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1 """
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2 Models for the smiley application.
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3 """
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4 from django.db import models
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5 from django.core.cache import cache
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6
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7 CACHE_TIMEOUT = 60 * 5 # seconds
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8
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9
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10 class SmileyManager(models.Manager):
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11
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12 def get_smiley_map(self):
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13 map = cache.get('smiley_map')
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14 if map:
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15 return map
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16
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17 map = dict((s.code, s.html()) for s in self.all())
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18 cache.set('smiley_map', map, CACHE_TIMEOUT)
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19 return map
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20
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21 def get_smilies(self, extra=False):
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22 key = 'smileys' if not extra else 'smileys_extra'
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23 smilies = cache.get(key)
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24 if smilies:
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25 return smilies
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26
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27 smilies = self.filter(is_extra=extra)
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28 cache.set(key, smilies, CACHE_TIMEOUT)
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29 return smilies
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30
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31
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32 class Smiley(models.Model):
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33 image = models.ImageField(upload_to='smiley/images/')
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34 title = models.CharField(max_length=32)
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35 code = models.CharField(max_length=32)
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36 is_extra = models.BooleanField()
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37
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38 objects = SmileyManager()
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39
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40 class Meta:
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41 verbose_name_plural = 'Smilies'
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42 ordering = ('title', )
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43
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44 def __unicode__(self):
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45 return self.title
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46
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47 def get_absolute_url(self):
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48 return self.image.url
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49
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50 def html(self):
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51 if self.image:
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52 return (u'<img src="%s" alt="%s" title="%s" />' %
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53 (self.get_absolute_url(), self.title, self.title))
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54 return u''
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55 html.allow_tags = True
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56
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