:
self.result_list = self.list_queryset._clone()
else:
try:
self.result_list = self.paginator.page(
self.page_num + 1).object_list
except InvalidPage:
if ERROR_FLAG in self.request.GET.keys():
return SimpleTemplateResponse('xadmin/views/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1')
self.has_more = self.result_count > (
self.list_per_page * self.page_num + len(self.result_list))
def get_results(self, request):
paginator = self.model_admin.get_paginator(request, self.queryset, self.list_per_page)
# Get the number of objects, with admin filters applied.
result_count = paginator.count
# Get the total number of objects, with no admin filters applied.
if self.model_admin.show_full_result_count:
full_result_count = self.root_queryset.count()
else:
full_result_count = None
can_show_all = result_count <= self.list_max_show_all
multi_page = result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and can_show_all) or not multi_page:
result_list = self.queryset._clone()
else:
try:
result_list = paginator.page(self.page_num + 1).object_list
except InvalidPage:
raise IncorrectLookupParameters
self.result_count = result_count
self.show_full_result_count = self.model_admin.show_full_result_count
# Admin actions are shown if there is at least one entry
# or if entries are not counted because show_full_result_count is disabled
self.show_admin_actions = not self.show_full_result_count or bool(full_result_count)
self.full_result_count = full_result_count
self.result_list = result_list
self.can_show_all = can_show_all
self.multi_page = multi_page
self.paginator = paginator
def make_result_list(self):
# Get search parameters from the query string.
self.base_queryset = self.queryset()
self.list_queryset = self.get_list_queryset()
self.ordering_field_columns = self.get_ordering_field_columns()
self.paginator = self.get_paginator()
# Get the number of objects, with admin filters applied.
self.result_count = self.paginator.count
self.can_show_all = self.result_count <= self.list_max_show_all
self.multi_page = self.result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and self.can_show_all) or not self.multi_page:
self.result_list = self.list_queryset._clone()
else:
try:
self.result_list = self.paginator.page(
self.page_num + 1).object_list
except InvalidPage:
if ERROR_FLAG in self.request.GET.keys():
return SimpleTemplateResponse('xadmin/views/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1')
self.has_more = self.result_count > (
self.list_per_page * self.page_num + len(self.result_list))
def make_result_list(self):
# Get search parameters from the query string.
self.base_queryset = self.queryset()
self.list_queryset = self.get_list_queryset()
self.ordering_field_columns = self.get_ordering_field_columns()
self.paginator = self.get_paginator()
# Get the number of objects, with admin filters applied.
self.result_count = self.paginator.count
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization: Check to see whether any filters were
# given. If not, use paginator.hits to calculate the number of objects,
# because we've already done paginator.hits and the value is cached.
if not self.list_queryset.query.where:
self.full_result_count = self.result_count
else:
self.full_result_count = self.base_queryset.count()
self.can_show_all = self.result_count <= self.list_max_show_all
self.multi_page = self.result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and self.can_show_all) or not self.multi_page:
self.result_list = self.list_queryset._clone()
else:
try:
self.result_list = self.paginator.page(
self.page_num + 1).object_list
except InvalidPage:
if ERROR_FLAG in self.request.GET.keys():
return SimpleTemplateResponse('xadmin/views/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1')
self.has_more = self.result_count > (
self.list_per_page * self.page_num + len(self.result_list))
def make_result_list(self):
# Get search parameters from the query string.
self.base_queryset = self.queryset()
self.list_queryset = self.get_list_queryset()
self.ordering_field_columns = self.get_ordering_field_columns()
self.paginator = self.get_paginator()
# Get the number of objects, with admin filters applied.
self.result_count = self.paginator.count
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization: Check to see whether any filters were
# given. If not, use paginator.hits to calculate the number of objects,
# because we've already done paginator.hits and the value is cached.
if not self.list_queryset.query.where:
self.full_result_count = self.result_count
else:
self.full_result_count = self.base_queryset.count()
self.can_show_all = self.result_count <= self.list_max_show_all
self.multi_page = self.result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and self.can_show_all) or not self.multi_page:
self.result_list = self.list_queryset._clone()
else:
try:
self.result_list = self.paginator.page(
self.page_num + 1).object_list
except InvalidPage:
if ERROR_FLAG in self.request.GET.keys():
return SimpleTemplateResponse('xadmin/views/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1')
self.has_more = self.result_count > (
self.list_per_page * self.page_num + len(self.result_list))
def make_result_list(self):
# Get search parameters from the query string.
self.base_queryset = self.queryset()
self.list_queryset = self.get_list_queryset()
self.ordering_field_columns = self.get_ordering_field_columns()
self.paginator = self.get_paginator()
# Get the number of objects, with admin filters applied.
self.result_count = self.paginator.count
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization: Check to see whether any filters were
