Re: [Cakephp 3.2.5] Cannot match provided foreignKey

Hello Manuel,

In your tables there is no PRIMARY KEY defined. So, your tables should look like this

CREATE TABLE `articles` (

  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,

  `title` varchar(100) COLLATE utf8_unicode_ci NOT NULL,

  `user_id` bigint(20) unsigned NOT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1 ;

CREATE TABLE `users` (

  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,

  `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1 ;

and then your issue will be resolve.

On Thursday, March 24, 2016 at 3:43:58 PM UTC+5:30, Manuel Maurer wrote:

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 TABLE `articles` ADD FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE RESTRICT ON UPDATE 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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