apps/sponsors/models.py

   1 from django.db import models
   2 from django.utils.translation import ugettext_lazy as _
   3 from django.template.loader import render_to_string
   4
   5 from sorl.thumbnail.fields import ImageWithThumbnailsField
   6 from sponsors.fields import JSONField
   7
   8
   9 class Sponsor(models.Model):
  10     name = models.CharField(_('name'), max_length=120)
  11     _description = models.CharField(_('description'), blank=True, max_length=255)
  12     logo = ImageWithThumbnailsField(
  13         _('logo'),
  14         upload_to='sponsors/sponsor/logo',
  15         thumbnail={
  16             'size': (120, 60),
  17             'extension': 'png',
  18             'options': ['upscale', 'pad', 'detail'],
  19         })
  20     url = models.URLField(_('url'), blank=True, verify_exists=False)
  21
  22     def __unicode__(self):
  23         return self.name
  24
  25     def description(self):
  26         if len(self._description):
  27             return self._description
  28         else:
  29             return self.name
  30
  31
  32 class SponsorPage(models.Model):
  33     name = models.CharField(_('name'), max_length=120)
  34     column_width = models.PositiveIntegerField(_('column width'), default=200)
  35     sponsors = JSONField(_('sponsors'), default={})
  36     _html = models.TextField(blank=True, editable=False)
  37
  38     def populated_sponsors(self):
  39         result = []
  40         for column in self.get_sponsors_value():
  41             result_group = {'name': column['name'], 'sponsors': []}
  42             sponsor_objects = Sponsor.objects.in_bulk(column['sponsors'])
  43             for sponsor_pk in column['sponsors']:
  44                 try:
  45                     result_group['sponsors'].append(sponsor_objects[sponsor_pk])
  46                 except KeyError:
  47                     pass
  48             result.append(result_group)
  49         return result
  50
  51     def html(self):
  52         return self._html
  53     html = property(fget=html)
  54
  55     def save(self, *args, **kwargs):
  56         self._html = render_to_string('sponsors/page.html', {
  57             'column_width': self.column_width,
  58             'sponsors': self.populated_sponsors(),
  59         })
  60         return super(SponsorPage, self).save(*args, **kwargs)
  61
  62     def __unicode__(self):
  63         return self.name
  64