Add merged_to information to ticket

helpdesk/migrations/0033_ticket_merged_to.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.13 on 2020-10-27 17:14
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('helpdesk', '0032_kbitem_enabled'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='ticket',
+            name='merged_to',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='merged_tickets', to='helpdesk.Ticket', verbose_name='merged to'),
+        ),
+    ]

helpdesk/models.py

@@ -569,6 +569,15 @@ class Ticket(models.Model):
         verbose_name=_('Knowledge base item the user was viewing when they created this ticket.'),
     )
 
+    merged_to = models.ForeignKey(
+        'self',
+        verbose_name=_('merged to'),
+        related_name='merged_tickets',
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True
+    )
+
     @property
     def time_spent(self):
         """Return back total time spent on the ticket. This is calculated value