Question

我正在尝试使用->delete()通过关联模型删除数据库条目，但该条目不会被删除。

我尝试将表单从POST更改为DELETE，但这没有任何区别。围绕SO的研究也没有产生任何结果。

首选我希望避免使用似乎有用的Model::destroy($ids)，。

路线方法：

// Delete an asset
public function getDelete($id)
{
    // Try to find the asset, throw exception if not found
    $asset = Asset::findOrFail($id);

    $this->layout->title = 'Delete an asset';
    $this->layout->content = View::make('asset.delete')
            ->with('assetID', $id);
}

// Delete the actual asset
public function postDelete()
{
    $id = Input::get('AID');

    // Try to find the asset, throw exception if not found
    $asset = Asset::findOrFail($id);

    // Attempt to delete it
    if($asset->delete())
    {
        return Redirect::route('asset')
                ->with('success', 'The asset has been deleted succesfully!');
    }

    return Redirect::route('asset')
            ->with('failure', 'The asset could not be deleted. Please try again.');
}

路线：

/* Route to deleting an asset
 * Shorthand: URL::route('deleteAsset')
 * Uses AssetController::getDelete
 */
Route::get('/asset/delete/{id}', array(
    'as' => 'deleteAsset',
    'uses' => 'AssetController@getDelete'
));

/* Route to actually deleting an asset
 * Shorthand: URL::route('deleteAssetPost')
 * Uses AssetController::postDelete
 */
Route::delete('/asset/delete/', array(
    'as' => 'deleteAssetPost',
    'uses' => 'AssetController@postDelete'
));

模特：

class Asset extends Eloquent
{
    public $timestamps = false;

    protected $table = 'Asset';

    protected $primaryKey = 'AID';

    protected $fillable = array('ACID', 'AKID', 'AATID', 'APurchaseDate');

    // Retrieve the customer's name associated with the asset
    public function customer()
    {
        return $this->hasOne('Customer', 'CID', 'ACID');
    }

    // Retrieve the asset type that is associated with the asset
    public function assetType()
    {
        return $this->hasOne('AssetType', 'ATID', 'AATID');
    }

    // Get the customer name
    public function getCustomerName()
    {
        return $this->customer()->first()->CName;
    }

    // Get the asset type name
    public function getAssetTypeName()
    {
        return $this->assetType()->first()->ATName;
    }

    // Get the associated key
    public function getKey()
    {
        return $this->AKID === -1 ? 'nvt' : $this->AKID;
    }

    // Get the purchase date in readable form
    public function getPurchaseDate($format = 'd-m-Y')
    {
        return date($format, strtotime($this->APurchaseDate));
    }
}

根据控制器，删除成功并给出成功消息。

不会抛出任何错误。

[编辑]

有谁知道我在这里缺少什么来使这项工作？

记录查询后，使用$asset->delete()执行以下查询：

select * from `Asset` where `AID` = ? limit 1
delete from `Asset` where `AID` = ?

我用Asset::destroy($id)尝试了同样的事情，其结果是：

select * from `Asset` where `AID` = ? limit 1
select * from `Asset` where `AID` in (?)
delete from `Asset` where `AID` = ?

Answer 1

在聊天中进行了一些讨论后，我们意识到代码在模型上定义了一个getKey()方法，该方法用于特定于域的目的。然而，这实际上是Eloquent在所有模型上定义的方法，并且它使用它非常重要。在这种情况下，Eloquent的delete方法调用getKey()来确定模型的ID。

非错误的原因是虽然删除本身无法删除（因为它试图删除ID为'nvt'的模型），但从技术上讲，它并没有做任何值得错误的事情。完全有效的代码/ SQl：DELETE FROM `table` WHERE `id` = 'nvt';

无法使用Eloquent删除Laravel中的模型

1 个答案: