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Still reducing the number of queries on the Forum

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Signed-off-by: Skia <skia@libskia.so>
This commit is contained in:
Skia 2017-05-30 22:10:50 +02:00
parent ba65dc5d46
commit 06b67f1d27
6 changed files with 26 additions and 22 deletions
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19
forum/migrations/0004_auto_20170520_1235.py → forum/migrations/0004_auto_20170530_2058.py
View File

@ -22,36 +22,41 @@ class Migration(migrations.Migration):
migrations.AddField(
model_name='forum',
name='_last_message',
field=models.ForeignKey(related_name='forums_where_its_last', to='forum.ForumMessage', null=True, verbose_name='the last message'),
field=models.ForeignKey(related_name='forums_where_its_last', null=True, to='forum.ForumMessage', verbose_name='the last message'),
),
migrations.AddField(
model_name='forum',
name='_topic_number',
field=models.IntegerField(default=0, verbose_name='number of topics'),
field=models.IntegerField(verbose_name='number of topics', default=0),
),
migrations.AddField(
model_name='forummessage',
name='_deleted',
field=models.BooleanField(default=False, verbose_name='is deleted'),
field=models.BooleanField(verbose_name='is deleted', default=False),
),
migrations.AddField(
model_name='forumtopic',
name='_last_message',
field=models.ForeignKey(related_name='+', to='forum.ForumMessage', null=True, verbose_name='the last message'),
field=models.ForeignKey(related_name='+', null=True, to='forum.ForumMessage', verbose_name='the last message'),
),
migrations.AddField(
model_name='forumtopic',
name='_message_number',
field=models.IntegerField(verbose_name='number of messages', default=0),
),
migrations.AddField(
model_name='forumtopic',
name='_title',
field=models.CharField(max_length=64, blank=True, verbose_name='title'),
field=models.CharField(max_length=64, verbose_name='title', blank=True),
),
migrations.AlterField(
model_name='forum',
name='description',
field=models.CharField(max_length=512, default='', verbose_name='description'),
field=models.CharField(max_length=512, verbose_name='description', default=''),
),
migrations.AlterField(
model_name='forum',
name='id',
field=models.AutoField(primary_key=True, serialize=False, db_index=True),
field=models.AutoField(serialize=False, db_index=True, primary_key=True),
),
]

9
forum/models.py
View File

@ -183,6 +183,7 @@ class ForumTopic(models.Model):
description = models.CharField(_('description'), max_length=256, default="")
_last_message = models.ForeignKey('ForumMessage', related_name="+", verbose_name=_("the last message"), null=True)
_title = models.CharField(_('title'), max_length=64, blank=True)
_message_number = models.IntegerField(_("number of messages"), default=0)
class Meta:
ordering = ['-_last_message__date']
@ -220,11 +221,6 @@ class ForumTopic(models.Model):
@cached_property
def title(self):
if self._title:
return self._title
else:
self._title = self.messages.order_by('id').first().title
self.save()
return self._title
class ForumMessage(models.Model):
@ -250,9 +246,9 @@ class ForumMessage(models.Model):
super(ForumMessage, self).save(*args, **kwargs)
if self.is_last_in_topic():
self.topic._last_message_id = self.id
self.topic.save()
if self.is_first_in_topic():
self.topic._title = self.title
self.topic._message_number = self.topic.messages.count()
self.topic.save()
def is_first_in_topic(self):
@ -285,6 +281,7 @@ class ForumMessage(models.Model):
def mark_as_read(self, user):
try: # Need the try/except because of AnonymousUser
if not self.is_read(user):
self.readers.add(user)
except: pass

2
forum/templates/forum/forum.jinja
View File

@ -36,7 +36,7 @@
</div>
</div>
{{ display_forum(forum, user, True) }}
{% for f in forum.children.all() %}
{% for f in forum.children.all().select_related("_last_message__author", "_last_message__topic") %}
{{ display_forum(f, user) }}
{% endfor %}
{% endif %}

2
forum/templates/forum/macros.jinja
View File

@ -69,7 +69,7 @@
{{ user_profile_link(topic.author) }}
</p>
<p class="ib w_medium" style="text-align: center;">
{{ topic.messages.count() }}
{{ topic._message_number }}
</p>
</div>
<p class="ib w_medium" style="text-align: center;">

8
forum/views.py
View File

@ -41,7 +41,7 @@ from core.views import CanViewMixin, CanEditMixin, CanEditPropMixin, CanCreateMi
from forum.models import Forum, ForumMessage, ForumTopic, ForumMessageMeta
class ForumMainView(ListView):
queryset = Forum.objects.filter(parent=None).select_related("_last_message__author", "_last_message__topic___title")
queryset = Forum.objects.filter(parent=None).prefetch_related("children___last_message__author", "children___last_message__topic")
template_name = "forum/main.jinja"
class ForumMarkAllAsRead(RedirectView):
@ -122,7 +122,8 @@ class ForumDetailView(CanViewMixin, DetailView):
def get_context_data(self, **kwargs):
kwargs = super(ForumDetailView, self).get_context_data(**kwargs)
qs = self.object.topics.order_by('-_last_message__date').select_related('_last_message')
qs = self.object.topics.order_by('-_last_message__date').select_related('_last_message__author', 'author')\
.prefetch_related("forum__edit_groups")
paginator = Paginator(qs,
settings.SITH_FORUM_PAGE_LENGTH)
page = self.request.GET.get('topic_page')
@ -178,7 +179,8 @@ class ForumTopicDetailView(CanViewMixin, DetailView):
kwargs['first_unread_message_id'] = msg.id
except:
kwargs['first_unread_message_id'] = float("inf")
paginator = Paginator(self.object.messages.select_related('author__avatar_pict').order_by('date'),
paginator = Paginator(self.object.messages.select_related('author__avatar_pict')\
.prefetch_related('topic__forum__edit_groups', 'readers').order_by('date'),
settings.SITH_FORUM_PAGE_LENGTH)
page = self.request.GET.get('page')
try:

2
migrate.py
View File

@ -1245,7 +1245,7 @@ def migrate_forum():
id=r['id_sujet'],
author=author or root,
forum=parent or saloon,
_title=to_unicode(r['titre_sujet']),
_title=to_unicode(r['titre_sujet'])[:64],
description=to_unicode(r['soustitre_sujet']),
)
topic.save()