[react]The language of the form is changed after clicking the submit button (#1309)

Author: illiakovalenko

packages/sitecore-jss-react-forms/src/components/form.tsx

@@ -23,6 +23,7 @@ export interface ErrorComponentProps {
 
 export interface FormProps {
   form: SitecoreForm;
+  language?: string;
   fieldFactory?: FieldFactory;
   sitecoreApiHost: string;
   sitecoreApiKey: string;
@@ -95,7 +96,9 @@ export class Form extends Component<FormProps, FormState & FieldStateCollection>
       return (<div>Form data invalid. Forget to set the rendering contents resolver?</div>);
     }
 
-    const action = `${this.props.sitecoreApiHost}/api/jss/formbuilder?fxb.FormItemId=${form.metadata.itemId}&fxb.HtmlPrefix=${form.htmlPrefix}&sc_apikey=${this.props.sitecoreApiKey}&sc_itemid=${form.contextItemId}`;
+    const qsLanguage = this.props.language ? `&sc_lang=${this.props.language}` : '';
+
+    const action = `${this.props.sitecoreApiHost}/api/jss/formbuilder?fxb.FormItemId=${form.metadata.itemId}&fxb.HtmlPrefix=${form.htmlPrefix}&sc_apikey=${this.props.sitecoreApiKey}&sc_itemid=${form.contextItemId}${qsLanguage}`;
 
     this._tracker.setFormData(form.formItemId.value, form.formSessionId.value, form.metadata.isTrackingEnabled);