🐛 [open-formulieren/open-forms#4772] Fix select component with int va…

…lues

because Select components do not have a dataType set, formio will try to cast it to other types if possible, which causes issues when submitting the data to the backend. For that reason we set the value to string to avoid this unwanted normalization

src/formio/components/Select.js

@@ -7,6 +7,14 @@ import {applyPrefix} from '../utils';
  * Extend the default select field to modify it to our needs.
  */
 class Select extends Formio.Components.components.select {
+  constructor(component, options, data) {
+    super(component, options, data);
+    // Fix for https://github.com/open-formulieren/open-forms/issues/4772
+    // ensure the datatype is always set to string to avoid formio casting it to other
+    // types (such as integer)
+    component.dataType = 'string';
+  }
+
   get inputInfo() {
     const info = super.inputInfo;
     // change the default CSS classes