Cake Explorer’s Weblog

First of all in app controller we need to gather all exists actions.

class AppController extends Controller {

   function __construct()
    {
        if (isset($this->othAuthOpen)) {
            $othOpen=array_map(‘strtolower’,$this->othAuthOpen);
        } else {
            $othOpen=array();
        }
        $protected = array( ‘object’, low($this->name. ‘Controller’), ‘controller’, ‘appcontroller’,
            ‘tostring’, ‘requestaction’, ‘log’, ‘cakeerror’, ‘constructclasses’, ‘redirect’, ‘set’, ‘setaction’,
            ‘validate’, ‘validateerrors’, ‘render’, ‘referer’, ‘flash’, ‘flashout’, ‘generatefieldnames’,
            ‘postconditions’, ‘cleanupfields’, ‘beforefilter’, ‘beforerender’, ‘afterfilter’, ‘disablecache’, ‘paginate’);
        $protected=am($protected,array_map(‘strtolower’,get_class_methods(‘AppController’)));
        $controllerName = Inflector::camelize($this->name);
        $controllerPath = Inflector::underscore($controllerName);
        $methList=array();
        $methods=get_class_methods($controllerName.‘Controller’);
        if (is_array($methods)) {
            foreach($methods as $method) {
                if ($method{0} != ‘_’ && !in_array(low($method), $othOpen) && !in_array(low($method), am($protected, array(‘delete’, ”)))) {
                    $methList[]=$method;
                }
            }
        }
        //debug($methList);
        $this->othAuthRestrictions=$methList;

         }
}

After it we just need to declare in controller list of opened methods:

       var $othAuthOpen = array(‘login’, ‘logout’, ‘forget’ , ‘register’, ‘confirm’, ‘noaccess’);
 

This behavior allow to limit selected and update rows of model with some scope.

Example of using if you want to scope articles with scope user_id then in beforeFiler of ArticlesController we place next code.
Value ‘User.id’ placed into session during login.


   $this->Article->scopeSetup(array('user_id'=>$this->Session->read('User.id')));
   $this->Article->scopeEnable();


After this all insert and read will scoped with user_id value. 
Now for example possible to call $this->paginate() without any additional conditions.

Also before create and delete record behavior check that record from required scope. 

<?php /* 
 * Scope behavior for cakePHP 
 * comments, bug reports are welcome skie AT mail DOT ru 
 * @author Yevgeny Tomenko aka SkieDr 
 * @version 1.0.0.1 
 
 configuration is
 
 1)  array (‘scope’ => array(‘parent_id’=>$parentIdValue, ‘secondParent’=> $secondParentValue), ‘enabled’ => true);
 
  2) array(‘parent_id’=>$parentIdValue, ‘secondParent’=> $secondParentValue);   3) array (‘enabled’ => false);
  
 */ 

;
    
    function setup(&$model, $config = array()) {
        $this->scopeSetup(&$model, $config);
    }
    
    function scopeSetup(&$model, $config = array()) {
        $settings = array(‘enabled’=>true);
        if (isset($config[‘scope’])) {
            $settings[‘scope’]=$config[‘scope’];
        } else{
            $settings[‘scope’]=$config;
        }
        if (isset($config[‘enabled’])) {
            $settings[‘enabled’]=$config[‘enabled’];
        }        
        $this->settings[$model->name] = $settings;
    }
    
    function scopeEnable (&$model){
        $this->settings[$model->name][‘enabled’] = true;        
    }     function scopeDisable (&$model){
        $this->settings[$model->name][‘enabled’] = false;        
    }
    
    /**
     * Before find method. Called before all find
     *
     * Set scope filer settings
     *
     * @param AppModel $model
     * @return boolean True to continue, false to abort the save
     */ 
    function beforeFind(&$model, $cond) {
        if (!$this->settings[$model->name][‘enabled’]) return true;
        if (!is_array($cond[‘conditions’])) {
            $cond[‘conditions’]=array($cond[‘conditions’]);
        }
        foreach ($this->settings[$model->name][‘scope’] as $key => $value) {
            $cond[‘conditions’][$model->name.‘.’.$key]=$value;
        }    
        return $cond;
    }      function beforeSave(&$model

) {
        if (!$this->settings[$model->name][‘enabled’]) return true;
        if (empty($model->data[$model->name][$model->primaryKey])) { //add
            foreach ($this->settings[$model->name][‘scope’] as $key => $value) {
                $model->data[$model->name][$key]=$value;
            }
        } else { //update
            // now nothing to do
        }
        return true;
    }      function beforeDelete(&$model) {        
        if (!$this->settings[$model->name][‘enabled’]) return true;
        
        if ($model->id!==false) {
            $curr=$model->read(null,$model->id);
        }
        
        foreach ($this->settings[$model->name][‘scope’] as $key => $value) {
            if ($curr[$model->name][$key]!=$value) return false;
        }
        
        return true;
    } 
    
}
?>

In last build I got inforation next warning

Dispatcher::start – Controller::$beforeFilter property usage is deprecated and will no longer be supported.  Use Controller::beforeFilter().

 So now in app_controller necessry to use beforeFilter function. I used beforeFilter property in app_controller before and now i got next trouble: some my controllers redeclare beforeFilter. So don’t forget to call parent class in controllers.

 function beforeFilter() {
     parent::beforeFilter();
 }

As you know cakephp 1.2 allow to call custom functions during validation.

var $validate = array( 	'alias' => array( 
		'rule' => array('unique', 'alias'), 
		'required' => true, 'allowEmpty' => false, 
		'message' => 'Such alias already exists' 	), 
);

This is sample when you need to have unique field in whole table.

 function unique($data, $name){
  $this->recursive = -1;
  $found = $this->find(array(“{$this->name}.$name” => $data));
  $same = isset($this->id) && $found[$this->name][$this->primaryKey] == $this->id;
  return !$found || $found && $same;
 }

This example from cakebaker blog.