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import datetime
import hashlib
from urllib import quote_plus, urlencode
from django.db import models
from django.utils.http import urlquote as django_urlquote
from django.utils.html import strip_tags
from django.core.urlresolvers import reverse
from django.contrib.auth.models import User
from django.contrib.contenttypes import generic
from django.contrib.contenttypes.models import ContentType
from django.utils.translation import ugettext as _
from django.contrib.sitemaps import ping_google
import django.dispatch
from django.conf import settings
from forum.utils import markup
from django.utils import html
import logging
#todo: following methods belong to a future common post class
def render_post_text_and_get_newly_mentioned_users(post,
urlize_content = False):
text = post.get_text()
if urlize_content:
text = html.urlize(text)
if '@' not in text:
post.html = text
return list()
from forum.models.user import Activity
mentioned_by = post.get_last_author()
op = post.get_origin_post()
anticipated_authors = op.get_author_list( include_comments = True, recursive = True )
extra_name_seeds = markup.extract_mentioned_name_seeds(text)
extra_authors = set()
for name_seed in extra_name_seeds:
extra_authors.update(User.objects.filter(username__startswith = name_seed))
#it is important to preserve order here so that authors of post get mentioned first
anticipated_authors += list(extra_authors)
mentioned_authors, post.html = markup.mentionize_text(text, anticipated_authors)
#maybe delete some previous mentions
if post.id != None:
#only look for previous mentions if post was already saved before
prev_mention_qs = Activity.objects.get_mentions(
mentioned_in = post
)
new_set = set(mentioned_authors)
for mention in prev_mention_qs:
delta_set = set(mention.receiving_users.all()) - new_set
if not delta_set:
mention.delete()
new_set -= delta_set
mentioned_authors = list(new_set)
return mentioned_authors
def save_content(self, urlize_content = False, **kwargs):
"""generic save method to use with posts
"""
new_mentions = self._render_text_and_get_newly_mentioned_users(
urlize_content
)
from forum.models.user import Activity
#this save must precede saving the mention activity
super(self.__class__, self).save(**kwargs)
post_author = self.get_last_author()
for u in new_mentions:
Activity.objects.create_new_mention(
mentioned_whom = u,
mentioned_in = self,
mentioned_by = post_author
)
#todo: this is handled in signal because models for posts
#are too spread out
from forum.models import signals
signals.post_updated.send(
post = self,
newly_mentioned_users = new_mentions,
sender = self.__class__
)
try:
ping_google()
except Exception:
logging.debug('problem pinging google did you register you sitemap with google?')
class UserContent(models.Model):
user = models.ForeignKey(User, related_name='%(class)ss')
class Meta:
abstract = True
app_label = 'forum'
def get_last_author(self):
return self.user
class MetaContent(models.Model):
"""
Base class for Vote, Comment and FlaggedItem
"""
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey('content_type', 'object_id')
class Meta:
abstract = True
app_label = 'forum'
class DeletableContent(models.Model):
deleted = models.BooleanField(default=False)
deleted_at = models.DateTimeField(null=True, blank=True)
deleted_by = models.ForeignKey(User, null=True, blank=True, related_name='deleted_%(class)ss')
class Meta:
abstract = True
app_label = 'forum'
class ContentRevision(models.Model):
"""
Base class for QuestionRevision and AnswerRevision
"""
revision = models.PositiveIntegerField()
author = models.ForeignKey(User, related_name='%(class)ss')
revised_at = models.DateTimeField()
summary = models.CharField(max_length=300, blank=True)
text = models.TextField()
class Meta:
abstract = True
app_label = 'forum'
class AnonymousContent(models.Model):
"""
Base class for AnonymousQuestion and AnonymousAnswer
"""
session_key = models.CharField(max_length=40) #session id for anonymous questions
wiki = models.BooleanField(default=False)
added_at = models.DateTimeField(default=datetime.datetime.now)
ip_addr = models.IPAddressField(max_length=21) #allow high port numbers
author = models.ForeignKey(User,null=True)
text = models.TextField()
summary = models.CharField(max_length=180)
class Meta:
abstract = True
app_label = 'forum'
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