Login Drupal 7-让我登录并自定义错误消息

谁能帮我实现Drupal 7的“让我保持登录”功能，并自定义登录表单中的错误消息。 在page--front.tpl.php中，我对登录表单使用了

，front_login（）函数位于template.php中

php函数是

<?php
function front_login() {
global $user;
if ($user->uid == 0) {
    $form = drupal_get_form('front_login_form');        
    return theme('status_messages').render($form);
} else {

    return '<div id="loginbar">' . t('Welcome back ') . ucwords($user->name) . '</div>';
}
}

function front_login_form($form, &$form_state) {
global $base_url;   
$form['#id'] = 'login';
$haveAccount = '<div class="title"><span>Already have an account?</span><br>Log In Here</div>';
$forgot = '<div class="forgot"><a href="#">Forgot your password?</a></div>';
$form['#validate'] = user_login_default_validators();   
$form['#submit'][] = 'front_login_form_submit';

$form['name'] = array(
    '#type' => 'textfield',
    '#id' => 'user_login',
    '#prefix' => $haveAccount . '<div class="inputholder"><div class="icon glyphicon glyphicon-user"></div>',
    '#suffix' => '</div>',       
    '#required' => TRUE,
    '#attributes' => array('class' => array('footerinput'), 'placeholder' => array(t('Username'))),
);

$form['pass'] = array(
    '#type' => 'password',
    '#id' => 'pwd_login',
    '#prefix' => '<div class="inputholder"><div class="icon"><img src="' . $base_url . '/' . drupal_get_path('theme', 'foodnet') . '/images/icon-2.png"></div>',
    '#suffix' => "</div>",
    '#required' => TRUE,
    '#attributes' => array('class' => array('footerinput'), 'placeholder' => array(t('Password'))),
);

$form['keep_logged'] = array(
    '#type' => 'checkbox',
    '#title' => t('Keep me logged in'),
    '#default_value' => 1,
    '#prefix' => '<div class="row">
                 <div class="col-md-6">
                 <div class="checkbox"><label>',
    '#suffix' => '</label></div>
                </div>'
);

$form['actions'] = array('#type' => 'actions');

$form['actions']['submit'] = array(
    '#type' => 'submit',
    '#id' => 'but_login',
    '#name' => 'but_login',
    '#value' => t('Log In »'),
    '#prefix' => '<div class="col-md-6"><div class="loginBtn">',
    '#suffix' => '</div></div> </div>' . $forgot
);
$form['actions']['submit']['#attributes']['class'][] = 'btn';
$form['actions']['submit']['#attributes']['class'][] = 'btn-yellow';
$form['actions']['submit']['#attributes']['class'][] = 'btn-lg';
$form['actions']['submit']['#attributes']['class'][] = 'col-md-12';

return $form;
}

function front_login_form_submit($form, &$form_state) {  
global $user;    
$user = user_load($form_state['uid']);   
$form_state['redirect'] = 'profile';
user_login_finalize($form_state);

if($form_state['values']['keep_logged'] ==0){ 
    ini_set('session.cookie_lifetime', 0);          
    foreach ($_COOKIE as $key => $value) {
        setcookie($key, $value, 0); 
    }
    setcookie('_fnet_keepLogged', 0, time()+200000);
}else{       
    ini_set('session.cookie_lifetime', 2000000);
    setcookie('_fnet_keepLogged', 1, time()+200000);
} 
}