Creating a login form in CodeIgniter based on Ion

问题:

I'm still learning my way around in CodeIgniter.

I'd like to create a login form in my codeigniter application based on Ion Auth library.

I have installed the library following the instruction and it works fine when navigating to auth/login, auth/create_user, auth/logout, etc...

However, I don't need a stand alone page for login, I'd like to embed the form in my homepage. When I use the sample provided login view in my homepage, I get the following errors:

• Message: Undefined variable: message
• Message: Undefined variable: identity
• Message: Undefined variable: password

I realize that the above variables are not defined in my view, I just can't figure out where and how they should be defined and why is that they work fine in the provided sample that came with the library?

回答1:

config/routes.php

$route['login/check'] = 'auth/my_front_end_login';

view

<?php echo form_open('login/check'); ?>

<fieldset>
    <legend>login Credentials<legend>

    <label for="identity">&lowast; Identity</label>
    <input type="text" name="identity" id="identity" value="<?php echo set_value('identity');?>" />
    <?php echo form_error('identity');?>

    <label for="password">&lowast; Password</label>
    <input type="password" name="password" id="password" value="<?php echo set_value('password');?>" />
    <?php echo form_error('password');?>

    <label for="message">&lowast; Message</label>
    <input type="text" name="message" id="message" value="<?php echo set_value('message');?>" />
    <?php echo form_error('message');?>
</fieldset>

<?php echo form_close();?>

controllers/auth

public function my_front_end_login(){
   if($this->form_validation->run('login_frontend')) // uses config/form_validation.php
   {
       //validation passed, now attempt login via ION_AUTH
       //open ION_Auth library file and see what the login method requests in its params. 
      if(ION_Auth::login($params)) // Im not familiar with it
      {
         //login success
      }
      else
      {
         //login failure
      }
   }
   else
   {
       $this->index();
   }
}

回答2:

Do you load proper libraries needed, in controller related to view where you want to embed login form, for example "form_validation" if you use form_input($message) for example, ... anyway you can avoid this by checking if $var is_set.

回答3:

<?php echo form_open('login/check'); ?>

<fieldset>
    <legend>login Credentials<legend>

    <label for="identity">&lowast; Identity</label>
    <input type="text" name="identity" id="identity" value="<?php echo set_value('identity');?>" />
    <?php echo form_error('identity');?>

    <label for="password">&lowast; Password</label>
    <input type="password" name="password" id="password" value="<?php echo set_value('password');?>" />
    <?php echo form_error('password');?>

    <label for="message">&lowast; Message</label>
    <input type="text" name="message" id="message" value="<?php echo set_value('message');?>" />
    <?php echo form_error('message');?>
</fieldset>

<?php echo form_close();?>