Question

在laravel中迈出第一步，然后撞墙。

我有两个实体：

Schema::create('addresses', function (Blueprint $table) {
        $table->engine = "InnoDB";
        $table->increments('id');
        $table->string('street');
        (...)
    });

     Schema::table('company', function($table) {
        $table->foreign('addressid')
            ->references('id')->on('addresses')
            ->onDelete('cascade');
    });

和

class Address extends Model {
    public function shipyard() {
        return $this->belongsTo('App\Company', 'addressid');
    }
}
class Company extends Model {
    public function address() {
        return $this->hasOne('App\Address', 'id', 'addressid');
    }
}

模型

Route::post('/company', function (Request $request) {
    (...validation...)

    $company = new Company();
    $company->name = $request->name;

    $address = new Address();
    $address->street = $request->street;
    (...)

    $company->address()->save($address);
    $company->save();
    return redirect('/');
});

当我想在DB中创建这些实体时，我在HTML中使用一个表单来收集所有数据。然后我发布请求并执行：

{{1}}

结果我在DB中有两个实体，但是＆＃34; addressid＆＃34; field为null。为什么呢？

Answer 1

更改公司关系（您可以删除的地址中的关系）：

Route::post('/company', function (Request $request) {
    (...validation...)

    $company = new Company();
    $company->name = $request->name;

    $address = new Address();
    $address->street = $request->street;
    (...)

    $address->save();
    $company->address()->associate($address);
    $company->save();
    return redirect('/');
});

保存代码：

  SELECT DISTINCT
      customer.first_name
    FROM
      rental,
      customer
    WHERE
      rental.customer_id = customer.customer_id
    GROUP BY
      rental.rental_id
    HAVING
      (
        rental.return_date - rental.rental_date
      ) =(
      SELECT
        MAX(countRental)
      FROM
        (
        SELECT
          (
            rental.return_date - rental.rental_date
          ) AS countRental
        FROM
          rental,
          customer
        GROUP BY
          rental.rental_id
      ) AS t1
    )

Answer 2

class Address extends Model {

   // Added fillable array for mass assigment
   protected $fillable = ['street'];

   public function shipyard() {
    return $this->belongsTo('App\Company', 'addressid');
   }
}

class Company extends Model {

   // Added fillable for mass assignment
   protected $fillable = ['name','addressid'];

   // The second argument for the hasOne takes a foreign key not a primary key
   public function address() {
      return $this->hasOne('App\Address', 'addressid');
   }
}

 $company = new Company();
 $company->name = $request->name;
 $company->save();

 $company->address()->create($request->street)

laravel雄辩的一对一保存关系

2 个答案: