Validate URLs before adding

feeds/migrations/0004_alter_blocklist_url.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.1 on 2024-01-30 18:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('feeds', '0003_blocklist_active'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='blocklist',
+            name='url',
+            field=models.CharField(help_text='The URL to block.', max_length=2000, unique=True),
+        ),
+    ]