]> git.openstreetmap.org Git - osqa.git/blob - forum/views/decorators.py
General cleanup. Moved many hardcoded stuff still left in the code to an admin option...
[osqa.git] / forum / views / decorators.py
1 from django.http import HttpResponse, HttpResponseRedirect\r
2 from django.utils import simplejson\r
3 from django.core.paginator import Paginator\r
4 from django.shortcuts import render_to_response\r
5 from django.template import RequestContext\r
6 from django.utils.translation import ungettext, ugettext as _\r
7 import logging\r
8 \r
9 def render(template=None, tab=None):\r
10     def decorator(func):\r
11         def decorated(request, *args, **kwargs):\r
12             context = func(request, *args, **kwargs)\r
13 \r
14             if tab is not None:\r
15                 context['tab'] = tab\r
16 \r
17             return render_to_response(context.pop('template', template), context, context_instance=RequestContext(request))\r
18         return decorated\r
19     return decorator\r
20 \r
21 def list(paginate, default_page_size):\r
22     def decorator(func):\r
23         def decorated(request, *args, **kwargs):\r
24             context = func(request, *args, **kwargs)\r
25 \r
26             pagesize = request.utils.page_size(default_page_size)\r
27             page = int(request.GET.get('page', 1))\r
28 \r
29             big_list = context[paginate]\r
30             paginator = Paginator(big_list, pagesize)\r
31 \r
32             page_obj = paginator.page(page)\r
33             context[paginate] = page_obj.object_list.lazy()\r
34 \r
35             base_path = context.get('base_path', None) or request.path\r
36             sort = request.utils.sort_method('')\r
37 \r
38             context["pagination_context"] = {\r
39                 'is_paginated' : True,\r
40                 'pages': paginator.num_pages,\r
41                 'page': page,\r
42                 'has_previous': page_obj.has_previous(),\r
43                 'has_next': page_obj.has_next(),\r
44                 'previous': page_obj.previous_page_number(),\r
45                 'next': page_obj.next_page_number(),\r
46                 'base_url' : "%s%ssort=%s&" % (base_path, ('?' in base_path) and '&' or '?', sort),\r
47                 'pagesize' : pagesize\r
48             }\r
49 \r
50             context['sort_context'] = {\r
51                 'base_url': "%s%ssort=" % (base_path, ('?' in base_path) and '&' or '?'),\r
52                 'current': sort,\r
53             }\r
54 \r
55             return context\r
56         return decorated\r
57     return decorator\r
58 \r
59 \r
60 class CommandException(Exception):\r
61     pass\r
62 \r
63 \r
64 def command(func):\r
65     def decorated(request, *args, **kwargs):\r
66         try:\r
67             response = func(request, *args, **kwargs)\r
68 \r
69             if isinstance(response, HttpResponse):\r
70                 return response\r
71 \r
72             response['success'] = True\r
73         except Exception, e:\r
74             #import sys, traceback\r
75             #traceback.print_exc(file=sys.stdout)\r
76 \r
77             if isinstance(e, CommandException):\r
78                 response = {\r
79                     'success': False,\r
80                     'error_message': str(e)\r
81                 }\r
82             else:\r
83                 logging.error("%s: %s" % (func.__name__, str(e)))\r
84                 response = {\r
85                     'success': False,\r
86                     'error_message': _("We're sorry, but an unknown error ocurred.<br />Please try again in a while.")\r
87                 }\r
88 \r
89         if request.is_ajax():\r
90             return HttpResponse(simplejson.dumps(response), mimetype="application/json")\r
91         else:\r
92             return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))\r
93 \r
94     return decorated