general: add option to limit the number of displayed feed entries (#10389)

combo/data/migrations/0016_feedcell_limit.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('data', '0015_feedcell_title'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='feedcell',
+            name='limit',
+            field=models.PositiveSmallIntegerField(null=True, verbose_name='Maximum number of entries', blank=True),
+        ),
+    ]

combo/data/models.py

@@ -549,6 +549,8 @@ class LinkCell(CellBase):
 class FeedCell(CellBase):
     title = models.CharField(_('Title'), max_length=150, blank=True)
     url = models.URLField(_('URL'), blank=True)
+    limit = models.PositiveSmallIntegerField(_('Maximum number of entries'),
+            null=True, blank=True)
 
     template_name = 'combo/feed-cell.html'
 
@@ -569,6 +571,8 @@ class FeedCell(CellBase):
                 cache.set(cache_key, feed_content, 600)
         if feed_content:
             context['feed'] = feedparser.parse(feed_content)
+            if self.limit:
+                context['feed']['entries'] = context['feed']['entries'][:self.limit]
             if not self.title:
                 try:
                     self.title = context['feed']['feed'].title