php - 拉维尔 5 : SQLSTATE[23000]: Integrity constraint violation

Question

我有一个包含以下字段的表单:姓名、全名、描述、电子邮件、密码、州、城市(选择州时通过 Ajax 填写)和照片(图片上传)。这是我的架构:

public function up()
{
    Schema::create('states', function(Blueprint $table)
    {
        $table->increments('id');
        $table->string('acronym');
        $table->string('name');
    });

    Schema::create('cities', function(Blueprint $table)
    {
        $table->increments('id');
        $table->string('name');
        $table->integer('state_id')->unsigned();
        $table->foreign('state_id')->references('id')->on('states');
    });

    Schema::create('users', function(Blueprint $table)
    {
        $table->increments('id');
        $table->string('name');
        $table->string('fullname');
        $table->string('photo');
        $table->text('description');
        $table->string('email');
        $table->string('password', 60);
        $table->integer('city_id')->unsigned();
        $table->foreign('city_id')->references('id')->on('cities');
        $table->rememberToken();
    });
}

我的问题是，当我按下提交按钮时，会出现以下错误消息:

SQLSTATE[23000]:违反完整性约束:1452 无法添加或更新子行:外键约束失败(yearbook。users，CONSTRAINT users_city_id_foreign FOREIGN KEY (city_id) REFERENCES cities (id)) (SQL: insert into users ( name, description, email) values (Gabriel, Description, email@gmail.com))

所以问题与 city_id 作为外键有关(表单选项中的“值”属性是 id)。例如:

<option value="281">Abaíra</option>

但是当我尝试通过 phpmyadmin 插入时，它插入时没有错误。

那么可能是什么问题呢？

这是我在 Controller 上的保存方法:

public function saveRegister()
{
    $rules = array(
        'name' => 'required',
        'description' => 'required',
        'fullname' => 'required',
        'email' => 'required',
        'password' => 'required',
        'state' => 'required',
        'city' => 'required',
        'photo' => 'required',
        'photo' => 'image|max:3000000',
    );
    $val = \Validator::make(\Input::all(), $rules);

    if($validar->fails()){
        return redirect('register')->withErrors($val);
    } else {
        $user = new User(array(
            'name' => \Input::get('name'),
            'description' => \Input::get('description'),
            'fullname' => \Input::get('fullname'),
            'email' => \Input::get('email'),
            'city_id' => \Input::get('city'),
        ));
        $user->timestamps = false;
        $user->save();
        return redirect('register')->with('message', 'User saved!');

    }
}

编辑:在 saveRegister() 方法中修复了 city_id。

Answer 1

代替

$user = new User(array(
        'name' => \Input::get('name'),
        'description' => \Input::get('description'),
        'fullname' => \Input::get('fullname'),
        'email' => \Input::get('email'),
        'city' => \Input::get('city'),
    ));

这样做

$user = new User();
$user->fill(array(
        'name' => \Input::get('name'),
        'description' => \Input::get('description'),
        'email' => \Input::get('email')
    ));
$user->fullname = \Input::get('fullname');
$user->city= \Input::get('city');

或者改变模型中的$fillable属性