SQLSTATE[23000]：违反完整性约束：19 NOT NULL 约束失败：posts.user_id

Question

我正在尝试创建一个创建页面，在该页面中，用户以文本形式输入标题并选择图片，但是当我单击按钮添加新内容时 Post 我收到此错误：

SQLSTATE[23000]：违反完整性约束：19 NOT NULL 约束失败：posts.user_id（SQL：插入“post s" ("caption", "image", "updated_at", "created_at") 值 (asd, C:\xampp\tmp\phpB7DC.tmp, 2021-03-12 13:06:56, 2021-03-12 13:06:56))

我想告诉你我正在使用 sqlite 数据库。

Post的模型：

class Post extends Model
{
    protected $fillable = [
        'caption', 'image',
    ];

    public function user() 
    {
        return $this->belognsTo(User::class);
    }
}

Posts控制器：

class PostsController extends Controller
{
    public function create() 
    {
        
        return view('posts.create');
    }

    public function store() {

        $data = request()->validate([
            'caption' => 'required',
            'image' => 'required|image',
        ]);

        \App\Post::create($data);
        dd(request()->all());
    }
}

迁移文件夹中我的tablepost：

public function up()
    {
        Schema::create('posts', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->unsignedBigInteger('user_id');
            $table->string('caption');
            $table->string('image');
            $table->timestamps();
            $table->index('user_id');
        });
    }

Answer 1

您没有在交易中发送 user_id 价值

public function up()
{
    Schema::create('posts', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->unsignedBigInteger('user_id'); // this value must be set
        $table->string('caption');
        $table->string('image');
        $table->timestamps();
        $table->index('user_id');
    });
}

在这部分

class PostsController extends Controller
{
public function create() 
{
    
    return view('posts.create');
}

public function store() {

        $data = request()->validate([
            'caption' => 'required',
            'image' => 'required|image',
        ]);

        // In this section you must add user_id to data
        // For example
        $data['user_id'] = Auth::user()->id; 

        \App\Post::create($data);
        dd(request()->all());
    }
}

Answer 2

在您的迁移中，您没有将此列写为 Nullable。

您需要在验证中添加 post_id。

$data = request()->validate([
        'caption' => 'required',
        'image' => 'required|image',
        'post_id' => 'required|int'
    ]);

SQLSTATE[23000]：违反完整性约束：19 NOT NULL 约束失败：posts.user_id

SQLSTATE[23000]: Integrity constraint violation: 19 NOT NULL constraint failed: posts.user_id

database

sqlite

model-view-controller

laravel