kb: add default limit (#39477)

combo/apps/kb/migrations/0002_auto_20200203_1137.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.17 on 2020-02-03 10:37
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('kb', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='latestpageupdatescell',
+            name='limit',
+            field=models.PositiveSmallIntegerField(default=10, verbose_name='Maximum number of entries'),
+        ),
+    ]

combo/apps/kb/models.py

@@ -29,7 +29,7 @@ class LatestPageUpdatesCell(CellBase):
         Page, on_delete=models.SET_NULL, null=True, blank=True,
         verbose_name=_('Root Page'), related_name='kb_latest_page_updates_cell_root_page')
     limit = models.PositiveSmallIntegerField(
-        _('Maximum number of entries'), null=True, blank=True)
+        _('Maximum number of entries'), default=10)
 
     template_name = 'combo/latest-page-updates-cell.html'