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When you click Set password button redirected to newpassword/add but the token not exists here, because used it only a previous step:

1. Password reset request
2. Click link in email (token exist)
3. Fill the form and click "Set password" (send form data to newpassword/add) - the token is not exist here but you want to use it: $token = $this->token; but now the "token" is: add

Sorry, you must be refactoring your password reset code logic. I think this is harder to fix than rewriting the whole process

UPDATE:

Add $data['token'] = $token; into index method in Newpassword controller

AND

modify form action url in views/auth/newpassword.php to this:

IMPORTANT!!!

Add return to ell functions in model: return $this->db-> .... And put redirect('') after set session flashdata!

I tested it and I think fixed the problem.

After set the new password you redirect to /newpasword but the index function in Newpasword controller only works with 2 parameter. You need to create a new function in controller to view the success page (or redirect to main page with a session alert)

Change these 2 lines!

I modified your class to use build-in Email library and mixed my code from a working project:

This is how the is_unique works, it checks the table for any duplicate entries as it has no way of knowing what id is being edited. Is this a bug? Maybe.
But you can make your own validation function and make a call to it. Like so -

According to codeigniter session documentation, you can use something like this:

$this->session->set_userdata('user_avatar', $new_user_avatar);

Of course you need to add this in your code somewhere above the place you display the avatar.

For $new_user_avatar you'll even need to re-query the database after the avatar update, or you simple update the session after getting the form after you upload the file.

Acordingly to your code:

1. In login controller you are setting up in array the session.
2. with update_user in model you are updating your avatar.
3. You are displaying in header view from session.

Your question is how to update the avatar. In the moment you use the update_user model, you have 2 options: 1. you also update the session with the specific avatar. 2. your run this function

$current_user = $this->Usermodel->user_login($email, $password); array['user_avatar'] = $current_user->first_name

So final solution would be:

$this->session->set_userdata('user_avatar', $avatar); should go after $avatar = $_FILES['userfile']['name']; in the controller (line 91).

This error tells you that a variable doesn't exist or was not initialized. Looking at this code

In CodeIgniter You can create a core controller in the following path:

application/core/MY_Controller.php

Then you can use it to extend your controllers for example: