feat: add initiative epic model (#2082)

apiserver/plane/ee/migrations/0021_initiativeepic_and_more.py

@@ -0,0 +1,45 @@
+# Generated by Django 4.2.17 on 2025-01-02 08:47
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('db', '0088_sticky_sort_order_workspaceuserlink'),
+        ('ee', '0020_rename_type_workspaceentityconnection_source_and_more'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='InitiativeEpic',
+            fields=[
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Created At')),
+                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='Last Modified At')),
+                ('deleted_at', models.DateTimeField(blank=True, null=True, verbose_name='Deleted At')),
+                ('id', models.UUIDField(db_index=True, default=uuid.uuid4, editable=False, primary_key=True, serialize=False, unique=True)),
+                ('sort_order', models.FloatField(default=65535)),
+                ('created_by', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='%(class)s_created_by', to=settings.AUTH_USER_MODEL, verbose_name='Created By')),
+                ('epic', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='initiative_epics', to='db.issue')),
+                ('initiative', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='initiative_epics', to='ee.initiative')),
+                ('updated_by', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='%(class)s_updated_by', to=settings.AUTH_USER_MODEL, verbose_name='Last Modified By')),
+                ('workspace', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='initiative_epics', to='db.workspace')),
+            ],
+            options={
+                'verbose_name': 'Initiative Epic',
+                'verbose_name_plural': 'Initiative Epics',
+                'db_table': 'initiative_epics',
+            },
+        ),
+        migrations.AddConstraint(
+            model_name='initiativeepic',
+            constraint=models.UniqueConstraint(condition=models.Q(('deleted_at__isnull', True)), fields=('initiative', 'epic'), name='initiative_epic_unique_initiative_epic_when_deleted_at_null'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='initiativeepic',
+            unique_together={('initiative', 'epic', 'deleted_at')},
+        ),
+    ]

apiserver/plane/ee/models/initiative.py

@@ -309,3 +309,33 @@ class InitiativeUserProperty(BaseModel):
     def __str__(self):
         """Return properties status of the initiative"""
         return str(self.user)
+
+
+class InitiativeEpic(BaseModel):
+    workspace = models.ForeignKey(
+        "db.Workspace", on_delete=models.CASCADE, related_name="initiative_epics"
+    )
+    initiative = models.ForeignKey(
+        "ee.Initiative", on_delete=models.CASCADE, related_name="initiative_epics"
+    )
+    epic = models.ForeignKey(
+        "db.Issue", on_delete=models.CASCADE, related_name="initiative_epics"
+    )
+    sort_order = models.FloatField(default=65535)
+
+    class Meta:
+        unique_together = ["initiative", "epic", "deleted_at"]
+        constraints = [
+            models.UniqueConstraint(
+                fields=["initiative", "epic"],
+                condition=models.Q(deleted_at__isnull=True),
+                name="initiative_epic_unique_initiative_epic_when_deleted_at_null",
+            )
+        ]
+        db_table = "initiative_epics"
+        verbose_name = "Initiative Epic"
+        verbose_name_plural = "Initiative Epics"
+
+    def __str__(self):
+        """Return epic of the initiative"""
+        return f"{self.initiative.name} {self.epic.name}"