laravel - 用外键查询

欢迎！我在数据库笔记和飞行员中有两张表，我想显示属于飞行员的笔记。我添加外键票据表，但我也有这样的问题，当我尝试创建新注：laravel - 用外键查询

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`app`.`notes`, CONSTRAINT `notes_pilot_id_foreign` FOREIGN KEY (`pilot_id`) REFERENCES `pilots` (`id`))

注型号：

class Note extends Model 
    { 
     protected $table = 'notes'; 
     /** 
     * The attributes that are mass assignable. 
     * 
     * @var array 
     */ 
     protected $fillable = [ 
      'data', 'zadanie', 'uwagi', 'pilot_id', 
     ]; 

     public function pilot() { 
      return $this->belongsTo(Pilot::class); 
     } 
    }

试点模式：

class Pilot extends Model 
{ 
    protected $table = 'pilots'; 
    /** 
    * The attributes that are mass assignable. 
    * 
    * @var array 
    */ 
    protected $fillable = [ 
     'name', 'phone', 'email', 
    ]; 

    public function note() { 
     return $this->hasMany(Note::class); 
    } 
}

注控制器店方法：

public function store(Request $request) 

{ 

    $this->validate($request, [ 

     'data' => 'required', 

     'zadanie' => 'required', 

     'uwagi' => 'required', 

    ]); 


    $note = new Note (array(
     'data' => $request->get('data'), 
     'zadanie' => $request->get('zadanie'), 
     'uwagi' => $request->get('uwagi'), 

    )); 
    $note->save(); 
    $note->pilot()->sync($request->get('pilots')); 

    return redirect()->route('uwagi.index') 

        ->with('success','Uwagi dodane poprawnie'); 

}

来源

2017-03-15 tomczas

您应该在迁移或数据库表上检查外键。 –

试试这返回$ this-> hasMany（'App \ Note'）; 和试试这个 return $ this-> belongsTo（'App \ Pilot'）;

来源

2017-03-15 19:26:03

问题解决。我只是没有放弃在公共职能的外键在迁移。

来源

2017-03-15 20:29:43 tomczas

laravel - 用外键查询

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