I'm working my way toward Advanced Validation Errors, but am struggling
with simple validation for fields that do no exist in my database. My
Cake instance first checks to see if a user has access to the site by
checking the database for the user (passwords are not kept here),
thereafter checking LDAP to verify their username/password credentials.
The database and LDAP calls work fine. Right now I'm just trying to
get it to recognize VALID_NOT_EMPTY on the username and password fields
in my login page.
-----------------------------------------------------------------------------------------------------
class User extends AppModel
{
var $name = 'User';
var $validate = array (
'username' => VALID_NOT_EMPTY,
'password' => VALID_NOT_EMPTY
);
}
-----------------------------------------------------------------------------------------------------
class UserController extends AppController
{
function login ()
{
// Page was loaded for the first time
if ( empty ( $this -> params['data'] ) )
{
$this -> render();
}
// It's a submit
else
{
$this->set ( 'data', $this->params['data'] );
// Get parameters from the form
$username = ( $this -> data['user']['username'] );
$password = ( $this -> data['user']['password'] );
if ( empty ( $username ) )
{
$this -> User -> invalidate ( 'username' );
}
if ( empty ( $password ) )
{
$this -> User -> invalidate ( 'password' );
}
// Everything's valid
if ( $this -> User -> validate ( 'username' ) == 0 )
{
// Query DB for username
$user = $this -> User -> findByUsername (
$username );
// If user was in DB, authenticate with LDAP
if ( !empty ( $user ) )
{
$ldap = new LdapUser();
if ( $ldap -> auth ( $username,
$password ) )
{
$this -> Session -> write (
'valid_user', 1 );
$this -> redirect ( '/' );
}
else
{
// Custom error to come
}
}
// Set error and redirect for login
else
{
// Custom error to come
}
}
}
}
function logout ()
{
$this -> Session -> write ( 'valid_user', 0 );
$this -> redirect ( '/user/login' );
}
}
-----------------------------------------------------------------------------------------------------
<?php echo $html->input ( 'user/username', array ( 'size' => '40' ) );
?>
<?php echo $html->tagErrorMsg ( 'user/username', 'Username is required'
); ?>
<?php echo $html->password ('user/password', array ( 'size' => '40' )
); ?>
<?php echo $html->tagErrorMsg ( 'user/password', 'Password is required'
); ?>
-----------------------------------------------------------------------------------------------------
I guess I'm misunderstanding how the validate method works:
e.g. if ( $this -> User -> validate ( 'username' ) == 0 )
Since I'm not calling save(), I believed that validate() would do the
same validation that save() does. In my controller above, validate()
is always returning true and none of the error tags are being
populated. (I read that calling invalidate() on each applicable field
would manually enable the tags.) Is there something that I'm missing?
Or if I'm misunderstanding the logic/flow, could someone please
explain.
Thanks,
Devo
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