Implement commit model and migration

Signed-off-by: JafarAkhondali <jafar.akhoondali@gmail.com>

Author: JafarAkhondali

vulnerabilities/migrations/0040_commit.py

@@ -0,0 +1,45 @@
+# Generated by Django 4.1.7 on 2023-07-05 15:01
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("vulnerabilities", "0039_alter_vulnerabilityseverity_scoring_system"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Commit",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+                    ),
+                ),
+                (
+                    "hash",
+                    models.CharField(blank=True, help_text="Hash of the commit", max_length=1024),
+                ),
+                (
+                    "chain_urls",
+                    models.JSONField(
+                        blank=True, default=list, help_text="List of URLS used to reach the commit"
+                    ),
+                ),
+                (
+                    "reference",
+                    models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="vulnerabilities.vulnerabilityreference",
+                    ),
+                ),
+            ],
+            options={
+                "ordering": ["reference_id"],
+            },
+        ),
+    ]

vulnerabilities/models.py

@@ -886,3 +886,33 @@ class ApiUser(UserModel):
 
     class Meta:
         proxy = True
+
+
+class Commit(models.Model):
+    """
+    Reference to a commit(s) that fixed the vulnerability
+    """
+
+    reference = models.OneToOneField(
+        VulnerabilityReference,
+        on_delete=models.CASCADE,
+    )
+
+    hash = models.CharField(
+        max_length=1024,
+        help_text="Hash of the commit",
+        blank=True,
+    )
+
+    chain_urls = models.JSONField(
+        default=list,
+        help_text="List of URLS used to reach the commit",
+        blank = True,
+    )
+
+    class Meta:
+        ordering = ["reference_id"]
+
+    def __str__(self):
+        reference_id = f" {self.reference_id}" if self.reference_id else ""
+        return f"{self.url}{reference_id}"