Question

我有Laravel Eloquent班Collage

class Collage extends Model
{

    /**
     * Get the User that owns this Collage.
     */
    public function user()
    {
        return $this->belongsTo('App\User');
    }
}

拼贴迁移架构

Schema::create('collages', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('user_id')->unsigned();
            $table->string('name')->nullable();
            $table->timestamps();
        });

和User

class User extends Authenticatable
{
    /**
     * Get all Collages that belongs to this User.
     */
    public function collages()
    {
      return $this->hasMany('App\Collage');
    }
}

但是当我在修补程序上执行此操作时

$user = App\User::find(1)->first();
$collage = new App\Collage;
$collage->name = 'Collage';
$collage->user = $user;

//and save
$collage->save();

引发错误QueryException

General error: 1 table collages has no column named user

Answer 1

更新您的架构以建立关系，

Schema::create('collages', function (Blueprint $table) {
    $table->increments('id');
    $table->integer('user_id')->unsigned();
    $table->foreign('user_id')->references('id')->on('users');
    $table->string('name')->nullable();
    $table->timestamps();
});

那样，Laravel Eloquent会自动引用这段关系。

Answer 2

更改

$collage->user = $user

要

$collage->user_id = $user->id

Laravel Eloquent保存关系模型失败

2 个答案: