我正试图覆盖Post类的save()方法,以便验证将保存到记录中的一些字段:
// User.php
<?php
class Post extends Eloquent
{
public function save()
{
// code before save
parent::save();
//code after save
}
}
当我尝试在单元测试中运行这个方法时,我会得到以下错误:
..{"error":{"type":"ErrorException","message":"Declaration of Post::save() should be compatible with that of Illuminate''Database''Eloquent''Model::save()","file":"'/var'/www'/laravel'/app'/models'/Post.php","line":4}}
创建Model.php类,您将在另一个自验证模型中扩展该类
app/models/Model.php
class Model extends Eloquent {
/**
* Error message bag
*
* @var Illuminate'Support'MessageBag
*/
protected $errors;
/**
* Validation rules
*
* @var Array
*/
protected static $rules = array();
/**
* Validator instance
*
* @var Illuminate'Validation'Validators
*/
protected $validator;
public function __construct(array $attributes = array(), Validator $validator = null)
{
parent::__construct($attributes);
$this->validator = $validator ?: 'App::make('validator');
}
/**
* Listen for save event
*/
protected static function boot()
{
parent::boot();
static::saving(function($model)
{
return $model->validate();
});
}
/**
* Validates current attributes against rules
*/
public function validate()
{
$v = $this->validator->make($this->attributes, static::$rules);
if ($v->passes())
{
return true;
}
$this->setErrors($v->messages());
return false;
}
/**
* Set error message bag
*
* @var Illuminate'Support'MessageBag
*/
protected function setErrors($errors)
{
$this->errors = $errors;
}
/**
* Retrieve error message bag
*/
public function getErrors()
{
return $this->errors;
}
/**
* Inverse of wasSaved
*/
public function hasErrors()
{
return ! empty($this->errors);
}
}
然后,调整您的Post模型
此外,您还需要为此模型定义验证规则。
app/models/Post.php
class Post extends Model
{
// validation rules
protected static $rules = [
'name' => 'required'
];
}
控制器方法
得益于Model类,Post模型在每次调用save()
方法时都会自动验证
public function store()
{
$post = new Post(Input::all());
if ($post->save())
{
return Redirect::route('posts.index');
}
return Redirect::back()->withInput()->withErrors($post->getErrors());
}
这个答案主要基于Jeffrey Way针对Laravel 4的Laravel模型验证包。
所有的功劳都归功于这个人!
如何在Laravel 4.1 中覆盖Model::save()
public function save(array $options = array())
{
parent::save($options);
}
如果要覆盖save()方法,它必须与Model:中的save()相同
<?php
public function save(array $options = array()) {}
并且;您还可以使用Model Events挂接save()调用:http://laravel.com/docs/eloquent#model-事件