use uuid in tickets

core/tickets/models.py

@@ -2,7 +2,7 @@ from django.db import models
 from django_softdelete.models import SoftDeleteModel
 
 from inventory.models import Event
-from django.db.models.signals import post_save
+from django.db.models.signals import post_save, pre_save
 from django.dispatch import receiver
 
 STATE_CHOICES = (
@@ -25,10 +25,14 @@ STATE_CHOICES = (
 
 class IssueThread(SoftDeleteModel):
     id = models.AutoField(primary_key=True)
+    uuid = models.CharField(max_length=255, unique=True, null=False, blank=False)
     name = models.CharField(max_length=255)
     assigned_to = models.CharField(max_length=255, null=True)
     manually_created = models.BooleanField(default=False)
 
+    def short_uuid(self):
+        return self.uuid[:8]
+
     @property
     def state(self):
         try:
@@ -49,6 +53,13 @@ class IssueThread(SoftDeleteModel):
         ]
 
 
+@receiver(pre_save, sender=IssueThread)
+def set_uuid(sender, instance, **kwargs):
+    import uuid
+    if instance.uuid is None or instance.uuid == '':
+        instance.uuid = str(uuid.uuid4())
+
+
 @receiver(post_save, sender=IssueThread)
 def create_issue_thread(sender, instance, created, **kwargs):
     if created: