[Cakephp 3.2.5] Cannot match provided foreignKey

['Manuel Maurer' via CakePHP]

Hello,

I am trying to upgrade some of my applications from Cake 2 to 3. To get 
used to the new version I tried a few simple things and for some strange 
reason I cannot get Associations to run...

In my mysql database I have two simple tables:

CREATE TABLE `articles` (
  `id` bigint(20) UNSIGNED NOT NULL,
  `title` varchar(100) COLLATE utf8_unicode_ci NOT NULL,
  `user_id` bigint(20) UNSIGNED NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

CREATE TABLE `users` (
  `id` bigint(20) UNSIGNED NOT NULL,
  `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

In a fresh copy of Cakephp 3.2.5 I added 3 files:

*src/Model/Table/UsersTable.php:*

<?php
namespace App\Model\Table;
use Cake\ORM\Table;

class UsersTable extends Table
{
    public function initialize(array $config){
    }
}


*src/Model/Table/ArticlesTable.php:*
<?php
namespace App\Model\Table;
use Cake\ORM\Table;

class ArticlesTable extends Table
{
    public function initialize(array $config){
        $this->belongsTo('Users');
    }
}


*src/Controller/ArticlesController.php:*
<?php
namespace App\Controller;

class ArticlesController extends AppController 
{
    public function index(){
        $tmp = $this->Articles->find('all')->contain(['Users']);
        var_dump($tmp);
        exit;
    }
}

My development system is running MariaDB 10.0.15 and PHP 7.0.4 on W7.

Finally I fire up http://test/articles and get this error:
* Cannot match provided foreignKey for "Users", got "(user_id)" but 
expected foreign key for "()" *


The last item in the stack trace is this:

Cake\ORM\Association\BelongsTo->_joinCondition 
CORE\src\ORM\Association.php, line 557


On the right hand side I get 
cakephp-3-2-5\vendor\cakephp\cakephp\src\ORM\Association.php:

            'finder' => $this->finder()
            ];
    
            if (!empty($options['foreignKey'])) {
                $joinCondition = $this->_joinCondition($options);
                if ($joinCondition) {
                    $options['conditions'][] = $joinCondition;
                }
            }


And in the arguments table:

[
        'aliasPath' => 'Users',
        'propertyPath' => 'user',
        'includeFields' => true,
        'foreignKey' => 'user_id',
        'conditions' => [],
        'fields' => [],
        'type' => 'LEFT',
        'table' => 'users',
        'finder' => 'all'
]


As a test I added a foreign key constraint to the database:


ALTER 
<http://localhost/phpmyadmin/url.php?url=http://dev.mysql.com/doc/refman/5.5/en/alter-table.html>
 
TABLE 
<http://localhost/phpmyadmin/url.php?url=http://dev.mysql.com/doc/refman/5.5/en/alter-table.html>
 
`articles` ADD FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE 
<http://localhost/phpmyadmin/url.php?url=http://dev.mysql.com/doc/refman/5.5/en/delete.html>
 
RESTRICT ON UPDATE 
<http://localhost/phpmyadmin/url.php?url=http://dev.mysql.com/doc/refman/5.5/en/update.html>
 
RESTRICT;


However, that did not have any effects (not that I expected any).

I also tried to specify the foreignKey, className etc. on the association, 
no change there. I even downgraded to php 5.6 on my linux dev box, that 
didn't help either.


Any suggestions?


Best regards,

Manuel

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