1
from django.contrib.comments.models import Comment, FreeComment
2
from django.contrib.comments.models import PHOTOS_REQUIRED, PHOTOS_OPTIONAL, RATINGS_REQUIRED, RATINGS_OPTIONAL, IS_PUBLIC
3
from django.contrib.comments.models import MIN_PHOTO_DIMENSION, MAX_PHOTO_DIMENSION
4
from django import template
5
from django.template import loader
6
from django.core.exceptions import ObjectDoesNotExist
7
from django.contrib.contenttypes.models import ContentType
8
from django.utils.encoding import smart_str
11
register = template.Library()
13
COMMENT_FORM = 'comments/form.html'
14
FREE_COMMENT_FORM = 'comments/freeform.html'
16
class CommentFormNode(template.Node):
17
def __init__(self, content_type, obj_id_lookup_var, obj_id, free,
18
photos_optional=False, photos_required=False, photo_options='',
19
ratings_optional=False, ratings_required=False, rating_options='',
21
self.content_type = content_type
22
if obj_id_lookup_var is not None:
23
obj_id_lookup_var = template.Variable(obj_id_lookup_var)
24
self.obj_id_lookup_var, self.obj_id, self.free = obj_id_lookup_var, obj_id, free
25
self.photos_optional, self.photos_required = photos_optional, photos_required
26
self.ratings_optional, self.ratings_required = ratings_optional, ratings_required
27
self.photo_options, self.rating_options = photo_options, rating_options
28
self.is_public = is_public
30
def render(self, context):
31
from django.conf import settings
32
from django.utils.text import normalize_newlines
35
if self.obj_id_lookup_var is not None:
37
self.obj_id = self.obj_id_lookup_var.resolve(context)
38
except template.VariableDoesNotExist:
40
# Validate that this object ID is valid for this content-type.
41
# We only have to do this validation if obj_id_lookup_var is provided,
42
# because do_comment_form() validates hard-coded object IDs.
44
self.content_type.get_object_for_this_type(pk=self.obj_id)
45
except ObjectDoesNotExist:
46
context['display_form'] = False
48
context['display_form'] = True
50
context['display_form'] = True
51
context['target'] = '%s:%s' % (self.content_type.id, self.obj_id)
53
for var, abbr in (('photos_required', PHOTOS_REQUIRED),
54
('photos_optional', PHOTOS_OPTIONAL),
55
('ratings_required', RATINGS_REQUIRED),
56
('ratings_optional', RATINGS_OPTIONAL),
57
('is_public', IS_PUBLIC)):
58
context[var] = getattr(self, var)
59
if getattr(self, var):
61
context['options'] = ','.join(options)
63
context['hash'] = Comment.objects.get_security_hash(context['options'], '', '', context['target'])
64
default_form = loader.get_template(FREE_COMMENT_FORM)
66
context['photo_options'] = self.photo_options
67
context['rating_options'] = normalize_newlines(base64.encodestring(self.rating_options).strip())
68
if self.rating_options:
69
context['rating_range'], context['rating_choices'] = Comment.objects.get_rating_options(self.rating_options)
70
context['hash'] = Comment.objects.get_security_hash(context['options'], context['photo_options'], context['rating_options'], context['target'])
71
context['logout_url'] = settings.LOGOUT_URL
72
default_form = loader.get_template(COMMENT_FORM)
73
output = default_form.render(context)
77
class CommentCountNode(template.Node):
78
def __init__(self, package, module, context_var_name, obj_id, var_name, free):
79
self.package, self.module = package, module
80
if context_var_name is not None:
81
context_var_name = template.Variable(context_var_name)
82
self.context_var_name, self.obj_id = context_var_name, obj_id
83
self.var_name, self.free = var_name, free
85
def render(self, context):
86
from django.conf import settings
87
manager = self.free and FreeComment.objects or Comment.objects
88
if self.context_var_name is not None:
89
self.obj_id = self.context_var_name.resolve(context)
90
comment_count = manager.filter(object_id__exact=self.obj_id,
91
content_type__app_label__exact=self.package,
92
content_type__model__exact=self.module, site__id__exact=settings.SITE_ID).count()
93
context[self.var_name] = comment_count
96
class CommentListNode(template.Node):
97
def __init__(self, package, module, context_var_name, obj_id, var_name, free, ordering, extra_kwargs=None):
98
self.package, self.module = package, module
99
if context_var_name is not None:
100
context_var_name = template.Variable(context_var_name)
101
self.context_var_name, self.obj_id = context_var_name, obj_id
102
self.var_name, self.free = var_name, free
103
self.ordering = ordering
104
self.extra_kwargs = extra_kwargs or {}
106
def render(self, context):
107
from django.conf import settings
108
get_list_function = self.free and FreeComment.objects.filter or Comment.objects.get_list_with_karma
109
if self.context_var_name is not None:
111
self.obj_id = self.context_var_name.resolve(context)
112
except template.VariableDoesNotExist:
115
'object_id__exact': self.obj_id,
116
'content_type__app_label__exact': self.package,
117
'content_type__model__exact': self.module,
118
'site__id__exact': settings.SITE_ID,
120
kwargs.update(self.extra_kwargs)
121
comment_list = get_list_function(**kwargs).order_by(self.ordering + 'submit_date').select_related()
122
if not self.free and settings.COMMENTS_BANNED_USERS_GROUP:
123
comment_list = comment_list.extra(select={'is_hidden': 'user_id IN (SELECT user_id FROM auth_user_groups WHERE group_id = %s)' % settings.COMMENTS_BANNED_USERS_GROUP})
126
if 'user' in context and context['user'].is_authenticated():
127
user_id = context['user'].id
128
context['user_can_moderate_comments'] = Comment.objects.user_is_moderator(context['user'])
131
context['user_can_moderate_comments'] = False
132
# Only display comments by banned users to those users themselves.
133
if settings.COMMENTS_BANNED_USERS_GROUP:
134
comment_list = [c for c in comment_list if not c.is_hidden or (user_id == c.user_id)]
136
context[self.var_name] = comment_list
141
Displays a comment form for the given params.
145
{% comment_form for [pkg].[py_module_name] [context_var_containing_obj_id] with [list of options] %}
149
{% comment_form for lcom.eventtimes event.id with is_public yes photos_optional thumbs,200,400 ratings_optional scale:1-5|first_option|second_option %}
151
``[context_var_containing_obj_id]`` can be a hard-coded integer or a variable containing the ID.
153
def __init__(self, free):
156
def __call__(self, parser, token):
157
tokens = token.contents.split()
159
raise template.TemplateSyntaxError, "%r tag requires at least 3 arguments" % tokens[0]
160
if tokens[1] != 'for':
161
raise template.TemplateSyntaxError, "Second argument in %r tag must be 'for'" % tokens[0]
163
package, module = tokens[2].split('.')
164
except ValueError: # unpack list of wrong size
165
raise template.TemplateSyntaxError, "Third argument in %r tag must be in the format 'package.module'" % tokens[0]
167
content_type = ContentType.objects.get(app_label__exact=package, model__exact=module)
168
except ContentType.DoesNotExist:
169
raise template.TemplateSyntaxError, "%r tag has invalid content-type '%s.%s'" % (tokens[0], package, module)
170
obj_id_lookup_var, obj_id = None, None
171
if tokens[3].isdigit():
173
try: # ensure the object ID is valid
174
content_type.get_object_for_this_type(pk=obj_id)
175
except ObjectDoesNotExist:
176
raise template.TemplateSyntaxError, "%r tag refers to %s object with ID %s, which doesn't exist" % (tokens[0], content_type.name, obj_id)
178
obj_id_lookup_var = tokens[3]
181
if tokens[4] != 'with':
182
raise template.TemplateSyntaxError, "Fourth argument in %r tag must be 'with'" % tokens[0]
183
for option, args in zip(tokens[5::2], tokens[6::2]):
184
option = smart_str(option)
185
if option in ('photos_optional', 'photos_required') and not self.free:
186
# VALIDATION ##############################################
187
option_list = args.split(',')
188
if len(option_list) % 3 != 0:
189
raise template.TemplateSyntaxError, "Incorrect number of comma-separated arguments to %r tag" % tokens[0]
190
for opt in option_list[::3]:
191
if not opt.isalnum():
192
raise template.TemplateSyntaxError, "Invalid photo directory name in %r tag: '%s'" % (tokens[0], opt)
193
for opt in option_list[1::3] + option_list[2::3]:
194
if not opt.isdigit() or not (MIN_PHOTO_DIMENSION <= int(opt) <= MAX_PHOTO_DIMENSION):
195
raise template.TemplateSyntaxError, "Invalid photo dimension in %r tag: '%s'. Only values between %s and %s are allowed." % (tokens[0], opt, MIN_PHOTO_DIMENSION, MAX_PHOTO_DIMENSION)
196
# VALIDATION ENDS #########################################
197
kwargs[option] = True
198
kwargs['photo_options'] = args
199
elif option in ('ratings_optional', 'ratings_required') and not self.free:
200
# VALIDATION ##############################################
201
if 2 < len(args.split('|')) > 9:
202
raise template.TemplateSyntaxError, "Incorrect number of '%s' options in %r tag. Use between 2 and 8." % (option, tokens[0])
203
if re.match('^scale:\d+\-\d+\:$', args.split('|')[0]):
204
raise template.TemplateSyntaxError, "Invalid 'scale' in %r tag's '%s' options" % (tokens[0], option)
205
# VALIDATION ENDS #########################################
206
kwargs[option] = True
207
kwargs['rating_options'] = args
208
elif option in ('is_public'):
209
kwargs[option] = (args == 'true')
211
raise template.TemplateSyntaxError, "%r tag got invalid parameter '%s'" % (tokens[0], option)
212
return CommentFormNode(content_type, obj_id_lookup_var, obj_id, self.free, **kwargs)
214
class DoCommentCount:
216
Gets comment count for the given params and populates the template context
217
with a variable containing that value, whose name is defined by the 'as'
222
{% get_comment_count for [pkg].[py_module_name] [context_var_containing_obj_id] as [varname] %}
226
{% get_comment_count for lcom.eventtimes event.id as comment_count %}
228
Note: ``[context_var_containing_obj_id]`` can also be a hard-coded integer, like this::
230
{% get_comment_count for lcom.eventtimes 23 as comment_count %}
232
def __init__(self, free):
235
def __call__(self, parser, token):
236
tokens = token.contents.split()
237
# Now tokens is a list like this:
238
# ['get_comment_list', 'for', 'lcom.eventtimes', 'event.id', 'as', 'comment_list']
240
raise template.TemplateSyntaxError, "%r tag requires 5 arguments" % tokens[0]
241
if tokens[1] != 'for':
242
raise template.TemplateSyntaxError, "Second argument in %r tag must be 'for'" % tokens[0]
244
package, module = tokens[2].split('.')
245
except ValueError: # unpack list of wrong size
246
raise template.TemplateSyntaxError, "Third argument in %r tag must be in the format 'package.module'" % tokens[0]
248
content_type = ContentType.objects.get(app_label__exact=package, model__exact=module)
249
except ContentType.DoesNotExist:
250
raise template.TemplateSyntaxError, "%r tag has invalid content-type '%s.%s'" % (tokens[0], package, module)
251
var_name, obj_id = None, None
252
if tokens[3].isdigit():
254
try: # ensure the object ID is valid
255
content_type.get_object_for_this_type(pk=obj_id)
256
except ObjectDoesNotExist:
257
raise template.TemplateSyntaxError, "%r tag refers to %s object with ID %s, which doesn't exist" % (tokens[0], content_type.name, obj_id)
260
if tokens[4] != 'as':
261
raise template.TemplateSyntaxError, "Fourth argument in %r must be 'as'" % tokens[0]
262
return CommentCountNode(package, module, var_name, obj_id, tokens[5], self.free)
264
class DoGetCommentList:
266
Gets comments for the given params and populates the template context with a
267
special comment_package variable, whose name is defined by the ``as``
272
{% get_comment_list for [pkg].[py_module_name] [context_var_containing_obj_id] as [varname] (reversed) %}
276
{% get_comment_list for lcom.eventtimes event.id as comment_list %}
278
Note: ``[context_var_containing_obj_id]`` can also be a hard-coded integer, like this::
280
{% get_comment_list for lcom.eventtimes 23 as comment_list %}
282
To get a list of comments in reverse order -- that is, most recent first --
283
pass ``reversed`` as the last param::
285
{% get_comment_list for lcom.eventtimes event.id as comment_list reversed %}
287
def __init__(self, free):
290
def __call__(self, parser, token):
291
tokens = token.contents.split()
292
# Now tokens is a list like this:
293
# ['get_comment_list', 'for', 'lcom.eventtimes', 'event.id', 'as', 'comment_list']
294
if not len(tokens) in (6, 7):
295
raise template.TemplateSyntaxError, "%r tag requires 5 or 6 arguments" % tokens[0]
296
if tokens[1] != 'for':
297
raise template.TemplateSyntaxError, "Second argument in %r tag must be 'for'" % tokens[0]
299
package, module = tokens[2].split('.')
300
except ValueError: # unpack list of wrong size
301
raise template.TemplateSyntaxError, "Third argument in %r tag must be in the format 'package.module'" % tokens[0]
303
content_type = ContentType.objects.get(app_label__exact=package,model__exact=module)
304
except ContentType.DoesNotExist:
305
raise template.TemplateSyntaxError, "%r tag has invalid content-type '%s.%s'" % (tokens[0], package, module)
306
var_name, obj_id = None, None
307
if tokens[3].isdigit():
309
try: # ensure the object ID is valid
310
content_type.get_object_for_this_type(pk=obj_id)
311
except ObjectDoesNotExist:
312
raise template.TemplateSyntaxError, "%r tag refers to %s object with ID %s, which doesn't exist" % (tokens[0], content_type.name, obj_id)
315
if tokens[4] != 'as':
316
raise template.TemplateSyntaxError, "Fourth argument in %r must be 'as'" % tokens[0]
318
if tokens[6] != 'reversed':
319
raise template.TemplateSyntaxError, "Final argument in %r must be 'reversed' if given" % tokens[0]
323
return CommentListNode(package, module, var_name, obj_id, tokens[5], self.free, ordering)
325
# registration comments
326
register.tag('get_comment_list', DoGetCommentList(False))
327
register.tag('comment_form', DoCommentForm(False))
328
register.tag('get_comment_count', DoCommentCount(False))
330
register.tag('get_free_comment_list', DoGetCommentList(True))
331
register.tag('free_comment_form', DoCommentForm(True))
332
register.tag('get_free_comment_count', DoCommentCount(True))