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"""
A few bits of helper functions for comment views.
"""
import textwrap
from urllib.parse import urlencode
from django.http import HttpResponseRedirect
from django.shortcuts import render, resolve_url
from django.core.exceptions import ObjectDoesNotExist
from ..compat import url_has_allowed_host_and_scheme
import django_comments
def next_redirect(request, fallback, **get_kwargs):
"""
Handle the "where should I go next?" part of comment views.
The next value could be a
``?next=...`` GET arg or the URL of a given view (``fallback``). See
the view modules for examples.
Returns an ``HttpResponseRedirect``.
"""
next = request.POST.get('next')
if not url_has_allowed_host_and_scheme(url=next, allowed_hosts={request.get_host()}):
next = resolve_url(fallback)
if get_kwargs:
if '#' in next:
tmp = next.rsplit('#', 1)
next = tmp[0]
anchor = '#' + tmp[1]
else:
anchor = ''
joiner = ('?' in next) and '&' or '?'
next += joiner + urlencode(get_kwargs) + anchor
return HttpResponseRedirect(next)
def confirmation_view(template, doc="Display a confirmation view."):
"""
Confirmation view generator for the "comment was
posted/flagged/deleted/approved" views.
"""
def confirmed(request):
comment = None
if 'c' in request.GET:
try:
comment = django_comments.get_model().objects.get(pk=request.GET['c'])
except (ObjectDoesNotExist, ValueError):
pass
return render(request, template, {'comment': comment})
confirmed.__doc__ = textwrap.dedent("""\
%s
Templates: :template:`%s``
Context:
comment
The posted comment
""" % (doc, template)
)
return confirmed
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