Question

我所知道的：

$this->$parent->childs(); //we get childs data

我想知道的是：

$this->child->find($id)->parent(); //how to get childs parent without including model in controller | by just using eloquent

以下是员工和员工依赖模型的示例代码：

trait EmployeeRelationships{

    public function dependents(){
        return $this->hasMany(\App\DB\EmployeeDependent\EmployeeDependent::class);
    }

}

trait EmployeeDependentRelationships{

    /**
     * @return mixed
     */
    public function employee(){
        return $this->belongsTo(\App\DB\Employee\Employee::class, 'employee_id');
    }
}

Answer 1

如果要获得BelongsTo关系的反转，则需要在相应的模型上指定关系的倒数。例如：

员工类

class Employee extends Model
{
    public dependents()
    {
        return $this->hasMany(Dependant::class);
    }
}

依赖类

class Dependent extends Model
{
    public employee()
    {
        return $this->belongsTo(Employee::class, 'employee_id');
    }
}

通过定义这些关系，您可以通过调用适当的方法来访问相关模型：

$dependents = Employee::first()->dependents; // Returns an eloquent collection
$employee   = Dependent::first()->employee;  // Returns a model of type Employee

请注意，在此示例中，使用first()方法来获取模型，您可以使用正确类型的任何对象执行此操作。

laravel 5.1 BelongsTo Reverse call

1 个答案: