Fixes #8030: Validate custom field names

netbox/extras/migrations/0066_customfield_name_validation.py

@@ -0,0 +1,18 @@
+import django.core.validators
+from django.db import migrations, models
+import re
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('extras', '0065_imageattachment_change_logging'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='customfield',
+            name='name',
+            field=models.CharField(max_length=50, unique=True, validators=[django.core.validators.RegexValidator(flags=re.RegexFlag['IGNORECASE'], message='Only alphanumeric characters and underscores are allowed.', regex='^[a-z0-9_]+$')]),
+        ),
+    ]