add feed in / out button page and also button to redirect to button page

backend/apps/farms/migrations/0013_kandang_feed_in_button_url.py

@@ -0,0 +1,15 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("farms", "0012_cycle_feed_initial_balance_date"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="kandang",
+            name="feed_in_button_url",
+            field=models.URLField(blank=True, default="", max_length=500),
+        ),
+    ]

backend/apps/farms/migrations/0014_kandang_feed_in_button_urls.py

@@ -0,0 +1,29 @@
+from django.db import migrations, models
+
+
+def migrate_single_url_to_list(apps, schema_editor):
+    Kandang = apps.get_model("farms", "Kandang")
+    for kandang in Kandang.objects.exclude(feed_in_button_url="").exclude(feed_in_button_url__isnull=True):
+        url = (kandang.feed_in_button_url or "").strip()
+        if url:
+            kandang.feed_in_button_urls = [{"label": "", "url": url}]
+            kandang.save(update_fields=["feed_in_button_urls"])
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("farms", "0013_kandang_feed_in_button_url"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="kandang",
+            name="feed_in_button_urls",
+            field=models.JSONField(blank=True, default=list),
+        ),
+        migrations.RunPython(migrate_single_url_to_list, migrations.RunPython.noop),
+        migrations.RemoveField(
+            model_name="kandang",
+            name="feed_in_button_url",
+        ),
+    ]