Question

我正在开发的CakePHP 3应用程序中有一个奇怪的错误，我无法确定问题所在。应用程序和问题如下：

我有一份愿望清单
该愿望清单可以有许多愿望清单项目
我正在使用Angular / Ajax进行调用并删除WishlistItem
```
http://domain.com/wishlist_items/delete/219
```

这不起作用，它会返回以下错误：

array_merge(): Argument #2 is not an array 

/vendor/cakephp/cakephp/src/ORM/Association/DependentDeleteTrait.php 54

有问题的WishlistItemsController.php是：

public function delete($id = null) {
    $this->autoRender = false;

    $this->request->allowMethod(['post', 'delete']);
    $wishlistItem = $this->WishlistItems->get($id);

    if ($this->WishlistItems->delete($wishlistItem)) {
        echo json_encode(['message' => ['type' => 'success', 'text' => 'This wishlist item has been deleted successfully']]);
    }
    else {
        echo json_encode(['message' => ['type' => 'error', 'text' => 'This wishlist item could not be deleted']]);
    }
    return;
 }

愿望清单项目没有家属，错误来自此文件http://api.cakephp.org/3.0/source-class-Cake.ORM.Association.DependentDeleteTrait.html#19-57第54行

我的表格文件如下所示：

WishlistsTable.php

$this->hasMany('WishlistItems', [
    'foreignKey' => 'wishlist_id',
    'dependent' => true,
    'cascadeCallbacks' => true,
]);

==================================================

WishlistItemsTable.php

$this->addBehavior('Timestamp');
$this->addBehavior('Ratings.Ratable');
$this->belongsTo('Wishlists', [
    'foreignKey' => 'wishlist_id'
]);

$this->addBehavior('CounterCache', [
    'Wishlists' => ['items_count']
]);

当这个表没有任何依赖项时，我无法理解为什么使用cascadeDelete函数。

STACKSTRACE：

Whoops\Exception\ErrorException thrown with message "array_merge(): Argument #2 is not an array"

Stacktrace:
#15 Whoops\Exception\ErrorException in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/ORM/Association/DependentDeleteTrait.php:54
#14 Whoops\Run:handleError in /var/www/domain.com/dev/website/vendor/gourmet/whoops/src/Error/WhoopsHandler.php:27
#13 Gourmet\Whoops\Error\WhoopsHandler:_displayError in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/Error/BaseErrorHandler.php:139
#12 Cake\Error\BaseErrorHandler:handleError in <#unknown>:0
#11 array_merge in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/ORM/Association/DependentDeleteTrait.php:54
#10 Cake\ORM\Association\HasMany:cascadeDelete in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/ORM/AssociationCollection.php:273
#9 Cake\ORM\AssociationCollection:cascadeDelete in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/ORM/Table.php:1705
#8 Cake\ORM\Table:_processDelete in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/ORM/Table.php:1643
#7 Cake\ORM\Table:Cake\ORM\{closure} in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/Database/Connection.php:557
#6 Cake\Database\Connection:transactional in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/ORM/Table.php:1648
#5 Cake\ORM\Table:delete in /var/www/domain.com/dev/website/src/Controller/WishlistItemsController.php:139
#4 App\Controller\WishlistItemsController:delete in <#unknown>:0
#3 call_user_func_array in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/Controller/Controller.php:429
#2 Cake\Controller\Controller:invokeAction in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/Routing/Dispatcher.php:114
#1 Cake\Routing\Dispatcher:_invoke in /var/www/domain.com/dev/website/vendor/cakephp/cakephp/src/Routing/Dispatcher.php:87
#0 Cake\Routing\Dispatcher:dispatch in /var/www/domain.com/dev/website/webroot/index.php:37

Answer 1

如果您正在调用BelongsTo的表对象上确实只有delete()个关联，那么这样的控制流应该永远不会发生，因此需要从其他地方定义更多的关联。

鉴于Ratings.Ratable行为属于 dereuromark/cakephp-ratings ，我怀疑问题是为HasMany定义的条件行为添加到表中的关联：

<强> https://github.com/dereuromark/cakephp-ratings/.../Behavior/RatableBehavior.php#L85

$this->_table->hasMany('Ratings', [
        'className' => $this->_config['rateClass'],
        'foreignKey' => $this->_config['foreignKey'],
        'unique' => true,

        'conditions' => '', // <<<<<< There it is

        'fields' => '',
        'dependent' => true,
        //'table' => 'sandbox_ratings'
    ]
);

该值最终作为array_merge()中的第二个参数传递给DependentDeleteTrait::cascadeDelete()，因此错误。

所以，这是插件中的一个错误，我建议你报告它。作为一种快速解决方法，您可以覆盖表类中的条件，例如

$this->association('Ratings')->conditions([]);

CakePHP 3 - array_merge（）：参数＃2不是数组

1 个答案: