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annotate gpp/comments/views.py @ 197:2baadae33f2e

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Got autocomplete working for the member search. Updated django and ran into a bug where url tags with comma separated kwargs starting consuming tons of CPU throughput. The work-around is to cut over to using spaces between arguments. This is now allowed to be consistent with other tags. Did some query optimization for the news app.
author Brian Neal <bgneal@gmail.com>
date Sat, 10 Apr 2010 04:32:24 +0000
parents d203a4a986d2
children 8c1832b9d815
rev   line source
gremmie@1 1 """
gremmie@1 2 Views for the comments application.
gremmie@1 3 """
gremmie@1 4 from django.contrib.auth.decorators import login_required
gremmie@1 5 from django.core.exceptions import ObjectDoesNotExist
gremmie@1 6 from django.http import HttpResponse
gremmie@1 7 from django.http import HttpResponseRedirect
gremmie@1 8 from django.http import HttpResponseBadRequest
gremmie@1 9 from django.http import HttpResponseForbidden
gremmie@1 10 from django.db.models import get_model
gremmie@1 11 from django.shortcuts import render_to_response
gremmie@1 12 from django.template import RequestContext
gremmie@1 13 from django.utils.html import escape
gremmie@1 14 from django.views.decorators.http import require_POST
gremmie@1 15
gremmie@1 16 from core.functions import email_admins
bgneal@136 17 from core.markup import site_markup
gremmie@1 18 from comments.forms import CommentForm
gremmie@1 19 from comments.models import Comment
gremmie@1 20 from comments.models import CommentFlag
gremmie@1 21
gremmie@1 22 @login_required
gremmie@1 23 @require_POST
gremmie@1 24 def post_comment(request):
gremmie@1 25 """
gremmie@1 26 This function handles the posting of comments. If successful, returns
gremmie@1 27 the comment text as the response. This function is mean't to be the target
gremmie@1 28 of an AJAX post.
gremmie@1 29 """
gremmie@1 30 # Look up the object we're trying to comment about
gremmie@1 31 ctype = request.POST.get('content_type', None)
gremmie@1 32 object_pk = request.POST.get('object_pk', None)
gremmie@1 33 if ctype is None or object_pk is None:
gremmie@1 34 return HttpResponseBadRequest('Missing content_type or object_pk field.')
gremmie@1 35
gremmie@1 36 try:
gremmie@1 37 model = get_model(*ctype.split('.', 1))
gremmie@1 38 target = model.objects.get(pk=object_pk)
gremmie@1 39 except TypeError:
gremmie@1 40 return HttpResponseBadRequest(
gremmie@1 41 "Invalid content_type value: %r" % escape(ctype))
gremmie@1 42 except AttributeError:
gremmie@1 43 return HttpResponseBadRequest(
gremmie@1 44 "The given content-type %r does not resolve to a valid model." % \
gremmie@1 45 escape(ctype))
gremmie@1 46 except ObjectDoesNotExist:
gremmie@1 47 return HttpResponseBadRequest(
gremmie@1 48 "No object matching content-type %r and object PK %r exists." % \
gremmie@1 49 (escape(ctype), escape(object_pk)))
gremmie@1 50
gremmie@1 51 # Can we comment on the target object?
gremmie@1 52 if hasattr(target, 'can_comment_on'):
gremmie@1 53 if callable(target.can_comment_on):
gremmie@1 54 can_comment_on = target.can_comment_on()
gremmie@1 55 else:
gremmie@1 56 can_comment_on = target.can_comment_on
gremmie@1 57 else:
gremmie@1 58 can_comment_on = True
gremmie@1 59
gremmie@1 60 if not can_comment_on:
gremmie@1 61 return HttpResponseForbidden('Cannot comment on this item.')
gremmie@1 62
gremmie@1 63 # Check form validity
gremmie@1 64
gremmie@1 65 form = CommentForm(target, request.POST)
gremmie@1 66 if not form.is_valid():
gremmie@1 67 return HttpResponseBadRequest('Invalid comment; missing parameters?')
gremmie@1 68
gremmie@1 69 # else, create and save the comment
gremmie@1 70
gremmie@1 71 comment = form.get_comment_object(request.user, request.META.get("REMOTE_ADDR", None))
gremmie@1 72 comment.save()
gremmie@1 73
gremmie@1 74 # return the rendered comment
gremmie@1 75 return render_to_response('comments/comment.html', {
gremmie@1 76 'comment': comment,
gremmie@1 77 },
gremmie@1 78 context_instance = RequestContext(request))
gremmie@1 79
gremmie@1 80
gremmie@1 81 @require_POST
gremmie@1 82 def flag_comment(request):
gremmie@1 83 """
gremmie@1 84 This function handles the flagging of comments by users. This function should
gremmie@1 85 be the target of an AJAX post.
gremmie@1 86 """
gremmie@1 87 if not request.user.is_authenticated():
gremmie@1 88 return HttpResponse('Please login or register to flag a comment.')
gremmie@1 89
gremmie@1 90 id = request.POST.get('id', None)
gremmie@1 91 if id is None:
gremmie@1 92 return HttpResponseBadRequest('No id')
gremmie@1 93
gremmie@1 94 try:
gremmie@1 95 comment = Comment.objects.get(pk=id)
gremmie@1 96 except Comment.DoesNotExist:
gremmie@1 97 return HttpResponseBadRequest('No comment with id %s' % id)
gremmie@1 98
gremmie@1 99 flag = CommentFlag(user=request.user, comment=comment)
gremmie@1 100 flag.save()
gremmie@1 101 email_admins('A Comment Has Been Flagged', """Hello,
gremmie@1 102
gremmie@1 103 A user has flagged a comment for review.
gremmie@1 104 """)
gremmie@1 105 return HttpResponse('The comment was flagged. A moderator will review the comment shortly. ' \
gremmie@1 106 'Thanks for helping to improve the discussions on this site.')
gremmie@1 107
gremmie@1 108
gremmie@1 109 @require_POST
gremmie@1 110 def markdown_preview(request):
gremmie@1 111 """
gremmie@1 112 This function should be the target of an AJAX POST. It takes the 'data' parameter
gremmie@1 113 from the POST parameters and returns a rendered HTML page from the data, which
gremmie@1 114 is assumed to be in markdown format. The HTML page is suitable for the preview
gremmie@1 115 function for a javascript editor such as markItUp.
gremmie@1 116 """
gremmie@1 117 if not request.user.is_authenticated():
gremmie@1 118 return HttpResponseForbidden('This service is only available to logged in users.')
gremmie@1 119
gremmie@1 120 data = request.POST.get('data', None)
gremmie@1 121 if data is None:
gremmie@1 122 return HttpResponseBadRequest('No data')
gremmie@1 123
gremmie@1 124 return render_to_response('comments/markdown_preview.html', {
bgneal@136 125 'data': site_markup(data),
gremmie@1 126 },
gremmie@1 127 context_instance = RequestContext(request))