# given. If not, use paginator.hits to calculate the number of objects,
# because we've already done paginator.hits and the value is cached.
if not self.list_queryset.query.where:
self.full_result_count = self.result_count
else:
self.full_result_count = self.base_queryset.count()
self.can_show_all = self.result_count <= self.list_max_show_all
self.multi_page = self.result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and self.can_show_all) or not self.multi_page:
self.result_list = self.list_queryset._clone()
else:
try:
self.result_list = self.paginator.page(
self.page_num + 1).object_list
except InvalidPage:
if ERROR_FLAG in self.request.GET.keys():
return SimpleTemplateResponse('xadmin/views/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1')
self.has_more = self.result_count > (
self.list_per_page * self.page_num + len(self.result_list))
def paginate_queryset(self, queryset, request, view=None):
"""
Paginate a queryset if required, either returning a
page object, or `None` if pagination is not configured for this view.
"""
page_size = self.get_page_size(request)
if not page_size:
return None
paginator = self.django_paginator_class(queryset, page_size)
page_number = request.query_params.get(self.page_query_param, 1)
if page_number in self.last_page_strings:
page_number = paginator.num_pages
try:
self.page = paginator.page(page_number)
except InvalidPage as exc:
msg = self.invalid_page_message.format(
page_number=page_number, message=six.text_type(exc)
)
raise NotFound(msg)
if paginator.num_pages > 1 and self.template is not None:
# The browsable API should display pagination controls.
self.display_page_controls = True
self.request = request
return list(self.page)
def paginate_queryset(self, queryset, page_size):
"""
Paginate the queryset, if needed.
This is EXACTLY the same as the standard ListView.paginate_queryset()
except for this line:
page = paginator.page(page_number, softlimit=True)
Because we want to use the DiggPaginator's softlimit option.
So that if you're viewing a page of, say, Flickr photos, and you switch
from viewing by Uploaded Time to viewing by Taken Time, the new
ordering might have fewer pages. In that case we want to see the final
page, not a 404. The softlimit does that, but I can't see how to use
it without copying all of this...
"""
paginator = self.get_paginator(
queryset,
page_size,
orphans = self.get_paginate_orphans(),
allow_empty_first_page = self.get_allow_empty(),
body = self.paginator_body,
margin = self.paginator_margin,
padding = self.paginator_padding,
tail = self.paginator_tail,
)
page_kwarg = self.page_kwarg
page = self.kwargs.get(page_kwarg) or self.request.GET.get(page_kwarg) or 1
try:
page_number = int(page)
except ValueError:
if page == 'last':
page_number = paginator.num_pages
else:
raise Http404(_("Page is not 'last', nor can it be converted to an int."))
try:
page = paginator.page(page_number, softlimit=False)
return (paginator, page, page.object_list, page.has_other_pages())
except InvalidPage as e:
raise Http404(_('Invalid page (%(page_number)s): %(message)s') % {
'page_number': page_number,
'message': str(e)
})
def pages(post_objects, request):
"""
page public function , return page's object tuple
????????????????
"""
paginator = Paginator(post_objects, 20)
try:
current_page = int(request.GET.get('page', '1'))
except ValueError:
current_page = 1
page_range = page_list_return(len(paginator.page_range), current_page)
try:
page_objects = paginator.page(current_page)
except (EmptyPage, InvalidPage):
page_objects = paginator.page(paginator.num_pages)
if current_page >= 5:
show_first = 1
else:
show_first = 0
if current_page <= (len(paginator.page_range) - 3):
show_end = 1
else:
show_end = 0
# ????? ???? ????? ????? ?????????????????????
return post_objects, paginator, page_objects, page_range, current_page, show_first, show_end
def get_results(self, request):
paginator = self.model_admin.get_paginator(request, self.queryset, self.list_per_page)
# Get the number of objects, with admin filters applied.
result_count = paginator.count
# Get the total number of objects, with no admin filters applied.
if self.model_admin.show_full_result_count:
full_result_count = self.root_queryset.count()
else:
full_result_count = None
can_show_all = result_count <= self.list_max_show_all
multi_page = result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and can_show_all) or not multi_page:
result_list = self.queryset._clone()
else:
try:
result_list = paginator.page(self.page_num + 1).object_list
except InvalidPage:
raise IncorrectLookupParameters
self.result_count = result_count
self.show_full_result_count = self.model_admin.show_full_result_count
# Admin actions are shown if there is at least one entry
# or if entries are not counted because show_full_result_count is disabled
self.show_admin_actions = not self.show_full_result_count or bool(full_result_count)
self.full_result_count = full_result_count
self.result_list = result_list
self.can_show_all = can_show_all
self.multi_page = multi_page
self.paginator = paginator
def get_results(self, request):
paginator = self.model_admin.get_paginator(request, self.queryset, self.list_per_page)
