ZF Zend Form Validator to check if user is allowed to change field?
is it possible to write a validator for a zend form, which checks if the user has the right to change a form field? Means the user sees the field, but if tries even without permission (no acl right), he receives an error message? subsequent this means a field is deactivated if the user is no开发者_StackOverflowt permitted to change the field.
Your going to want to use Zend_Acl
to check permissions. You will want something like this:
/** Application_Validate_HasEditRights::isValid()**/
public function isValid($value, $context = array())
{
// Set in form or element using $this->setResource()
$resource = $this->_resource;
// Set in form or element using $this->setPrivilege()
$privilege = $this->_privilege;
if ( empty($resource) || empty($privilege) ) {
throw new Zend_Exception("Validator requires a resource and privilege");
}
// Set in form or element $this->setOriginalValue()
$original = $this->_originalValue;
$isEdit = false;
// Check if original matches new value
if ($original != $value) {
$isEdit = true;
}
/** Get ACL **/
$acl = new Zend_Acl();
$acl->addRole('guest');
$acl->addRole('administrator', 'guest');
$acl->addResource('form');
// $acl->allow('role', 'resource', array('privilege'));
$acl->allow('guest','form', array('limited')); // arbitrary resource and privilege names
$acl->allow('administrator','form', array('full-access'));
// Get the role of the logged in user; this may be different from how you store it
$role = Zend_Auth::getInstance()->getIdentity()->role;
// Check if the role has access to this form
if ( $isEdit && !$acl->isAllowed($role, $resource, $privilege) ) {
// Set Error message
$this->_error(self::INVALID_PRIVILEGES);
return false;
}
return true;
}
精彩评论