Schema should be optional

netbox/dcim/forms/model_forms.py

@@ -409,6 +409,7 @@ class DeviceTypeForm(NetBoxModelForm):
 class ModuleTypeProfileForm(NetBoxModelForm):
     schema = JSONField(
         label=_('Schema'),
+        required=False,
         help_text=_("Enter a valid JSON schema to define supported attributes.")
     )
     comments = CommentField()

netbox/dcim/migrations/0204_moduletypeprofile.py

@@ -25,7 +25,7 @@ class Migration(migrations.Migration):
                 ('description', models.CharField(blank=True, max_length=200)),
                 ('comments', models.TextField(blank=True)),
                 ('name', models.CharField(max_length=100, unique=True)),
-                ('schema', models.JSONField()),
+                ('schema', models.JSONField(blank=True, null=True)),
                 ('tags', taggit.managers.TaggableManager(through='extras.TaggedItem', to='extras.Tag')),
             ],
             options={

netbox/dcim/models/modules.py

@@ -33,6 +33,8 @@ class ModuleTypeProfile(PrimaryModel):
         unique=True
     )
     schema = models.JSONField(
+        blank=True,
+        null=True,
         verbose_name=_('schema')
     )
 
@@ -50,12 +52,13 @@ class ModuleTypeProfile(PrimaryModel):
         super().clean()
 
         # Validate the schema definition
-        try:
-            JSONSchemaValidator.check_schema(self.schema)
-        except SchemaError as e:
-            raise ValidationError({
-                'schema': _("Invalid schema: {error}").format(error=e)
-            })
+        if self.schema:
+            try:
+                JSONSchemaValidator.check_schema(self.schema)
+            except SchemaError as e:
+                raise ValidationError({
+                    'schema': _("Invalid schema: {error}").format(error=e)
+                })
 
 
 class ModuleType(ImageAttachmentsMixin, PrimaryModel, WeightMixin):