# Get the number of objects, with admin filters applied.
result_count = paginator.count
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization:
# full_result_count is equal to paginator.count if no filters
# were applied
if self.model_admin.show_full_result_count:
if self.get_filters_params() or self.params.get(SEARCH_VAR):
full_result_count = self.root_queryset.count()
else:
full_result_count = result_count
else:
full_result_count = None
can_show_all = result_count <= self.list_max_show_all
multi_page = result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and can_show_all) or not multi_page:
result_list = self.queryset._clone()
else:
try:
result_list = paginator.page(self.page_num + 1).object_list
except InvalidPage:
raise IncorrectLookupParameters
self.result_count = result_count
self.show_full_result_count = self.model_admin.show_full_result_count
# Admin actions are shown if there is at least one entry
# or if entries are not counted because show_full_result_count is disabled
self.show_admin_actions = not self.show_full_result_count or bool(full_result_count)
self.full_result_count = full_result_count
self.result_list = result_list
self.can_show_all = can_show_all
self.multi_page = multi_page
self.paginator = paginator
def search(request):
query = request.GET.get('q','')
page_size = 20
after_range_num = 5
before_range_num = 4
if query:
qset = (
Q(name__icontains=query) |
Q(city__icontains=query) |
Q(time__icontains=query) |
Q(mile__icontains=query) |
Q(price__icontains=query)
)
result = GuaziCar.objects.filter(qset).distinct()
paginator = Paginator(result, page_size)
try:
page = int(request.GET.get('page', '1'))
if page < 1:
page = 1
except ValueError:
page = 1
try:
contacts = paginator.page(page)
except (EmptyPage,InvalidPage,PageNotAnInteger):
contacts = paginator.page(paginator.num_pages)
if page >= after_range_num:
page_range = list(paginator.page_range)[page-after_range_num:page+before_range_num]
else:
page_range = list(paginator.page_range)[0:int(page)+before_range_num]
return render(request, 'search.html', {'result': contacts, 'query': query,
'page_range': page_range })
else:
result = []
return render(request, 'search.html', {})
def make_result_list(self):
# Get search parameters from the query string.
self.base_queryset = self.queryset()
self.list_queryset = self.get_list_queryset()
self.ordering_field_columns = self.get_ordering_field_columns()
self.paginator = self.get_paginator()
# Get the number of objects, with admin filters applied.
self.result_count = self.paginator.count
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization: Check to see whether any filters were
# given. If not, use paginator.hits to calculate the number of objects,
# because we've already done paginator.hits and the value is cached.
if not self.list_queryset.query.where:
self.full_result_count = self.result_count
else:
self.full_result_count = self.base_queryset.count()
self.can_show_all = self.result_count <= self.list_max_show_all
self.multi_page = self.result_count > self.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and self.can_show_all) or not self.multi_page:
self.result_list = self.list_queryset._clone()
else:
try:
self.result_list = self.paginator.page(
self.page_num + 1).object_list
except InvalidPage:
if ERROR_FLAG in self.request.GET.keys():
return SimpleTemplateResponse('xadmin/views/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(self.request.path + '?' + ERROR_FLAG + '=1')
self.has_more = self.result_count > (
self.list_per_page * self.page_num + len(self.result_list))
def meeting_list(request, meetings, title=None):
if not title:
title = _('Meetings')
paginator = Paginator(meetings, 12)
try:
meetings = paginator.page(int(request.GET.get('page', '1')))
except (EmptyPage, InvalidPage):
meetings = paginator.page(1)
return render(request, 'meetings/list.html', {
'meetings': meetings,
'title': title,
})
def invoice_list(request):
invoices = Invoice.objects.all().order_by('-created_at')
paginator = Paginator(invoices, 25)
try:
invoices = paginator.page(int(request.GET.get('page', '1')))
except (EmptyPage, InvalidPage):
invoices = paginator.page(1)
return render(request, 'billing/invoice_list.html', {
'invoices': invoices,
})
def checklist_payment_list(request):
payments = ChecklistPayment.objects.all().order_by('-created_at')
paginator = Paginator(payments, 25)
try:
payments = paginator.page(int(request.GET.get('page', '1')))
except (EmptyPage, InvalidPage):
payments = paginator.page(1)
return render(request, 'billing/checklist_payment_list.html', {
'payments': payments,
})
def paginate_queryset(self, queryset, request, view=None):
"""
Paginate a queryset if required, either returning a
page object, or `None` if pagination is not configured for this view.
"""
page_size = self.get_page_size(request)
if not page_size:
return None
paginator = self.django_paginator_class(queryset, page_size)
page_number = request.query_params.get(self.page_query_param, 1)
if page_number in self.last_page_strings:
page_number = paginator.num_pages
try:
self.page = paginator.page(page_number)
except InvalidPage as exc:
msg = self.invalid_page_message.format(
page_number=page_number, message=six.text_type(exc)
)
raise NotFound(msg)
if paginator.num_pages > 1 and self.template is not None:
# The browsable API should display pagination controls.
self.display_page_controls = True
self.request = request
return list(self.page)
