Kohana 3：驗證模型示例

Question

我找到關於模型和驗證的示例和教程。我說的驗證（或者至少大部分）應該在模型中，我同意這一點。但我不能有任何示例或教程來說明應該如何完成。

任何人都可以幫助我一個簡單的例子，說明如何做到這一點？你在模型中的規則在哪裏？驗證會在哪裏發生？控制器如何知道驗證是否通過？控制器如何獲得錯誤消息和類似的東西？

希望有人能幫助，原因覺得這裏有點失落：對

Answer 1

我也很難找到Kohana3的例子，bestattendance的例子是Kohana2。

這是我在我自己的測試一起扔了一個例子：

應用程序/類/模型/ news.php

<?php defined('SYSPATH') OR die('No Direct Script Access'); 

Class Model_News extends Model 
{ 
    /* 
     CREATE TABLE `news_example` (
     `id` INT PRIMARY KEY AUTO_INCREMENT, 
     `title` VARCHAR(30) NOT NULL, 
     `post` TEXT NOT NULL); 
    */ 

    public function get_latest_news() { 
     $sql = 'SELECT * FROM `news_example` ORDER BY `id` DESC LIMIT 0, 10'; 
     return $this->_db->query(Database::SELECT, $sql, FALSE) 
         ->as_array(); 
    } 

    public function validate_news($arr) { 
     return Validate::factory($arr) 
      ->filter(TRUE, 'trim') 
      ->rule('title', 'not_empty') 
      ->rule('post', 'not_empty'); 
    } 
    public function add_news($d) { 
     // Create a new user record in the database 
     $insert_id = DB::insert('news_example', array('title','post')) 
      ->values(array($d['title'],$d['post'])) 
      ->execute(); 

     return $insert_id; 
    } 
} 

應用程序/消息/ errors.php

<?php 
return array(
    'title' => array(
     'not_empty' => 'Title can\'t be blank.', 
    ), 
    'post' => array(
     'not_empty' => 'Post can\'t be blank.', 
    ), 
); 

application/classes/controller/n ews.php

<?php defined('SYSPATH') OR die('No Direct Script Access'); 

Class Controller_News extends Controller 
{ 
    public function action_index() { 
     //setup the model and view 
     $news = Model::factory('news'); 
     $view = View::factory('news') 
      ->bind('validator', $validator) 
      ->bind('errors', $errors) 
      ->bind('recent_posts', $recent_posts); 

     if (Request::$method == "POST") { 
      //added the arr::extract() method here to pull the keys that we want 
      //to stop the user from adding their own post data 
      $validator = $news->validate_news(arr::extract($_POST,array('title','post'))); 
      if ($validator->check()) { 
       //validation passed, add to the db 
       $news->add_news($validator); 
       //clearing so it won't populate the form 
       $validator = null; 
      } else { 
       //validation failed, get errors 
       $errors = $validator->errors('errors'); 
      } 
     } 
     $recent_posts = $news->get_latest_news(); 
     $this->request->response = $view; 
    } 
} 

應用程序/視圖/ news.php

<?php if ($errors): ?> 
<p>Errors:</p> 
<ul> 
<?php foreach ($errors as $error): ?> 
    <li><?php echo $error ?></li> 
<?php endforeach ?> 
</ul> 
<?php endif ?> 

<?php echo Form::open() ?> 
<dl> 
    <dt><?php echo Form::label('title', 'title') ?></dt> 
    <dd><?php echo Form::input('title', $validator['title']) ?></dd> 
    <dt><?php echo Form::label('post', 'post') ?></dt> 
    <dd><?php echo Form::input('post', $validator['post']) ?></dd> 
</dl> 
<?php echo Form::submit(NULL, 'Post') ?> 
<?php echo Form::close() ?> 
<?php if ($recent_posts): ?> 
<ul> 
<?php foreach ($recent_posts as $post): ?> 
    <li><?php echo $post['title'] . ' - ' . $post['post'];?></li> 
<?php endforeach ?> 
</ul> 
<?php endif ?> 

爲了得到這個代碼在默認安裝的工作，你就必須啓用數據庫模塊，並配置它進行認證。然後你可以使用默認配置從index.php/news訪問它。

它在Kohana 3.0.7中進行了測試，並且應該給你一個很好的開始你如何佈置代碼的方法。與其他框架不同的是，Kohana似乎對你放置邏輯的位置非常開放，所以這對我來說纔是有意義的。如果要使用ORM而不是滾動自己的數據庫交互，它有自己的驗證語法，您可以查找here

Answer 2

下面是對我工作的一個簡單的例子。

在我的模型（client.php）：

<?php defined('SYSPATH') or die('No direct script access.'); 

class Client_Model extends Model { 

public $validation; 

// This array is needed for validation 
public $fields = array(
    'clientName' => '' 
); 

public function __construct() { 
    // load database library into $this->db (can be omitted if not required) 
    parent::__construct(); 

    $this->validation = new Validation($_POST); 
    $this->validation->pre_filter('trim','clientName'); 
    $this->validation->add_rules('clientName','required'); 
} 

public function create() { 
    return $this->validation->validate(); 
} 

// This might go in base Model class 
public function getFormValues() { 
    return arr::overwrite($this->fields, $this->validation->as_array()); 
} 

// This might go in base Model class 
public function getValidationErrors() { 
    return arr::overwrite($this->fields, $this->validation->errors('form_errors')); 
} 
} 

?> 

在我的控制器（clients.php）：

<?php defined('SYSPATH') OR die('No direct access allowed.'); 

class Clients_Controller extends Base_Controller { 

public function __construct() { 
    parent::__construct(); 
} 

public function index() { 

    $content = new View('clients/read'); 
    $content->foobar = 'bob.'; 

    $this->template->content = $content; 
    $this->template->render(TRUE); 

} 

/* A new user signs up for an account. */ 
public function signup() { 

    $content = new View('clients/create'); 
    $post = $this->input->post(); 
    $client = new Client_Model; 

    if (!empty($post) && $this->isPostRequest()) { 
     $content->message = 'You submitted the form, '.$this->input->post('clientName'); 
     $content->message .= '<br />Performing Validation<br />'; 

     if ($client->create()) { 
      // Validation passed 
      $content->message .= 'Validation passed'; 
     } else { 
      // Validation failed 
      $content->message .= 'Validation failed'; 
     } 

    } else { 
     $content->message = 'You did not submit the form.'; 
    } 

    $contnet->message .= '<br />'; 
    print_r ($client->getFormValues()); 
    print_r ($client->getValidationErrors()); 


    $this->template->content = $content; 
    $this->template->render(TRUE); 
} 

    } 
?> 

在我的i18n文件（form_errors.php）：

$lang = Array (
'clientName' => Array (
'required' => 'The Client Name field is required.' 
) 
); 

Answer 3

與ORM模型一起使用的KO3驗證示例。例子在1986年（blaa）的許可下發布在#kohana（freenode）上。

<?php defined('SYSPATH') or die('No direct script access.'); 

class Model_Contract extends ORM { 

    protected $_belongs_to = array('user' => array()); 

    protected $_rules = array(
    'document' => array(
     'Upload::valid'  => NULL, 
     'Upload::not_empty' => NULL, 
     'Upload::type'  => array(array('pdf', 'doc', 'odt')), 
     'Upload::size'  => array('10M') 
    ) 
); 

    protected $_ignored_columns = array('document'); 


    /** 
    * Overwriting the ORM::save() method 
    * 
    * Move the uploaded file and save it to the database in the case of success 
    * A Log message will be writed if the Upload::save fails to move the uploaded file 
    * 
    */ 
    public function save() 
    { 
    $user_id = Auth::instance()->get_user()->id; 
    $file = Upload::save($this->document, NULL, 'upload/contracts/'); 

    if (FALSE !== $file) 
    { 
     $this->sent_on = date('Y-m-d H:i:s'); 
     $this->filename = $this->document['name']; 
     $this->stored_filename = $file; 
     $this->user_id = $user_id; 
    } 
    else 
    { 
     Kohana::$log->add('error', 'Não foi possível salvar o arquivo. A gravação da linha no banco de dados foi abortada.'); 
    } 

    return parent::save(); 

    } 

    /** 
    * Overwriting the ORM::delete() method 
    * 
    * Delete the database register if the file was deleted 
    * 
    * If not, record a Log message and return FALSE 
    * 
    */ 
    public function delete($id = NULL) 
    { 

    if (unlink($this->stored_filename)) 
    { 
     return parent::delete($id); 
    } 

    Kohana::$log->add('error', 'Não foi possível deletar o arquivo do sistema. O registro foi mantido no banco de dados.'); 
    return FALSE; 
    } 
} 

Answer 4

我有一個簡短的寫了如何在下面，因爲我花了一段時間才能找出鏈接處理這個問題，我無法找到一個很好的例子。

http://www.matt-toigo.com/dev/orm_with_validation_in_kohana_3