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annotate smiley/models.py @ 917:0365fdbb4d78

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Fix app conflict with messages. Django's messages app label conflicts with our messages app. We can't easily rename our label as that will make us rename database tables. Since our app came first we'll just customize Django messages label. For Django 1.7.7 upgrade.
author Brian Neal <bgneal@gmail.com>
date Mon, 06 Apr 2015 20:02:25 -0500
parents 7429c98c8ece
children e14f54f16dbc
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@613 8 from django.contrib.sites.models import Site
bgneal@123 9
bgneal@128 10 CACHE_TIMEOUT = 60 * 60 # seconds
gremmie@1 11
gremmie@1 12
gremmie@1 13 class SmileyManager(models.Manager):
gremmie@1 14
gremmie@1 15 def get_smiley_map(self):
bgneal@128 16 """
bgneal@211 17 Returns a dictionary, the keys are smiley codes.
bgneal@211 18 The values are the HTML representations of the keys.
bgneal@128 19 The dictionary is cached.
bgneal@128 20 """
bgneal@123 21 map = cache.get('smiley_map')
bgneal@123 22 if map:
bgneal@123 23 return map
gremmie@1 24
bgneal@211 25 map = dict((s.code, s.html()) for s in self.all())
bgneal@123 26 cache.set('smiley_map', map, CACHE_TIMEOUT)
bgneal@123 27 return map
gremmie@1 28
bgneal@123 29 def get_smilies(self, extra=False):
bgneal@211 30 """
bgneal@211 31 Returns smiley model instances filtered by the extra flag.
bgneal@211 32 """
bgneal@123 33 key = 'smileys' if not extra else 'smileys_extra'
bgneal@123 34 smilies = cache.get(key)
bgneal@123 35 if smilies:
bgneal@123 36 return smilies
bgneal@123 37
bgneal@123 38 smilies = self.filter(is_extra=extra)
bgneal@123 39 cache.set(key, smilies, CACHE_TIMEOUT)
bgneal@123 40 return smilies
gremmie@1 41
bgneal@792 42 def get_smiley_regexes(self, relative_urls=True):
bgneal@211 43 """
bgneal@211 44 Returns a list of 2-tuples of the form: (regex, repl)
bgneal@211 45 where regex is a regular expression for a smiley and
bgneal@211 46 repl is the replacement image in Markdown format.
bgneal@792 47
bgneal@792 48 If relative_urls is true, the smiley images will use relative URLs. If
bgneal@792 49 False, absolute URLs will be used.
bgneal@792 50
bgneal@211 51 """
bgneal@792 52 key = 'smiley_regexes_rel' if relative_urls else 'smiley_regexes_abs'
bgneal@792 53 regexes = cache.get(key)
bgneal@211 54 if regexes:
bgneal@211 55 return regexes
bgneal@211 56
bgneal@211 57 regexes = [(re.compile(r"(^|\s|(?<=\s))%s(\s|$)" % re.escape(s.code)),
bgneal@792 58 r"\1%s\2" % s.markdown(relative_urls=relative_urls)) for s in self.all()]
bgneal@792 59 cache.set(key, regexes, CACHE_TIMEOUT)
bgneal@211 60 return regexes
bgneal@211 61
gremmie@1 62
gremmie@1 63 class Smiley(models.Model):
gremmie@1 64 image = models.ImageField(upload_to='smiley/images/')
gremmie@1 65 title = models.CharField(max_length=32)
gremmie@1 66 code = models.CharField(max_length=32)
bgneal@123 67 is_extra = models.BooleanField()
gremmie@1 68
gremmie@1 69 objects = SmileyManager()
gremmie@1 70
gremmie@1 71 class Meta:
gremmie@1 72 verbose_name_plural = 'Smilies'
gremmie@1 73 ordering = ('title', )
gremmie@1 74
gremmie@1 75 def __unicode__(self):
gremmie@1 76 return self.title
gremmie@1 77
gremmie@1 78 def get_absolute_url(self):
gremmie@1 79 return self.image.url
gremmie@1 80
gremmie@1 81 def html(self):
bgneal@128 82 """Returns a HTML img tag representation of the smiley."""
gremmie@1 83 if self.image:
bgneal@613 84 site = Site.objects.get_current()
bgneal@613 85 return (u'<img src="http://%s%s" alt="%s" title="%s" />' %
bgneal@613 86 (site.domain, self.get_absolute_url(), self.title, self.title))
gremmie@1 87 return u''
gremmie@1 88 html.allow_tags = True
gremmie@1 89
bgneal@792 90 def markdown(self, relative_urls=True):
bgneal@792 91 """Returns a markdown representation of the smiley.
bgneal@792 92
bgneal@792 93 If relative_urls is True, relative URLs will be generated. If False,
bgneal@792 94 absolute URLs will be used.
bgneal@792 95
bgneal@792 96 """
bgneal@128 97 if self.image:
bgneal@792 98 if relative_urls:
bgneal@792 99 return u'![%s](%s "%s")' % (self.title, self.image.url,
bgneal@792 100 self.title)
bgneal@792 101 else:
bgneal@792 102 site = Site.objects.get_current()
bgneal@792 103 return (u'![%s](http://%s%s "%s")' %
bgneal@792 104 (self.title, site.domain, self.image.url, self.title))
bgneal@128 105 return u''