NEW SearchableDropdownField

lang/en.yml

@@ -141,6 +141,11 @@ en:
     IsNullLabel: 'Is Null'
   SilverStripe\Forms\NumericField:
     VALIDATION: "'{value}' is not a number, only numbers can be accepted for this field"
+  SilverStripe\Forms\SearchableDropdownTrait:
+    SELECT: 'select'
+    TYPE_TO_SEARCH: 'type to search'
+    CONJUNCTIVE: ' or '
+    DOTS: '...'
   SilverStripe\Forms\TextField:
     VALIDATEMAXLENGTH: 'The value for {name} must not exceed {maxLength} characters in length'
   SilverStripe\Forms\TimeField:

src/Forms/SearchableDropdownField.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace SilverStripe\Forms;
+
+use SilverStripe\Forms\DropdownField;
+
+class SearchableDropdownField extends DropdownField
+{
+    use SearchableDropdownTrait;
+
+    // This needs to be defined on the class, not the trait, or else a there is a PHP error
+    protected $schemaComponent = 'SearchableDropdownField';
+
+    protected function init(): void
+    {
+        // noop
+    }
+}