286 lines
12 KiB
Python
286 lines
12 KiB
Python
from django.db import models
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.contrib.sites.models import Site
|
|
from django.contrib.auth.models import User
|
|
from django.utils.translation import ugettext_lazy as _
|
|
from django.conf import settings
|
|
import datetime
|
|
|
|
MIN_PHOTO_DIMENSION = 5
|
|
MAX_PHOTO_DIMENSION = 1000
|
|
|
|
# option codes for comment-form hidden fields
|
|
PHOTOS_REQUIRED = 'pr'
|
|
PHOTOS_OPTIONAL = 'pa'
|
|
RATINGS_REQUIRED = 'rr'
|
|
RATINGS_OPTIONAL = 'ra'
|
|
IS_PUBLIC = 'ip'
|
|
|
|
# what users get if they don't have any karma
|
|
DEFAULT_KARMA = 5
|
|
KARMA_NEEDED_BEFORE_DISPLAYED = 3
|
|
|
|
class CommentManager(models.Manager):
|
|
def get_security_hash(self, options, photo_options, rating_options, target):
|
|
"""
|
|
Returns the MD5 hash of the given options (a comma-separated string such as
|
|
'pa,ra') and target (something like 'lcom.eventtimes:5157'). Used to
|
|
validate that submitted form options have not been tampered-with.
|
|
"""
|
|
import md5
|
|
return md5.new(options + photo_options + rating_options + target + settings.SECRET_KEY).hexdigest()
|
|
|
|
def get_rating_options(self, rating_string):
|
|
"""
|
|
Given a rating_string, this returns a tuple of (rating_range, options).
|
|
>>> s = "scale:1-10|First_category|Second_category"
|
|
>>> Comment.objects.get_rating_options(s)
|
|
([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], ['First category', 'Second category'])
|
|
"""
|
|
rating_range, options = rating_string.split('|', 1)
|
|
rating_range = range(int(rating_range[6:].split('-')[0]), int(rating_range[6:].split('-')[1])+1)
|
|
choices = [c.replace('_', ' ') for c in options.split('|')]
|
|
return rating_range, choices
|
|
|
|
def get_list_with_karma(self, **kwargs):
|
|
"""
|
|
Returns a list of Comment objects matching the given lookup terms, with
|
|
_karma_total_good and _karma_total_bad filled.
|
|
"""
|
|
extra_kwargs = {}
|
|
extra_kwargs.setdefault('select', {})
|
|
extra_kwargs['select']['_karma_total_good'] = 'SELECT COUNT(*) FROM comments_karmascore, comments_comment WHERE comments_karmascore.comment_id=comments_comment.id AND score=1'
|
|
extra_kwargs['select']['_karma_total_bad'] = 'SELECT COUNT(*) FROM comments_karmascore, comments_comment WHERE comments_karmascore.comment_id=comments_comment.id AND score=-1'
|
|
return self.filter(**kwargs).extra(**extra_kwargs)
|
|
|
|
def user_is_moderator(self, user):
|
|
if user.is_superuser:
|
|
return True
|
|
for g in user.groups.all():
|
|
if g.id == settings.COMMENTS_MODERATORS_GROUP:
|
|
return True
|
|
return False
|
|
|
|
class Comment(models.Model):
|
|
user = models.ForeignKey(User, raw_id_admin=True)
|
|
content_type = models.ForeignKey(ContentType)
|
|
object_id = models.IntegerField(_('object ID'))
|
|
headline = models.CharField(_('headline'), maxlength=255, blank=True)
|
|
comment = models.TextField(_('comment'), maxlength=3000)
|
|
rating1 = models.PositiveSmallIntegerField(_('rating #1'), blank=True, null=True)
|
|
rating2 = models.PositiveSmallIntegerField(_('rating #2'), blank=True, null=True)
|
|
rating3 = models.PositiveSmallIntegerField(_('rating #3'), blank=True, null=True)
|
|
rating4 = models.PositiveSmallIntegerField(_('rating #4'), blank=True, null=True)
|
|
rating5 = models.PositiveSmallIntegerField(_('rating #5'), blank=True, null=True)
|
|
rating6 = models.PositiveSmallIntegerField(_('rating #6'), blank=True, null=True)
|
|
rating7 = models.PositiveSmallIntegerField(_('rating #7'), blank=True, null=True)
|
|
rating8 = models.PositiveSmallIntegerField(_('rating #8'), blank=True, null=True)
|
|
# This field designates whether to use this row's ratings in aggregate
|
|
# functions (summaries). We need this because people are allowed to post
|
|
# multiple reviews on the same thing, but the system will only use the
|
|
# latest one (with valid_rating=True) in tallying the reviews.
|
|
valid_rating = models.BooleanField(_('is valid rating'))
|
|
submit_date = models.DateTimeField(_('date/time submitted'), auto_now_add=True)
|
|
is_public = models.BooleanField(_('is public'))
|
|
ip_address = models.IPAddressField(_('IP address'), blank=True, null=True)
|
|
is_removed = models.BooleanField(_('is removed'), help_text=_('Check this box if the comment is inappropriate. A "This comment has been removed" message will be displayed instead.'))
