##// END OF EJS Templates
Fixed thread gallery view
Fixed thread gallery view

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thread.py
191 lines | 5.4 KiB | text/x-python | PythonLexer
import logging
from django.db.models import Count
from django.utils import timezone
from django.core.cache import cache
from django.db import models
from boards import settings
__author__ = 'neko259'
logger = logging.getLogger(__name__)
CACHE_KEY_OPENING_POST = 'opening_post_id'
class ThreadManager(models.Manager):
def process_oldest_threads(self):
"""
Preserves maximum thread count. If there are too many threads,
archive or delete the old ones.
"""
threads = Thread.objects.filter(archived=False).order_by('-bump_time')
thread_count = threads.count()
if thread_count > settings.MAX_THREAD_COUNT:
num_threads_to_delete = thread_count - settings.MAX_THREAD_COUNT
old_threads = threads[thread_count - num_threads_to_delete:]
for thread in old_threads:
if settings.ARCHIVE_THREADS:
self._archive_thread(thread)
else:
thread.delete()
logger.info('Processed %d old threads' % num_threads_to_delete)
def _archive_thread(self, thread):
thread.archived = True
thread.bumpable = False
thread.last_edit_time = timezone.now()
thread.save(update_fields=['archived', 'last_edit_time', 'bumpable'])
class Thread(models.Model):
objects = ThreadManager()
class Meta:
app_label = 'boards'
tags = models.ManyToManyField('Tag')
bump_time = models.DateTimeField()
last_edit_time = models.DateTimeField()
replies = models.ManyToManyField('Post', symmetrical=False, null=True,
blank=True, related_name='tre+')
archived = models.BooleanField(default=False)
bumpable = models.BooleanField(default=True)
def get_tags(self):
"""
Gets a sorted tag list.
"""
return self.tags.order_by('name')
def bump(self):
"""
Bumps (moves to up) thread if possible.
"""
if self.can_bump():
self.bump_time = timezone.now()
if self.get_reply_count() >= settings.MAX_POSTS_PER_THREAD:
self.bumpable = False
logger.info('Bumped thread %d' % self.id)
def get_reply_count(self):
return self.replies.count()
def get_images_count(self):
# TODO Use sum
total_count = 0
for post_with_image in self.replies.annotate(images_count=Count(
'images')):
total_count += post_with_image.images_count
return total_count
def can_bump(self):
"""
Checks if the thread can be bumped by replying to it.
"""
return self.bumpable
def get_last_replies(self):
"""
Gets several last replies, not including opening post
"""
if settings.LAST_REPLIES_COUNT > 0:
reply_count = self.get_reply_count()
if reply_count > 0:
reply_count_to_show = min(settings.LAST_REPLIES_COUNT,
reply_count - 1)
replies = self.get_replies()
last_replies = replies[reply_count - reply_count_to_show:]
return last_replies
def get_skipped_replies_count(self):
"""
Gets number of posts between opening post and last replies.
"""
reply_count = self.get_reply_count()
last_replies_count = min(settings.LAST_REPLIES_COUNT,
reply_count - 1)
return reply_count - last_replies_count - 1
def get_replies(self, view_fields_only=False):
"""
Gets sorted thread posts
"""
query = self.replies.order_by('pub_time').prefetch_related('images')
if view_fields_only:
query = query.defer('poster_user_agent')
return query.all()
def get_replies_with_images(self, view_fields_only=False):
return self.get_replies(view_fields_only).annotate(images_count=Count(
'images')).filter(images_count__gt=0)
def add_tag(self, tag):
"""
Connects thread to a tag and tag to a thread
"""
self.tags.add(tag)
tag.threads.add(self)
def remove_tag(self, tag):
self.tags.remove(tag)
tag.threads.remove(self)
def get_opening_post(self, only_id=False):
"""
Gets the first post of the thread
"""
query = self.replies.order_by('pub_time')
if only_id:
query = query.only('id')
opening_post = query.first()
return opening_post
def get_opening_post_id(self):
"""
Gets ID of the first thread post.
"""
cache_key = CACHE_KEY_OPENING_POST + str(self.id)
opening_post_id = cache.get(cache_key)
if not opening_post_id:
opening_post_id = self.get_opening_post(only_id=True).id
cache.set(cache_key, opening_post_id)
return opening_post_id
def __unicode__(self):
return str(self.id)
def get_pub_time(self):
"""
Gets opening post's pub time because thread does not have its own one.
"""
return self.get_opening_post().pub_time
def delete(self, using=None):
if self.replies.exists():
self.replies.all().delete()
super(Thread, self).delete(using)
def __str__(self):
return 'T#{}/{}'.format(self.id, self.get_opening_post_id())