feat: add a relation to an issue (#1995)

* feat: add issue relation to an issue

* fix: deleted the migration file

* fix: changed link to relates to in choice fields

* fix: added the migration file

* fix: changed migration file

* fix: project id issue fixed

* fix: added issue in the payload

* fix: changed the query param for blocker

apiserver/plane/db/migrations/0043_alter_analyticview_created_by_and_more.py

@@ -0,0 +1,63 @@
+# Generated by Django 4.2.3 on 2023-09-12 07:29
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+from plane.db.models import IssueRelation
+from sentry_sdk import capture_exception
+import uuid
+
+
+def create_issue_relation(apps, schema_editor):
+    try:
+        IssueBlockerModel = apps.get_model("db", "IssueBlocker")
+        updated_issue_relation = []
+        for blocked_issue in IssueBlockerModel.objects.all():
+            updated_issue_relation.append(
+                IssueRelation(
+                    issue_id=blocked_issue.block_id,
+                    related_issue_id=blocked_issue.blocked_by_id,
+                    relation_type="blocked_by",
+                    project_id=blocked_issue.project_id,
+                    workspace_id=blocked_issue.workspace_id,
+                    created_by_id=blocked_issue.created_by_id,
+                    updated_by_id=blocked_issue.updated_by_id,
+                )
+            )
+        IssueRelation.objects.bulk_create(updated_issue_relation, batch_size=100)
+    except Exception as e:
+        print(e)
+        capture_exception(e)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('db', '0042_alter_analyticview_created_by_and_more'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='IssueRelation',
+            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')),
+                ('id', models.UUIDField(db_index=True, default=uuid.uuid4, editable=False, primary_key=True, serialize=False, unique=True)),
+                ('relation_type', models.CharField(choices=[('duplicate', 'Duplicate'), ('relates_to', 'Relates To'), ('blocked_by', 'Blocked By')], default='blocked_by', max_length=20, verbose_name='Issue Relation Type')),
+                ('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')),
+                ('issue', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='issue_relation', to='db.issue')),
+                ('project', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='project_%(class)s', to='db.project')),
+                ('related_issue', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='issue_related', to='db.issue')),
+                ('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='workspace_%(class)s', to='db.workspace')),
+            ],
+            options={
+                'verbose_name': 'Issue Relation',
+                'verbose_name_plural': 'Issue Relations',
+                'db_table': 'issue_relations',
+                'ordering': ('-created_at',),
+                'unique_together': {('issue', 'related_issue')},
+            },
+        ),
+        migrations.RunPython(create_issue_relation),
+    ]

apiserver/plane/db/models/__init__.py

@@ -32,6 +32,7 @@ from .issue import (
     IssueAssignee,
     Label,
     IssueBlocker,
+    IssueRelation,
     IssueLink,
     IssueSequence,
     IssueAttachment,

apiserver/plane/db/models/issue.py

@@ -180,6 +180,37 @@ class IssueBlocker(ProjectBaseModel):
         return f"{self.block.name} {self.blocked_by.name}"
 
 
+class IssueRelation(ProjectBaseModel):
+    RELATION_CHOICES = (
+        ("duplicate", "Duplicate"),
+        ("relates_to", "Relates To"),
+        ("blocked_by", "Blocked By"),
+    )
+        
+    issue = models.ForeignKey(
+        Issue, related_name="issue_relation", on_delete=models.CASCADE
+    )
+    related_issue = models.ForeignKey(
+        Issue, related_name="issue_related", on_delete=models.CASCADE
+    )
+    relation_type = models.CharField(
+        max_length=20,
+        choices=RELATION_CHOICES,
+        verbose_name="Issue Relation Type",
+        default="blocked_by",
+    )
+
+    class Meta:
+        unique_together = ["issue", "related_issue"]
+        verbose_name = "Issue Relation"
+        verbose_name_plural = "Issue Relations"
+        db_table = "issue_relations"
+        ordering = ("-created_at",)
+
+    def __str__(self):
+        return f"{self.issue.name} {self.related_issue.name}"    
+
+
 class IssueAssignee(ProjectBaseModel):
     issue = models.ForeignKey(
         Issue, on_delete=models.CASCADE, related_name="issue_assignee"