.

longs/migrations/0016_auto_20210214_2301.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.1.3 on 2021-02-14 23:01
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('longs', '0015_auto_20210214_2028'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='longseriesimage',
+            options={'ordering': ['position']},
+        ),
+    ]

longs/models.py

@@ -223,7 +223,7 @@ class LongSeries(models.Model):
     def get_image_urls(self, feedback=False):
         images = [
             "http://penracourses.org.uk{}".format(i.image.url)
-            for i in self.images.all()
+            for i in self.images.order_by("position")
         ]
 
         return ",".join(images)