Invalid login message always appears in Cakephp

Question

When I log in to my login page, the warning message appears that the user or passwords are invalid, but this should only appear after pressing the login button. There’s no way around this?

My view:

    <div class="large-4 columns" style="margin-left: 15px;">
     <div class="row">
     <div class="users form">
       <span class="login_form">
        <?php echo $this->Session->flash(); ?></span>
   <?php echo $this->Form->create('User');?>
    <fieldset>
        <?php echo $this->Form->input('email');
        echo $this->Form->input('password');
    ?>
    </fieldset>
<?php echo $this->Form->submit('Login', array('class' => 'button'));?>
</div>
</div>

My action: public Function login() {

    if ($this->Auth->login()) {
        $this->redirect($this->Auth->redirect());
    } else {
        $this->Session->setFlash(__('Username ou password inválidos!'));
    }
}

Answer 1

It is because your action is trying to authenticate as soon as it loads.

// Verifica o tipo de requisição, se for POST(form submit) tenta logar.
if($this->request->is('post')) {
    if ($this->Auth->login()) {
        $this->redirect($this->Auth->redirect());
    } else {
        $this->Session->setFlash(__('Username ou password inválidos!'));
    }
}