|
|
site = models.ForeignKey(Site)
|
|
objects = CommentManager()
|
|
class Meta:
|
|
verbose_name = _('comment')
|
|
verbose_name_plural = _('comments')
|
|
ordering = ('-submit_date',)
|
|
class Admin:
|
|
fields = (
|
|
(None, {'fields': ('content_type', 'object_id', 'site')}),
|
|
('Content', {'fields': ('user', 'headline', 'comment')}),
|
|
('Ratings', {'fields': ('rating1', 'rating2', 'rating3', 'rating4', 'rating5', 'rating6', 'rating7', 'rating8', 'valid_rating')}),
|
|
('Meta', {'fields': ('is_public', 'is_removed', 'ip_address')}),
|
|
)
|
|
list_display = ('user', 'submit_date', 'content_type', 'get_content_object')
|
|
list_filter = ('submit_date',)
|
|
date_hierarchy = 'submit_date'
|
|
search_fields = ('comment', 'user__username')
|
|
|
|
def __repr__(self):
|
|
return "%s: %s..." % (self.user.username, self.comment[:100])
|
|
|
|
def get_absolute_url(self):
|
|
return self.get_content_object().get_absolute_url() + "#c" + str(self.id)
|
|
|
|
def get_crossdomain_url(self):
|
|
return "/r/%d/%d/" % (self.content_type_id, self.object_id)
|
|
|
|
def get_flag_url(self):
|
|
return "/comments/flag/%s/" % self.id
|
|
|
|
def get_deletion_url(self):
|
|
return "/comments/delete/%s/" % self.id
|
|
|
|
def get_content_object(self):
|
|
"""
|
|
Returns the object that this comment is a comment on. Returns None if
|
|
the object no longer exists.
|
|
"""
|
|
from django.core.exceptions import ObjectDoesNotExist
|
|
try:
|
|
return self.content_type.get_object_for_this_type(pk=self.object_id)
|
|
except ObjectDoesNotExist:
|
|
return None
|
|
|
|
get_content_object.short_description = _('Content object')
|
|
|
|
def _fill_karma_cache(self):
|
|
"Helper function that populates good/bad karma caches"
|
|
good, bad = 0, 0
|
|
for k in self.karmascore_set:
|
|
if k.score == -1:
|
|
bad +=1
|
|
elif k.score == 1:
|
|
good +=1
|
|
self._karma_total_good, self._karma_total_bad = good, bad
|
|
|
|
def get_good_karma_total(self):
|
|
if not hasattr(self, "_karma_total_good"):
|
|
self._fill_karma_cache()
|
|
return self._karma_total_good
|
|
|
|
def get_bad_karma_total(self):
|
|
if not hasattr(self, "_karma_total_bad"):
|
|
self._fill_karma_cache()
|
|
return self._karma_total_bad
|
|
|
|
def get_karma_total(self):
|
|
if not hasattr(self, "_karma_total_good") or not hasattr(self, "_karma_total_bad"):
|
|
self._fill_karma_cache()
|
|
return self._karma_total_good + self._karma_total_bad
|
|
|
|
def get_as_text(self):
|
|
return _('Posted by %(user)s at %(date)s\n\n%(comment)s\n\nhttp://%(domain)s%(url)s') % \
|
|
{'user': self.user.username, 'date': self.submit_date,
|
|
'comment': self.comment, 'domain': self.site.domain, 'url': self.get_absolute_url()}
|
|
|
|
class FreeComment(models.Model):
|
|
# A FreeComment is a comment by a non-registered user.
|
|
content_type = models.ForeignKey(ContentType)
|
|
object_id = models.IntegerField(_('object ID'))
|
|
comment = models.TextField(_('comment'), maxlength=3000)
|
|
person_name = models.CharField(_("person's name"), maxlength=50)
|
|
submit_date = models.DateTimeField(_('date/time submitted'), auto_now_add=True)
|
|
is_public = models.BooleanField(_('is public'))
|
|
ip_address = models.IPAddressField(_('ip address'))
|
|
# TODO: Change this to is_removed, like Comment
|
|
approved = models.BooleanField(_('approved by staff'))
|
|
site = models.ForeignKey(Site)
|
|
class Meta:
|
|
verbose_name = _('free comment')
|
|
verbose_name_plural = _('free comments')
|
|
ordering = ('-submit_date',)
|
|
class Admin:
|
|
fields = (
|
|
(None, {'fields': ('content_type', 'object_id', 'site')}),
|
|
('Content', {'fields': ('person_name', 'comment')}),
|
|
('Meta', {'fields': ('submit_date', 'is_public', 'ip_address', 'approved')}),
|
|
)
|
|
list_display = ('person_name', 'submit_date', 'content_type', 'get_content_object')
|
|
list_filter = ('submit_date',)
|
|
date_hierarchy = 'submit_date'
|
|
search_fields = ('comment', 'person_name')
|
|
|
|
def __repr__(self):
|
|
return "%s: %s..." % (self.person_name, self.comment[:100])
|
|
|
|
def get_absolute_url(self):
|
|
return self.get_content_object().get_absolute_url() + "#c" + str(self.id)
|
|
|
|
def get_content_object(self):
|
|
"""
|
|
Returns the object that this comment is a comment on. Returns None if
|
|
the object no longer exists.
|
|
"""
|
|
from django.core.exceptions import ObjectDoesNotExist
|
|
try:
|
|
return self.content_type.get_object_for_this_type(pk=self.object_id)
|
|
except ObjectDoesNotExist:
|
|
return None
|
|
|
|
get_content_object.short_description = _('Content object')
|
|
|
|
class KarmaScoreManager(models.Manager):
|
|
def vote(self, user_id, comment_id, score):
|
|
try:
|
|
karma = self.get(comment__pk=comment_id, user__pk=user_id)
|
|
except self.model.DoesNotExist:
|
|
karma = self.model(None, user_id=user_id, comment_id=comment_id, score=score, scored_date=datetime.datetime.now())
|
|
karma.save()
|
|
else:
|
|
karma.score = score
|
|
karma.scored_date = datetime.datetime.now()
|
|
karma.save()
|
|
|
|
def get_pretty_score(self, score):
|
|
"""
|
|
Given a score between -1 and 1 (inclusive), returns the same score on a
|
|
scale between 1 and 10 (inclusive), as an integer.
|
|
"""
|
|
if score is None:
|
|
return DEFAULT_KARMA
|
|
return int(round((4.5 * score) + 5.5))
|
|
|
|
class KarmaScore(models.Model):
|
|
user = models.ForeignKey(User)
|
|
comment = models.ForeignKey(Comment)
|
|
score = models.SmallIntegerField(_('score'), db_index=True)
|
|
scored_date = models.DateTimeField(_('score date'), auto_now=True)
|
|
objects = KarmaScoreManager()
|
|
class Meta:
|
|
verbose_name = _('karma score')
|
|
verbose_name_plural = _('karma scores')
|
|
unique_together = (('user', 'comment'),)
|
|
|
|
def __repr__(self):
|
|
return _("%(score)d rating by %(user)s") % {'score': self.score, 'user': self.user}
|
|
|
|
class UserFlagManager(models.Manager):
|
|
def flag(self, comment, user):
|
|
"""
|
|
Flags the given comment by the given user. If the comment has already
|
|
been flagged by the user, or it was a comment posted by the user,
|
|
nothing happens.
|
|
"""
|
|
if int(comment.user_id) == int(user.id):
|
|
return # A user can't flag his own comment. Fail silently.
|
|
try:
|
|
f = self.objects.get(user__pk=user.id, comment__pk=comment.id)
|
|
except self.model.DoesNotExist:
|
|
from django.core.mail import mail_managers
|
|
f = self.model(None, user.id, comment.id, None)
|
|
message = _('This comment was flagged by %(user)s:\n\n%(text)s') % {'user': user.username, 'text': comment.get_as_text()}
|
|
mail_managers('Comment flagged', message, fail_silently=True)
|
|
f.save()
|
|
|
|
class UserFlag(models.Model):
|
|
user = models.ForeignKey(User)
|
|
comment = models.ForeignKey(Comment)
|
|
flag_date = models.DateTimeField(_('flag date'), auto_now_add=True)
|
|
objects = UserFlagManager()
|
|
class Meta:
|
|
verbose_name = _('user flag')
|
|
verbose_name_plural = _('user flags')
|
|
unique_together = (('user', 'comment'),)
|
|
|
|
def __repr__(self):
|
|
return _("Flag by %r") % self.user
|
|
|
|
class ModeratorDeletion(models.Model):
|
|
user = models.ForeignKey(User, verbose_name='moderator')
|
|
comment = models.ForeignKey(Comment)
|
|
deletion_date = models.DateTimeField(_('deletion date'), auto_now_add=True)
|
|
class Meta:
|
|
verbose_name = _('moderator deletion')
|
|
verbose_name_plural = _('moderator deletions')
|
|
unique_together = (('user', 'comment'),)
|
|
|
|
def __repr__(self):
|
|
return _("Moderator deletion by %r") % self.user
|