調用一個非對象的成員函數save（）

Question

我正在構建一個小的laravel應用程序的初始級別。我在代碼中出現錯誤，無法解決。 下面是代碼

樁模型

namespace App; 

use Illuminate\Database\Eloquent\Model; 

class post extends Model 
{ 
    public function user() 
    { 
     return $this->belongsTo('app\user'); 
    } 
} 

用戶模型

namespace App; 

use Illuminate\Contracts\Auth\Authenticatable; 
use Illuminate\Database\Eloquent\Model; 


class user extends Model implements Authenticatable 
{ 
    use \Illuminate\Auth\Authenticatable; 
    public function posts() 
    { 
    $this->hasMany('app\post'); 
    } 
} 

PostController中

namespace App\Http\Controllers; 
use App\post; 
use Illuminate\Http\Request; 

class postcontroller extends Controller{ 
    public function postCreatePost(Request $request){ 
    $post = new post(); 
    $post->body = $request['body']; 
    $request->user()->posts()->save($post); 
    return redirect()->route('dashboard'); 
    } 
} 

謝謝你提前任何從試圖解決這個查詢。

Answer 1

確保在用戶模型中返回關係。

class user extends Model implements Authenticatable 
{ 
    use \Illuminate\Auth\Authenticatable; 
    public function posts() 
    { 
     return $this->hasMany('app\post'); 
    } 
} 

您發佈的代碼不具有return的posts函數內。

Answer 2

我認爲這應該可以解決

你的表字段添加到保護$可填寫= []數組

用戶

namespace App; 

use Illuminate\Database\Eloquent\Model; 

class post extends Model 
{ 
    protected $fillable = ['body']; 

    public function user() 
    { 
     return $this->belongsTo('app\user'); 
    } 
} 

後

namespace App; 

use Illuminate\Contracts\Auth\Authenticatable; 
use Illuminate\Database\Eloquent\Model; 


class user extends Model implements Authenticatable 
{ 

    use \Illuminate\Auth\Authenticatable; 

    protected $fillable = ['username', 'field2', 'blabla']; 

    public function posts() 
    { 
    return $this->hasMany('app\post'); 
    } 
} 

PostController中

namespace App\Http\Controllers; 
use App\post; 
use Illuminate\Http\Request; 

class postcontroller extends Controller{ 
    public function postCreatePost(Request $request){ 
    $post = new post(['body' => $request->body]); 
    $request->user->posts()->save($post); 
    return redirect()->route('dashboard'); 
    } 
}