NDOJ/judge/utils/views.py
2021-07-22 22:54:48 -05:00

115 lines
3.8 KiB
Python

from django.shortcuts import render
from django.utils.decorators import method_decorator
from django.views.generic import FormView
from django.views.generic.detail import SingleObjectMixin
from judge.utils.diggpaginator import DiggPaginator
from django.utils.html import mark_safe
def class_view_decorator(function_decorator):
"""Convert a function based decorator into a class based decorator usable
on class based Views.
Can't subclass the `View` as it breaks inheritance (super in particular),
so we monkey-patch instead.
"""
def simple_decorator(View):
View.dispatch = method_decorator(function_decorator)(View.dispatch)
return View
return simple_decorator
def generic_message(request, title, message, status=None):
return render(request, 'generic-message.html', {
'message': message,
'title': title,
}, status=status)
def paginate_query_context(request):
query = request.GET.copy()
query.setlist('page', [])
query = query.urlencode()
if query:
return {'page_prefix': '%s?%s&page=' % (request.path, query),
'first_page_href': '%s?%s' % (request.path, query)}
else:
return {'page_prefix': '%s?page=' % request.path,
'first_page_href': request.path}
class TitleMixin(object):
title = '(untitled)'
content_title = None
def get_context_data(self, **kwargs):
context = super(TitleMixin, self).get_context_data(**kwargs)
context['title'] = self.get_title()
content_title = self.get_content_title()
if content_title is not None:
context['content_title'] = content_title
return context
def get_content_title(self):
return self.content_title
def get_title(self):
return self.title
class DiggPaginatorMixin(object):
def get_paginator(self, queryset, per_page, orphans=0,
allow_empty_first_page=True, **kwargs):
return DiggPaginator(queryset, per_page, body=6, padding=2,
orphans=orphans, allow_empty_first_page=allow_empty_first_page, **kwargs)
class QueryStringSortMixin(object):
all_sorts = None
default_sort = None
default_desc = ()
def get_default_sort_order(self, request):
return self.default_sort
def get(self, request, *args, **kwargs):
order = request.GET.get('order', '')
if not ((not order.startswith('-') or order.count('-') == 1) and (order.lstrip('-') in self.all_sorts)):
order = self.get_default_sort_order(request)
self.order = order
return super(QueryStringSortMixin, self).get(request, *args, **kwargs)
def get_sort_context(self):
query = self.request.GET.copy()
query.setlist('order', [])
query = query.urlencode()
sort_prefix = '%s?%s&order=' % (self.request.path, query) if query else '%s?order=' % self.request.path
current = self.order.lstrip('-')
links = {key: sort_prefix + ('-' if key in self.default_desc else '') + key for key in self.all_sorts}
links[current] = sort_prefix + ('' if self.order.startswith('-') else '-') + current
order = {key: '' for key in self.all_sorts}
order[current] = ' \u25BE' if self.order.startswith('-') else u' \u25B4'
return {'sort_links': links, 'sort_order': order}
def get_sort_paginate_context(self):
return paginate_query_context(self.request)
def short_circuit_middleware(view):
view.short_circuit_middleware = True
return view
class SingleObjectFormView(SingleObjectMixin, FormView):
def post(self, request, *args, **kwargs):
self.object = self.get_object()
return super().post(request, *args, **kwargs)
def get(self, request, *args, **kwargs):
self.object = self.get_object()
return super().get(request, *args, **kwargs)