public function setConfig($config)
    {
        if (!$config instanceof HTML_QuickForm2_Rule) {
            throw new HTML_QuickForm2_InvalidArgumentException(
                'Each Rule requires a template Rule to validate with, ' .
                preg_replace('/\s+/', ' ', var_export($config, true)) . ' given'
            );
        } elseif ($config instanceof HTML_QuickForm2_Rule_Required) {
            throw new HTML_QuickForm2_InvalidArgumentException(
                'Cannot use "required" Rule as a template'
            );
        }
        return parent::setConfig($config);
    }
public function setConfig($config)
    {
        if (!$config instanceof HTML_QuickForm2_Rule) {
            throw new HTML_QuickForm2_InvalidArgumentException(
                'Each Rule requires a template Rule to validate with, ' .
                preg_replace('/\s+/', ' ', var_export($config, true)) . ' given'
            );
        } elseif ($config instanceof HTML_QuickForm2_Rule_Required) {
            throw new HTML_QuickForm2_InvalidArgumentException(
                'Cannot use "required" Rule as a template'
            );
        }
        return parent::setConfig($config);
    }
public function setConfig ( $ config ) { if ( ! $ config instanceof HTML_QuickForm2_Rule ) { throw new HTML_QuickForm2_InvalidArgumentException ( 'Each Rule requires a template Rule to validate with, ' . preg_replace ( '/\s+/' , ' ' , var_export ( $ config , true ) ) . ' given' ) ; } elseif ( $ config instanceof HTML_QuickForm2_Rule_Required ) { throw new HTML_QuickForm2_InvalidArgumentException ( 'Cannot use "required" Rule as a template' ) ; } return parent :: setConfig ( $ config ) ; }
Sets the template Rule to use for actual validation

We do not allow using Required rules here, they are able to validate
containers themselves without the help of Each rule.

@param    HTML_QuickForm2_Rule    Template Rule
@return   HTML_QuickForm2_Rule
@throws   HTML_QuickForm2_InvalidArgumentException if $config is either not
an instance of Rule or is an instance of Rule_Required
Sets the template Rule to use for actual validation