Consistently set 'id' in FormSchema

The URL to request the schema representation is the unique identifier.
We can't default to $request->getURL() since that's different for form submissions.

The schema.schema_url key is redundant, since the identifier is already contained on the top level 'id' key.
Keeping schema_url in a schema itself makes it less portable, particularly once we transition into
generic schemas which are not reliant on a particular record context (that's only contained in the schema_url)

This also fixes the issue of form schemas not refreshing after submit,
e.g. when form fields are added or removed.

Forms/Schema/FormSchema.php

@@ -26,7 +26,6 @@ class FormSchema {
 			'id' => $form->FormName(),
 			'action' => $form->FormAction(),
 			'method' => $form->FormMethod(),
-			'schema_url' => $schemaLink,
 			'attributes' => $form->getAttributes(),
 			'data' => [],
 			'fields' => [],

admin/client/src/state/schema/SchemaReducer.js

@@ -7,8 +7,7 @@ export default function schemaReducer(state = initialState, action = null) {
   switch (action.type) {
 
     case ACTION_TYPES.SET_SCHEMA: {
-      const id = action.payload.schema.schema_url;
-      return deepFreeze(Object.assign({}, state, { [id]: action.payload }));
+      return deepFreeze(Object.assign({}, state, { [action.payload.id]: action.payload }));
     }
 
     default:

admin/client/src/state/schema/tests/SchemaReducer-test.js

@@ -11,14 +11,17 @@ describe('schemaReducer', () => {
   describe('SET_SCHEMA', () => {
     it('should create a new form', () => {
       const initialState = { };
-      const serverResponse = { id: 'TestForm', schema_url: 'URL' };
+      const schema = {
+        id: 'MySchema',
+        schema: { id: 'TestForm' },
+      };
 
       const nextState = schemaReducer(initialState, {
         type: ACTION_TYPES.SET_SCHEMA,
-        payload: { schema: serverResponse },
+        payload: schema,
       });
 
-      expect(nextState.URL.schema.id).toBe('TestForm');
+      expect(nextState.MySchema).toBe(schema);
     });
   });
 });

admin/code/CampaignAdmin.php

@@ -98,13 +98,12 @@ class CampaignAdmin extends LeftAndMain implements PermissionProvider {
         $adminURL = Convert::raw2js(AdminRootController::admin_url());
 		$json = <<<JSON
 {
-	"id": "Form_EditForm",
+	"id": "{$adminURL}campaigns\/schema\/EditForm",
 	"schema": {
 		"name": "EditForm",
 		"id": "Form_EditForm",
 		"action": "schema",
 		"method": "GET",
-		"schema_url": "{$adminURL}campaigns\/schema\/EditForm",
 		"attributes": {
 			"id": "Form_EditForm",
 			"action": "{$adminURL}campaigns\/EditForm",
@@ -539,8 +538,9 @@ JSON;
 
 		// Configure form to respond to validation errors with form schema
 		// if requested via react.
-		$form->setValidationResponseCallback(function() use ($form) {
-			return $this->getSchemaResponse($form);
+		$form->setValidationResponseCallback(function() use ($form, $record) {
+			$schemaId = Controller::join_links($this->Link('schema/DetailEditForm'), $record->exists() ? $record->ID : '');
+			return $this->getSchemaResponse($form, $schemaId);
 		});
 
 		return $form;

admin/code/LeftAndMain.php

@@ -333,12 +333,13 @@ class LeftAndMain extends Controller implements PermissionProvider {
 	 * schema if X-Formschema-Request header is set.
 	 *
 	 * @param Form $form
+	 * @param String $id Optional, will default to the current request URL
 	 * @return HTTPResponse
 	 */
-	protected function getSchemaResponse($form) {
+	protected function getSchemaResponse($form, $id = null) {
 		$request = $this->getRequest();
 		if($request->getHeader('X-Formschema-Request')) {
-			$data = $this->getSchemaForForm($form);
+			$data = $this->getSchemaForForm($form, $id);
 			$response = new HTTPResponse(Convert::raw2json($data));
 			$response->addHeader('Content-Type', 'application/json');
 
@@ -355,10 +356,12 @@ class LeftAndMain extends Controller implements PermissionProvider {
 	 * based on the request data.
 	 *
 	 * @param Form $form
+	 * @param String $id Optional, will default to the current request URL
 	 * @return array
 	 */
-	protected function getSchemaForForm(Form $form) {
+	protected function getSchemaForForm(Form $form, $id = null) {
 		$request = $this->getRequest();
+		$id = $id ? $id : $request->getURL();
 		$return = null;
 
 		// Valid values for the "X-Formschema-Request" header are "schema" and "state".
@@ -373,7 +376,7 @@ class LeftAndMain extends Controller implements PermissionProvider {
 			$schemaParts = ['schema'];
 		}
 
-		$return = ['id' => $form->FormName()];
+		$return = ['id' => $id];
 
 		if (in_array('schema', $schemaParts)) {
 			$schemaLink = $this->getSchemaLinkForForm($form);
@@ -1302,10 +1305,11 @@ class LeftAndMain extends Controller implements PermissionProvider {
 
 		$message = _t('LeftAndMain.SAVEDUP', 'Saved.');
 		if($request->getHeader('X-Formschema-Request')) {
+			$schemaId = Controller::join_links($this->Link('schema/DetailEditForm'), $id);
 			// Ensure that newly created records have all their data loaded back into the form.
 			$form->loadDataFrom($record);
 			$form->setMessage($message, 'good');
-			$data = $this->getSchemaForForm($form);
+			$data = $this->getSchemaForForm($form, $schemaId);
 			$response = new HTTPResponse(Convert::raw2json($data));
 			$response->addHeader('Content-Type', 'application/json');
 		} else {

tests/forms/FormSchemaTest.php

@@ -20,7 +20,6 @@ class FormSchemaTest extends SapphireTest {
 			'id' => 'Form_TestForm',
 			'action' => 'Controller/TestForm',
 			'method' => 'POST',
-			'schema_url' => 'admin/mysection/schema',
 			'attributes' => [
 				'id' => 'Form_TestForm',
 				'action' => 'Controller/TestForm',
@@ -171,7 +170,6 @@ class FormSchemaTest extends SapphireTest {
 			'id' => 'Form_TestForm',
 			'action' => 'Controller/TestForm',
 			'method' => 'POST',
-			'schema_url' => 'admin/mysection/schema',
 			'attributes' => [
 				'id' => 'Form_TestForm',
 				'action' => 'Controller/TestForm',