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annotate gpp/smiley/models.py @ 265:1ba2c6bf6eb7

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Closing #98. Animated GIFs were losing their transparency and animated properties when saved as avatars. Reworked the avatar save process to only run the avatar through PIL if it is too big. This preserves the original uploaded file if it is within the desired size settings. This may still mangle big animated gifs. If this becomes a problem, then maybe look into calling the PIL Image.resize() method directly. Moved the PIL image specific functions from bio.forms to a new module: core.image for better reusability in the future.
author Brian Neal <bgneal@gmail.com>
date Fri, 24 Sep 2010 02:12:09 +0000
parents 3a626c48e9ae
children
rev   line source
gremmie@1 1 """
gremmie@1 2 Models for the smiley application.
gremmie@1 3 """
bgneal@211 4 import re
bgneal@211 5
gremmie@1 6 from django.db import models
bgneal@123 7 from django.core.cache import cache
bgneal@123 8
bgneal@128 9 CACHE_TIMEOUT = 60 * 60 # seconds
gremmie@1 10
gremmie@1 11
gremmie@1 12 class SmileyManager(models.Manager):
gremmie@1 13
gremmie@1 14 def get_smiley_map(self):
bgneal@128 15 """
bgneal@211 16 Returns a dictionary, the keys are smiley codes.
bgneal@211 17 The values are the HTML representations of the keys.
bgneal@128 18 The dictionary is cached.
bgneal@128 19 """
bgneal@123 20 map = cache.get('smiley_map')
bgneal@123 21 if map:
bgneal@123 22 return map
gremmie@1 23
bgneal@211 24 map = dict((s.code, s.html()) for s in self.all())
bgneal@123 25 cache.set('smiley_map', map, CACHE_TIMEOUT)
bgneal@123 26 return map
gremmie@1 27
bgneal@123 28 def get_smilies(self, extra=False):
bgneal@211 29 """
bgneal@211 30 Returns smiley model instances filtered by the extra flag.
bgneal@211 31 """
bgneal@123 32 key = 'smileys' if not extra else 'smileys_extra'
bgneal@123 33 smilies = cache.get(key)
bgneal@123 34 if smilies:
bgneal@123 35 return smilies
bgneal@123 36
bgneal@123 37 smilies = self.filter(is_extra=extra)
bgneal@123 38 cache.set(key, smilies, CACHE_TIMEOUT)
bgneal@123 39 return smilies
gremmie@1 40
bgneal@211 41 def get_smiley_regexes(self):
bgneal@211 42 """
bgneal@211 43 Returns a list of 2-tuples of the form: (regex, repl)
bgneal@211 44 where regex is a regular expression for a smiley and
bgneal@211 45 repl is the replacement image in Markdown format.
bgneal@211 46 """
bgneal@211 47 regexes = cache.get('smiley_regexes')
bgneal@211 48 if regexes:
bgneal@211 49 return regexes
bgneal@211 50
bgneal@211 51 regexes = [(re.compile(r"(^|\s|(?<=\s))%s(\s|$)" % re.escape(s.code)),
bgneal@211 52 r"\1%s\2" % s.markdown()) for s in self.all()]
bgneal@211 53 cache.set('smiley_regexes', regexes, CACHE_TIMEOUT)
bgneal@211 54 return regexes
bgneal@211 55
gremmie@1 56
gremmie@1 57 class Smiley(models.Model):
gremmie@1 58 image = models.ImageField(upload_to='smiley/images/')
gremmie@1 59 title = models.CharField(max_length=32)
gremmie@1 60 code = models.CharField(max_length=32)
bgneal@123 61 is_extra = models.BooleanField()
gremmie@1 62
gremmie@1 63 objects = SmileyManager()
gremmie@1 64
gremmie@1 65 class Meta:
gremmie@1 66 verbose_name_plural = 'Smilies'
gremmie@1 67 ordering = ('title', )
gremmie@1 68
gremmie@1 69 def __unicode__(self):
gremmie@1 70 return self.title
gremmie@1 71
gremmie@1 72 def get_absolute_url(self):
gremmie@1 73 return self.image.url
gremmie@1 74
gremmie@1 75 def html(self):
bgneal@128 76 """Returns a HTML img tag representation of the smiley."""
gremmie@1 77 if self.image:
bgneal@123 78 return (u'<img src="%s" alt="%s" title="%s" />' %
bgneal@123 79 (self.get_absolute_url(), self.title, self.title))
gremmie@1 80 return u''
gremmie@1 81 html.allow_tags = True
gremmie@1 82
bgneal@128 83 def markdown(self):
bgneal@128 84 """Returns a markdown representation of the smiley."""
bgneal@128 85 if self.image:
bgneal@128 86 return (u'![%s](%s "%s")' %
bgneal@128 87 (self.title, self.get_absolute_url(), self.title))
bgneal@128 88 return u''