forum/views/decorators.py

   1 from django.http import HttpResponse, HttpResponseRedirect, Http404\r
   2 from django.utils import simplejson\r
   3 from django.core.paginator import Paginator, EmptyPage\r
   4 from django.shortcuts import render_to_response\r
   5 from django.core.urlresolvers import reverse\r
   6 from django.template import RequestContext\r
   7 from django.utils.translation import ungettext, ugettext as _\r
   8 from forum.modules import ui, decorate\r
   9 import logging\r
  10 \r
  11 def login_required(func, request, *args, **kwargs):\r
  12     if not request.user.is_authenticated():\r
  13         return HttpResponseRedirect(reverse('auth_signin'))\r
  14     else:\r
  15         return func(request, *args, **kwargs)\r
  16 \r
  17 def render(template=None, tab=None, tab_title='', weight=500, tabbed=True):\r
  18     def decorator(func):        \r
  19         def decorated(context, request, *args, **kwargs):\r
  20             if isinstance(context, HttpResponse):\r
  21                 return context\r
  22 \r
  23             if tab is not None:\r
  24                 context['tab'] = tab\r
  25 \r
  26             return render_to_response(context.pop('template', template), context,\r
  27                                       context_instance=RequestContext(request))\r
  28 \r
  29         if tabbed and tab and tab_title:\r
  30             ui.register(ui.PAGE_TOP_TABS,\r
  31                         ui.PageTab(tab, tab_title, lambda: reverse(func.__name__), weight=weight))\r
  32             \r
  33         return decorate.result.withfn(decorated, needs_params=True)(func)\r
  34 \r
  35     return decorator\r
  36 \r
  37 class CommandException(Exception):\r
  38     pass\r
  39 \r
  40 class RefreshPageCommand(HttpResponse):\r
  41     def __init__(self):\r
  42         super(RefreshPageCommand, self).__init__(\r
  43                 content=simplejson.dumps({'commands': {'refresh_page': []}, 'success': True}),\r
  44                 mimetype="application/json")\r
  45 \r
  46 def command(func, request, *args, **kwargs):\r
  47     try:\r
  48         response = func(request, *args, **kwargs)\r
  49 \r
  50         if isinstance(response, HttpResponse):\r
  51             return response\r
  52 \r
  53         response['success'] = True\r
  54     except Exception, e:\r
  55         import traceback\r
  56         #traceback.print_exc()\r
  57 \r
  58         if isinstance(e, CommandException):\r
  59             response = {\r
  60             'success': False,\r
  61             'error_message': e.message\r
  62             }\r
  63         else:\r
  64             logging.error("%s: %s" % (func.__name__, str(e)))\r
  65             logging.error(traceback.format_exc())\r
  66             response = {\r
  67             'success': False,\r
  68             'error_message': _("We're sorry, but an unknown error ocurred.<br />Please try again in a while.")\r
  69             }\r
  70 \r
  71     if request.is_ajax():\r
  72         return HttpResponse(simplejson.dumps(response), mimetype="application/json")\r
  73     else:\r
  74         return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))\r
  75 \r