我无法在Laravel

时间：2016-07-09 22:23:54

标签： php mysql laravel laravel-5.2

我正在与Laravel合作开展业余爱好项目（店铺管理）。我试图使用DB :: beginTransaction（）和DB :: rollback（），但它无法正常工作。根据我的代码，我认为数据库中不应填充任何条目。

我已经搜索了可能性，但无法找到任何解决方案。 而且，我的MySQL表是InnoDB

这是我的Shop Controller文件。

    class shopController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
    }
    public function getView()
    {
        if(Auth::user()->shop_status==0)
            return View::make('shop')->with('name',json_encode(Auth::user()->Vendor_Detail()->get(['first_name', 'last_name'])));
        else
            return redirect('/home');
    }

    public function addShop(ShopDataRequest $request){
    //get the logged in vendor's model instance. Auth uses Vendor model
            $vendor = Auth::user();
    //create new Shop Model
            $shop = new Shop;
            $shop->name = $request['shop_name'];
            $shop->address = $request->addressLine1;
            $shop->pincode = $request->pincode;
            $shop->phone = $request->phone;
            $shop->shop_type = $request->shop_type;

        DB::beginTransaction();
        try{            
             //save shop details
            $vendor->Shops()->save($shop);
            //throw custom Exception
            throw new \Exception('User not created for account');
        }

        catch (Exception $e){
        //catch exception and rollback
            DB::rollback();
        }


    }
}

型号：
1）购物：

namespace App\Models;

use Illuminate\Foundation\Auth\User as Authenticatable;

class Shop extends Authenticatable
{
    protected $connection = 'vendor';
    protected $fillable = [
        'shop_id','vendor_id','name','address','pincode','phone','shop_type'
    ];

    public function Vendor(){
        return $this->belongsTo('App\Models\Vendor','vendor_id','vendor_id');
    }

    public function Products(){
        return $this->belongsToMany('App\Models\Product')->withPivot('mfg_date', 'exp_date','active','quantity');
    }
}

2）供应商

namespace App\Models;

use Illuminate\Foundation\Auth\User as Authenticatable;

class Vendor extends Authenticatable
{
    protected $connection = 'vendor';
    protected $primaryKey = 'vendor_id';
    protected $fillable = [
        'email','phone','password',
    ];
    protected $hidden = [
        'password', 'remember_token',
    ];

    public function Vendor_Detail(){
        return $this->hasOne('App\Models\Vendor_Detail','vendor_id','vendor_id');
    }

    public function Shops(){
        return $this->hasMany('App\Models\Shop','vendor_id','vendor_id');
    }
    public function Documents(){
        return $this->hasMany('App\Models\Vendor_document','vendor_id','vendor_id');
    }
}

显示数据库引擎的MySQL表格详细信息。

  

的MySQL＆GT; SHOW TABLE STATUS Name =＆＃39; shop＆＃39 ;;   + ------- + -------- + --------- + ------------ + ------ + - -------------- + ------------- + ----------------- + --- ----------- ----------- + + + ---------------- --------- ------------ + ------------- + ------------ + ---------- ------- + ---------- + ---------------- + --------- + | 姓名|引擎 |版本| Row_format |行| Avg_row_length |   Data_length | Max_data_length | Index_length | Data_free |   Auto_increment | Create_time | Update_time | Check_time |   整理|校验和| Create_options |评论|   + ------- + -------- + --------- + ------------ + ------ + - -------------- + ------------- + ----------------- + --- ----------- ----------- + + + ---------------- --------- ------------ + ------------- + ------------ + ---------- ------- + ---------- + ---------------- + --------- + | 商店| InnoDB | 10 |紧凑| 1 | 16384 |
  16384 | 0 | 16384 | 0 | 17 |   2016-07-03 04:56:27 | NULL | NULL | utf8_general_ci |
  NULL | | |   + ------- + -------- + --------- + ------------ + ------ + - -------------- + ------------- + ----------------- + --- ----------- ----------- + + + ---------------- --------- ------------ + ------------- + ------------ + ---------- ------- + ---------- + ---------------- + --------- + 1行集合（0.00秒）

     

的MySQL＆GT;显示表状态Name =＆＃39;供应商＆＃39 ;;   + --------- + -------- + --------- + ------------ + ------ + ---------------- + ------------- + ----------------- + - ------------- ----------- + + + ---------------- ------- -------------- + ------------- + ------------ + -------- --------- + ---------- + ---------------- + --------- + | 姓名|引擎 |版本| Row_format |行| Avg_row_length |   Data_length | Max_data_length | Index_length | Data_free |   Auto_increment | Create_time | Update_time | Check_time |   整理|校验和| Create_options |评论|   + --------- + -------- + --------- + ------------ + ------ + ---------------- + ------------- + ----------------- + - ------------- ----------- + + + ---------------- ------- -------------- + ------------- + ------------ + -------- --------- + ---------- + ---------------- + --------- + | 供应商| InnoDB | 10 |紧凑| 1 | 16384 |
  16384 | 0 | 0 | 0 | 6 |   2016-07-07 00:46:08 | NULL | NULL | utf8_general_ci |
  NULL | | |   + --------- + -------- + --------- + ------------ + ------ + ---------------- + ------------- + ----------------- + - ------------- ----------- + + + ---------------- ------- -------------- + ------------- + ------------ + -------- --------- + ---------- + ---------------- + --------- + 1行在集（0.00秒）

请帮忙。

4 个答案:

答案 0 :(得分：3)

我发现问题出在我的连接上。我在模型中使用自定义连接而不是默认连接。在Laravel中使用DB facade时，我认为它使用的是默认连接，即 mysql ，而不是供应商。 

namespace App\Models;

use Illuminate\Foundation\Auth\User as Authenticatable;

class Shop extends Authenticatable
{
    protected $connection = 'vendor';\\custom connection
    protected $fillable = [
        'shop_id','vendor_id','name','address','pincode','phone','shop_type'
    ];

    public function Vendor(){
        return $this->belongsTo('App\Models\Vendor','vendor_id','vendor_id');
    }

    public function Products(){
        return $this->belongsToMany('App\Models\Product')->withPivot('mfg_date', 'exp_date','active','quantity');
    }
}

我的数据库配置文件中的连接：

'connections' => [
        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', 'localhost'),
            'port' => env('DB_PORT', '3306'),
            'database' => 'shop',
            'username' => 'root',
            'password' => '',
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => false,
            'engine' => 'InnoDB',
        ],

        'vendor' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', 'localhost'),
            'port' => env('DB_PORT', '3306'),
            'database' => 'shop',
            'username' => 'root',
            'password' => '',
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => false,
            'engine' => 'InnoDB',
        ]
    ],

现在，我的店铺管理员以下列方式调用交易。

 class shopController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
    }
    public function getView()
    {
        if(Auth::user()->shop_status==0)
            return View::make('shop')->with('name',json_encode(Auth::user()->Vendor_Detail()->get(['first_name', 'last_name'])));
        else
            return redirect('/home');
    }

    public function addShop(ShopDataRequest $request){
    //get the logged in vendor's model instance. Auth uses Vendor model
            $vendor = Auth::user();
    //create new Shop Model
            $shop = new Shop;
            $shop->name = $request['shop_name'];
            $shop->address = $request->addressLine1;
            $shop->pincode = $request->pincode;
            $shop->phone = $request->phone;
            $shop->shop_type = $request->shop_type;

        //getting the required connection
        $connection = DB::connection('vendor');

        $connection::beginTransaction();//calling the beginTransaction() on connection
        try{            
             //save shop details
            $vendor->Shops()->save($shop);
            //throw custom Exception
            throw new \Exception('User not created for account');
        }

        catch (Exception $e){
        //catch exception and rollback
            $connection::rollback(); //calling the rollback() on connection
        }


    }
}

并且它的工作完美。

答案 1 :(得分：0)

您必须使用<p>Text being displayed when suddenly <details> <summary>View More</summary> here comes the text to be expanded.</p> </details> 来表达您的疑问。仔细阅读手册trincot

答案 2 :(得分：0)

我认为问题不在Laravel的交易中，而是catch声明。尝试替换：

try {
   ...
} catch (Exception $ex) {
   ...
}

以下内容：

try {
   ...
} catch (\Exception $ex) {
   ...
}

请注意，Exception与\Exception不同。

答案 3 :(得分：0)

为什么不做没有交易？

如果它不会在供应商内部创建商店，只需处理您的自定义异常即可。

如果您尝试回滚不成功的执行，则

db rollback是虚函数。

    try{            
        //save shop details
        if(!$vendor->Shops()->save($shop)) {
          //throw custom Exception
          throw new \Exception('User not created for account');
        }
    }
    catch (Exception $e){
        //catch exception and do anything You wanted (without db::rollback)
    }
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