Question

我的关系数据有很多问题，首先我会把我的模型和控制器，我用laravel 5.3

模型列表地址

class ListsAddresses extends Model
{
protected $table = "addresses";

protected $fillable = ['state', 'city', 'street_number', 'neighborhood', 'cp'];

public function lists()
{
    return $this->belongsToMany('App\Admin\Models\Lists', 'list_has_addresses' , 'address_id', 'list_id');
}

public function user(){
    return $this->belongsTo('App\Admin\Models\User');
}

public $timestamps = false;
}

控制器列出地址

public function form_edit_address( $id_list, $id_address ){

        $list = Lists::find( $id_list );

        $address = ListsAddresses::find( $id_address );

        return view( "admin.forms.form_edit_address" )
                    ->with( 'list', $list )
                    ->with( 'address', $address );

    }

表单视图

<div class="col-md-6" style="padding-right: 0">
          <div class="form-group">
            <label for="order">Orden*</label>
            <input type="order" class="form-control" id="order" name="order" value="{{ $address->order }}" required>
          </div><!-- /.form-group -->
        </div><!-- /.col -->

我的数据库表格枢轴具有下一个结构

id - title - order - list_id - address_id

如何在视图中获取与数据透视表中地址对应的订单价值？

EDDIT

这是我在创建新地址时保存订单的方式

if( $address->save() ){

                $address_data = array();

                $address_title = htmlspecialchars( $request->input( "state" ).' '.$request->input( "city" ).' '.$request->input( "street" ).' '.$request->input( "neighborhood" ).' '.$request->input( "cp" ) );

                $address_order = $request->input( "order" );

                $address_data[ $address->id ] = array( 'title' => $address_title, 'order' => $address_order );

                $list->addresses()->attach( $address_data );
     }

Answer 1

也许首先将关系函数更改为withPivot('order')

public function lists()
{
    return $this->belongsToMany('App\Admin\Models\Lists',
        'list_has_addresses' , 'address_id', 'list_id')
       ->withPivot('order');
}

接下来，你完全分开获取$ list和$ address，现在不能保证它们实际上是彼此相关的。如果你没有进行Route Model绑定，那么如果找不到东西，也许你应该有一些..OrFail（）检查用404中止：

public function form_edit_address( $id_list, $id_address )
{

    $address = ListsAddresses::findOrFail( $id_address );
    $list = $address->lists()->where('list_id', $id_list)->firstOrFail();

    return view( "admin.forms.form_edit_address" )
                ->with( 'list', $list )
                ->with( 'address', $address );
}

我认为$ list对象将是具有pivot属性的对象，因此在您的视图中，您可能会说$list->pivot->order

从视图laravel中的数据透视表中获取数据

1 个答案: