Experiments page.

[wolnelektury.git] / src / sponsors / models.py

diff --git a/src/sponsors/models.py b/src/sponsors/models.py
index 89b06ff..704b066 100644 (file)
--- a/src/sponsors/models.py
+++ b/src/sponsors/models.py
@@ -1,18 +1,16 @@
-# -*- coding: utf-8 -*-
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 import json
 import time
-from StringIO import StringIO
+from io import BytesIO
+from django.core.cache import cache
 from django.db import models
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.template.loader import render_to_string
 from PIL import Image
 
-from jsonfield import JSONField
 from django.core.files.base import ContentFile
-from ssify import flush_ssi_includes
 
 THUMB_WIDTH = 120
 THUMB_HEIGHT = 120
@@ -24,7 +22,7 @@ class Sponsor(models.Model):
     logo = models.ImageField(_('logo'), upload_to='sponsorzy/sponsor/logo')
     url = models.URLField(_('url'), blank=True)
 
-    def __unicode__(self):
+    def __str__(self):
         return self.name
 
     def description(self):
@@ -36,14 +34,17 @@ class Sponsor(models.Model):
 
 class SponsorPage(models.Model):
     name = models.CharField(_('name'), max_length=120)
-    sponsors = JSONField(_('sponsors'), default={})
+    sponsors = models.TextField(_('sponsors'), default='{}')
     _html = models.TextField(blank=True, editable=False)
     sprite = models.ImageField(upload_to='sponsorzy/sprite', blank=True)
 
+    def get_sponsors_json(self):
+        return json.loads(self.sponsors or '[]')
+
     def populated_sponsors(self):
         result = []
         offset = 0
-        for column in self.sponsors:
+        for column in self.get_sponsors_json():
             result_group = {'name': column['name'], 'sponsors': []}
             sponsor_objects = Sponsor.objects.in_bulk(column['sponsors'])
             for sponsor_pk in column['sponsors']:
@@ -52,12 +53,13 @@ class SponsorPage(models.Model):
                     offset -= THUMB_HEIGHT
                 except KeyError:
                     pass
-            result.append(result_group)
+            if result_group['sponsors']:
+                result.append(result_group)
         return result
 
     def render_sprite(self):
         sponsor_ids = []
-        for column in self.sponsors:
+        for column in self.get_sponsors_json():
             sponsor_ids.extend(column['sponsors'])
         sponsors = Sponsor.objects.in_bulk(sponsor_ids)
         sprite = Image.new('RGBA', (THUMB_WIDTH, len(sponsors) * THUMB_HEIGHT))
@@ -66,16 +68,16 @@ class SponsorPage(models.Model):
             if simg.size[0] > THUMB_WIDTH or simg.size[1] > THUMB_HEIGHT:
                 size = (
                     min(THUMB_WIDTH,
-                        simg.size[0] * THUMB_HEIGHT / simg.size[1]),
+                        round(simg.size[0] * THUMB_HEIGHT / simg.size[1])),
                     min(THUMB_HEIGHT,
-                        simg.size[1] * THUMB_WIDTH / simg.size[0])
+                        round(simg.size[1] * THUMB_WIDTH / simg.size[0]))
                 )
                 simg = simg.resize(size, Image.ANTIALIAS)
             sprite.paste(simg, (
-                    (THUMB_WIDTH - simg.size[0]) / 2,
-                    i * THUMB_HEIGHT + (THUMB_HEIGHT - simg.size[1]) / 2,
+                    round((THUMB_WIDTH - simg.size[0]) / 2),
+                    round(i * THUMB_HEIGHT + (THUMB_HEIGHT - simg.size[1]) / 2),
                     ))
-        imgstr = StringIO()
+        imgstr = BytesIO()
         sprite.save(imgstr, 'png')
 
         if self.sprite:
@@ -88,20 +90,14 @@ class SponsorPage(models.Model):
     html = property(fget=html)
 
     def save(self, *args, **kwargs):
-        if isinstance(self.sponsors, basestring):
-            # Walkaround for weird jsonfield 'no-decode' optimization.
-            self.sponsors = json.loads(self.sponsors)
         self.render_sprite()
         self._html = render_to_string('sponsors/page.html', {
             'sponsors': self.populated_sponsors(),
             'page': self
         })
         ret = super(SponsorPage, self).save(*args, **kwargs)
-        self.flush_includes()
+        cache.delete('sponsor_page:' + self.name)
         return ret
 
-    def flush_includes(self):
-        flush_ssi_includes(['/sponsors/page/%s.html' % self.name])
-
-    def __unicode__(self):
+    def __str__(self):
         return self.name