Add verification that name is not taken or nul

app/controllers/catalog_controller.rb

@@ -111,13 +111,17 @@ def servicetemplate_copy_cancel
     replace_right_cell
   end
 
-  def servicetemplate_copy_saved()
+  def servicetemplate_copy_saved
       add_flash(_("Copy of a Service Catalog Item was successfully saved"))
       @sb[:action] = @edit = @record = nil
       @in_a_form = false
       replace_right_cell
   end
 
+  def servicetemplates_names
+    render :json => {:names => ServiceTemplate.all.pluck(:name)}
+  end
+
   def atomic_st_edit
     # reset the active tree back to :sandt_tree, it was changed temporairly to display automate entry point tree in a popup div
     self.x_active_tree = 'sandt_tree'

app/javascript/components/copy-catalog-form/copy-catalog-form.schema.js

@@ -1,10 +1,28 @@
 import { componentTypes } from '@data-driven-forms/react-form-renderer';
+import debouncePromise from '../../helpers/promise-debounce';
+import { http } from '../../http_api';
+
+export const asyncValidator = value =>
+  http.get('/catalog/servicetemplates_names')
+    .then((json) => {
+      if (json.names.includes(value)) {
+        return __('Name has already been taken');
+      }
+      if (value === '' || value === undefined) {
+        return __("Name can't be blank");
+      }
+      return undefined;
+    });
+const asyncValidatorDebounced = debouncePromise(asyncValidator);
 
 function createSchema() {
   const fields = [
     {
       component: componentTypes.TEXT_FIELD,
       name: 'name',
+      validate: [
+        value => asyncValidatorDebounced(value),
+      ],
       label: __('Name'),
       maxLength: 40,
     }];

config/routes.rb

@@ -289,6 +289,7 @@
         ot_edit
         ot_orchestration_managers
         ot_show
+        servicetemplates_names
         show
       ),
       :post => %w(