from django.template.loader import render_to_string
from django.db import models
from django.db.models import Count
from django.core.urlresolvers import reverse
from boards.models.base import Viewable
__author__ = 'neko259'
class TagManager(models.Manager):
def get_not_empty_tags(self):
"""
Gets tags that have non-archived threads.
"""
return self.filter(thread__archived=False)\
.annotate(num_threads=Count('thread')).filter(num_threads__gt=0)
class Tag(models.Model, Viewable):
"""
A tag is a text node assigned to the thread. The tag serves as a board
section. There can be multiple tags for each thread
"""
objects = TagManager()
class Meta:
app_label = 'boards'
ordering = ('name',)
name = models.CharField(max_length=100, db_index=True)
required = models.BooleanField(default=False)
def __str__(self):
return self.name
def is_empty(self) -> bool:
"""
Checks if the tag has some threads.
"""
return self.get_thread_count() == 0
def get_thread_count(self) -> int:
return self.get_threads().count()
def get_url(self):
return reverse('tag', kwargs={'tag_name': self.name})
def get_threads(self):
return self.thread_set.order_by('-bump_time')
def is_required(self):
return self.required
def get_view(self):
link = '{}'.format(
self.get_url(), self.name)
if self.is_required():
link = '{}'.format(link)
return link
def get_search_view(self, *args, **kwargs):
return render_to_string('boards/tag.html', {
'tag': self,
})