gremmie@1: """
gremmie@1: Models for the smiley application.
gremmie@1: """
gremmie@1: from django.db import models
bgneal@123: from django.core.cache import cache
bgneal@123: 
bgneal@128: CACHE_TIMEOUT = 60 * 60      # seconds
gremmie@1: 
gremmie@1: 
gremmie@1: class SmileyManager(models.Manager):
gremmie@1: 
gremmie@1:     def get_smiley_map(self):
bgneal@128:         """
bgneal@128:         Returns a dictionary of 2-tuples, indexed by smiley codes.
bgneal@128:         Element 0 of the tuple is the HTML representation of the smiley,
bgneal@128:         and element 1 is the markdown version.
bgneal@128:         The dictionary is cached.
bgneal@128:         """
bgneal@123:         map = cache.get('smiley_map')
bgneal@123:         if map:
bgneal@123:             return map
gremmie@1: 
bgneal@128:         map = dict((s.code, (s.html(), s.markdown())) for s in self.all())
bgneal@123:         cache.set('smiley_map', map, CACHE_TIMEOUT)
bgneal@123:         return map
gremmie@1: 
bgneal@123:     def get_smilies(self, extra=False):
bgneal@123:         key = 'smileys' if not extra else 'smileys_extra'
bgneal@123:         smilies = cache.get(key)
bgneal@123:         if smilies:
bgneal@123:             return smilies
bgneal@123: 
bgneal@123:         smilies = self.filter(is_extra=extra)
bgneal@123:         cache.set(key, smilies, CACHE_TIMEOUT)
bgneal@123:         return smilies
gremmie@1: 
gremmie@1: 
gremmie@1: class Smiley(models.Model):
gremmie@1:     image = models.ImageField(upload_to='smiley/images/')
gremmie@1:     title = models.CharField(max_length=32)
gremmie@1:     code = models.CharField(max_length=32)
bgneal@123:     is_extra = models.BooleanField()
gremmie@1: 
gremmie@1:     objects = SmileyManager()
gremmie@1: 
gremmie@1:     class Meta:
gremmie@1:         verbose_name_plural = 'Smilies'
gremmie@1:         ordering = ('title', )
gremmie@1: 
gremmie@1:     def __unicode__(self):
gremmie@1:         return self.title
gremmie@1: 
gremmie@1:     def get_absolute_url(self):
gremmie@1:         return self.image.url
gremmie@1: 
gremmie@1:     def html(self):
bgneal@128:         """Returns a HTML img tag representation of the smiley."""
gremmie@1:         if self.image:
bgneal@123:             return (u'<img src="%s" alt="%s" title="%s" />' %
bgneal@123:                     (self.get_absolute_url(), self.title, self.title))
gremmie@1:         return u''
gremmie@1:     html.allow_tags = True
gremmie@1: 
bgneal@128:     def markdown(self):
bgneal@128:         """Returns a markdown representation of the smiley."""
bgneal@128:         if self.image:
bgneal@128:             return (u'![%s](%s "%s")' % 
bgneal@128:                     (self.title, self.get_absolute_url(), self.title))
bgneal@128:         return u''