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CakePHP-MultivalidatableBehavior: Using many validation rulesets per model.

If you are looking for action specific validation on a model then here it goes like that :

Following code examples are based on the following scenario:

1) We have a model Member.

2) We wanna two type of validation sets on that.

     a) First in case of Login (default)
     b) Second in case editing Profile. 

3) How to use these validation sets in action.


Step 1 :
<?php 
    class MultivalidatableBehavior extends ModelBehavior {

    /**
     * Stores previous validation ruleset
     *
     * @var Array
     */
    var $__oldRules = array();

    /**
     * Stores Model default validation ruleset
     *
     * @var unknown_type
     */
    var $__defaultRules = array();

    function setUp(&$model, $config = array()) {
        $this->__defaultRules[$model->name] = $model->validate;
    }

    /**
     * Installs a new validation ruleset
     *
     * If $rules is an array, it will be set as current validation ruleset,
     * otherwise it will look into Model::validationSets[$rules] for the ruleset to install
     *
     * @param Object $model
     * @param Mixed $rules
     */
    function setValidation(&$model, $rules = array()) {
      
        if (is_array($rules)){
            $this->_setValidation($model, $rules);
        } elseif (isset($model->validationSets[$rules])) {
            $this->setValidation($model, $model->validationSets[$rules]);
        }
    }

    /**
     * Restores previous validation ruleset
     *
     * @param Object $model
     */
    function restoreValidation(&$model) {
        $model->validate = $this->__oldRules[$model->name];
    }

    /**
     * Restores default validation ruleset
     *
     * @param Object $model
     */
    function restoreDefaultValidation(&$model) {
        $model->validate = $this->__defaultRules[$model->name];
    }

    /**
     * Sets a new validation ruleset, saving the previous
     *
     * @param Object $model
     * @param Array $rules
     */
    function _setValidation(&$model, $rules) {
            $this->__oldRules[$model->name] = $model->validate;
            $model->validate = $rules;
    }

}

?> 

Save the file as \app\models\behaviors\multivalidatable.php

Step 2 : 

Go to Member model and make the following changes.

<?php

    class Member extends AppModel{
           
        var $primaryKey = 'member_id';
        var $actsAs     = array('Multivalidatable');
       
        var $validate   = array(
            'username'    =>    array(
                'notEmpty' => array(
                    'rule' => 'notEmpty',
                    'required' => true,
                    'message'  => 'Username/Email is Required',
                    'last' => true
                ),
                'email'    =>    array(
                    'rule' => 'email',
                    'message'=> 'Please provide valide username',
                    'last' => true
                )
            ),
            'password'    =>    array(
                    'rule' => 'notEmpty',
                    'message'=> 'Password is Required',
                    'last' => true
            )           
        );
       
        var $validationSets = array(
            'member_detail' => array(
                'first_name' =>    array(
                    'notEmpty' => array(
                        'rule' => 'notEmpty',
                        'required' => true,
                        'message'  => 'First Name is Required',
                        'last' => true
                    )
                ),
                'last_name' =>    array(
                    'notEmpty' => array(
                        'rule' => 'notEmpty',
                        'required' => true,
                        'message'  => 'Last Name is Required',
                        'last' => true
                    )
                ),
                'email'    =>    array(
                    'notEmpty' => array(
                        'rule' => 'notEmpty',
                        'required' => true,
                        'message'  => 'Email is Required',
                        'last' => true
                    ),
                    'email' =>    array(
                        'rule' => 'email',
                        'message' => 'Please provide valid email',
                        'last' => true
                    )
                )
            )
        );
    }



?> 

Step 3:

Go to the Members controller or to the controller actions where you want to validate a particular validate set. For example

<?php

  class MemberController extends AppController {

        var $name             = 'Member';
        var $helpers          = array('Html','Session','Javascript','Ajax');
        var $components  = array('Session','RequestHandler');
        var $uses             = array('Member');
              
        function beforeFilter() {
            $this->__validateLoginStatus();
        }

        ...............................................
       ....................................................

        function login() {
           
            if($this->Session->check('Member') === true) {
                $this->redirect('/member/index');
                exit;
            } else {
                if($this->params['form']) {
                    $this->Member->set($this->params['form']);
                   
                    if($this->Member->validates($this->params['form'])) { //here the default set would work
                   
                                   ...................................................
                                  ...................................................
                                                       
                    } else {
                        if($this->Member->validationErrors)
                            $this->errors = $this->Member->validationErrors;
                    }
                }
            }
            $this->set('errors',$this->errors);
            $this->set('notifications',$this->notifications);
            $this->set('form',$this->params['form']);
               
       }

       ........................................................................
       ........................................................................

      function edit($member_id) {
           
            $member= array();
            if($member_id) {
               
                if($this->params['form']) {
                   
                    ..........................................
                    ..........................................  
               
                    $this->Member->setValidation('member_detail'); // here it will use member_detail set for validation
                   
                    if($this->Member->validates()) {
                        $this->Member->save();
                        $this->Session->setFlash("Record updated successfully.");
                    } else
                        $this->errors = $this->Member->invalidFields();
                   
                }
            }

            $this->set('member',$member);
            $this->set('errors',$this->errors);
        }
 
       ........................................................................
       ........................................................................

  }

?>

So when you will call the edit action while saving profile details the 'member_detail' validation set would be called.

Here it's done...Enjoy!!!!!!!!!!!!


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