php - How to validate user must choose at least one value radio button in CakePHP? -

i have code in view file radio button (cakephp) :

echo $this->form->input('publish_flg', array(                 'type' => 'radio',                 'div' => false,                 'label' => false,                 'fieldset' => false,                 'legend' => false,                 'hiddenfield' => false,                 'required' => false,                 'separator'=> '</div><div class="radio-inline">',                 'before' => '<div class="radio-inline">',                 'after' => '</div>',                 'options' => array(1 => 'yes', 0=> 'no'),                 'error' => array(                     'attributes' => array('wrap' => 'div', 'class' => 'alert alert-danger', 'escape' => 'false')                 )             )); 

now want user must check @ least 1 value in radio button, both validate write in model not successfull :

solution 1 (it return message error both check or not check radio button)

public $validate = array(      'publish_flg' => array(          'notempty' => array(             'required' => true,             'message' => 'error validate'           )       ) ); 

solution 2 (it not validate, if don't check radio button, submit data database)

public $validate = array(          'publish_flg' => array(                 'rule' => 'notempty',                 'message' => 'error validate'               )     ); 

can give me solution ? , thanks.

in controller, don't use $this->model->save() validate, used $this->model->validates(), wrong ?

notempty validation should work, try inlist, since specify values either 0 no , 1 yes in formhelper.

if you're not sure syntax, try bake model , create validation rules way.