Add content_object index to Link

CHANGELOG

@@ -1,3 +1,7 @@
+Unreleased
+
+* Add index to Link (David Venhoff, #202)
+
 2.3.0 (2023-12-27)
 
 * Fix encoding of utf-8 domain names (Timo Brembeck, #190)

linkcheck/migrations/0011_link_add_content_object_index.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.1.3 on 2024-11-25 18:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('linkcheck', '0010_url_add_error_message'),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name='link',
+            index=models.Index(fields=['content_type', 'object_id'], name='content_type_and_object_id'),
+        ),
+    ]

linkcheck/models.py

@@ -525,6 +525,11 @@ class Link(models.Model):
     text = models.CharField(max_length=256, default='')
     ignore = models.BooleanField(default=False)
 
+    class Meta:
+        indexes = [
+            models.Index(fields=["content_type", "object_id"], name="content_type_and_object_id"),
+        ]
+
     @property
     def display_url(self):
         # when page /test/ has a anchor link to /test/#anchor, we display it