I tried to create a flag, however, I had the same results.
To solve this, I have created a module.
note: to make tests I installed the "Flag Bookmark" module.
file test_api.info.yml.
name: Test API
type: module
description: Custom RESTful API module with GET/POST/PUT/DELETE etc.. method examples.
author: Minnur Yunusov
core: 8.x
file test_api.routing.yml.
# Test API endpoints
test_api.get:
path: 'my-api/get.json'
defaults: { _controller: '\Drupal\test_api\Controller\TestAPIController::get_example' }
methods: [GET]
requirements:
_access: 'TRUE'
test_api.put:
path: 'my-api/put.json'
defaults: { _controller: '\Drupal\test_api\Controller\TestAPIController::put_example' }
methods: [PUT]
requirements:
_access: 'TRUE'
test_api.post:
path: 'my-api/post.json'
defaults: { _controller: '\Drupal\test_api\Controller\TestAPIController::post_example' }
methods: [POST]
requirements:
_access: 'TRUE'
test_api.delete:
path: 'my-api/delete.json'
defaults: { _controller: '\Drupal\test_api\Controller\TestAPIController::delete_example' }
methods: [DELETE]
requirements:
_access: 'TRUE'
we create the following directories and file TestAPIController.php
src/Controller/TestAPIController.php
<?php
/**
* @file
* Contains \Drupal\test_api\Controller\TestAPIController.
*/
namespace Drupal\test_api\Controller;
use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\JsonResponse;
use Drupal\user\Entity\User;
/**
* Controller routines for test_api routes.
*/
class TestAPIController extends ControllerBase {
/**
* Callback for `my-api/get.json` API method.
*/
public function get_example( Request $request ) {
$response['data'] = 'Some test data to return';
$response['method'] = 'GET';
return new JsonResponse( $response );
}
/**
* Callback for `my-api/put.json` API method.
*/
public function put_example( Request $request ) {
$response['data'] = 'Some test data to return';
$response['method'] = 'PUT';
return new JsonResponse( $response );
}
/**
* Callback for `my-api/post.json` API method.
*/
public function post_example( Request $request ) {
// This condition checks the `Content-type` and makes sure to
// decode JSON string from the request body into array.
if ( 0 === strpos( $request->headers->get( 'Content-Type' ), 'application/json' ) ) {
$data = json_decode( $request->getContent(), TRUE );
$request->request->replace( is_array( $data ) ? $data : [] );
}
//get value json
$flag_id= $data["flag_id"];
$entity_type= $data["entity_type"];
$entity_id = $data["entity_id"];
$uid= $data["uid"];
$created = REQUEST_TIME;
//get user
$user= User::load($uid);
//get field uuid
$user_uuid= $user->get('uuid')->value;
//add entity_id to the field field uuid (unique value);
$user_uuid= $user_uuid.'-'.$data["entity_id"];
$fields=array(
'flag_id' => $flag_id,
'uuid' =>$user_uuid, //unique value
'entity_type' =>$entity_type,
'entity_id' => $entity_id,
'uid' =>$uid,
'global' =>0,
'created' => $created
);
if ($data["flag_action"]=='flag') {
//verify if exists record
$sql="select * from {flagging} where entity_type ='$entity_type' and entity_id=$entity_id and flag_id='$flag_id' and uid=$uid ";
//execute query
$connection = \Drupal::database();
$result = $connection->query($sql);
$result=$result->fetchAll();
//if not exists record, create flag
if (count($result)>0) {
$response['¿Flag exists?'] = 'true';
}
else {
$resultado= db_insert('flagging')
->fields($fields)
->execute();
$response['newflag'] = $resultado;
}
$response['data'] = $data;
}
else if ($data["flag_action"]=='unflag') {
//verify if exits record
$sql="select * from {flagging} where entity_type ='$entity_type' and entity_id=$entity_id and flag_id='$flag_id' and uid=$uid ";
//execute query
$connection = \Drupal::database();
$result = $connection->query($sql);
$result=$result->fetchAll();
//if exists record, delete flag
if (count($result)>0) {
$num_deleted = db_delete('flagging')
->condition('entity_type', $entity_type)
->condition('entity_id', $entity_id)
->condition('flag_id', $flag_id)
->condition('uid', $uid)
->execute();
$response['¿Delete flag?'] = 'true';
}
else {
$response['¿Flag exists?'] = 'false';
}
$response['data'] = $data;
}
/*
//send json example
//change "bookmark" by "my_flag"
{
"entity_id":31,
"entity_type":"node",
"flag_id": "bookmark",
"uid": 1,
"flag_action": "flag"
}
*/
return new JsonResponse( $response );
}
/**
* Callback for `my-api/delete.json` API method.
*/
public function delete_example( Request $request ) {
$response['data'] = 'Some test data to return';
$response['method'] = 'DELETE';
return new JsonResponse( $response );
}
}
Note: in the tests change "bookmark" by "my_flag"
test:
url: http://jeremiselxi.260mb.net/drupal8/my-api/post.json
method:post;
headers:
Content-type: application/json
X-CSRF-Token: token()
note: this token is obtained through the GET method to the url
localhost/session/token
create flag
{
"entity_id":34,
"entity_type":"node",
"flag_id": "bookmark",
"uid": 1,
"flag_action": "flag"
}
result:
200 OK
Headers
{
"newflag": "22",
"data": {
"entity_id": 34,
"entity_type": "node",
"flag_id": "bookmark",
"uid": 1,
"flag_action": "flag"
}
}
note: If the flag does not exist, then create the flag
"newflag": "22"
else
"¿Flag exists?": "true"
create unflag
{
"entity_id":34,
"entity_type":"node",
"flag_id": "bookmark",
"uid": 1,
"flag_action": "unflag"
}
result:
200 OK
Headers
{
"¿Delete flag?": "true",
"data": {
"entity_id": 34,
"entity_type": "node",
"flag_id": "bookmark",
"uid": 1,
"flag_action": "unflag"
}
}
note: If the flag exists, then delete the flag
"¿Delete flag?": "true"
else
"¿Flag exists?": "false",
