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Login System Not Working

November 19, 2017, 6:09 pm
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Hello so I've been trying to create a login and register system on my CodeIgniter Application. So far it works great, I can create and fetch them(if not logged in) wherever I want them to be displayed, the problem that now comes to me is the restricting part.

For example I have an admin_controller to which I need to restrict the access. Rather than adding a code to any controller that needs the same configuration, I created a "MY_Controller" in the core folder, here is my code:

PHP Code:
<?php
class MY_Controller extends CI_Controller{
    function __construct(){
        parent::__construct();
    }
}

class Admin_Controller extends MY_Controller{
    function __construct(){
        parent::__construct();

        // Check Login
        if(!$this->session->userdata('logged_in')){
            redirect('admin/login');
        }
    }
}

class Public_Controller extends MY_Controller{
    public function __construct(){
        parent::__construct();
    
        $this->load->library('menu');

        $pages_public /*$this->pages*/ = $this->menu->get_pages();

        // Brand/Logo
        $this->brand = 'My Website';

        // Banner
        $this->banner_heading = 'Welcome To Our Website';
        $this->banner_text = 'This example is a quick exercise to illustrate how the default, static navbar and fixed to top navbar work. It includes the responsive CSS and HTML, so it also adapts to your viewport and device.';
        $this->banner_link = 'pages/show/our-team';
    }
} 

and this is what I have on my admin_controller, so far nothing wrong:

PHP Code:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Pages extends Admin_Controller {
    
    public function index(){
        $data['pages'] = $this->Page_model->get_list();

        // Load template
        $this->template->load('admin', 'default', 'pages/index', $data);
    }

    public function add(){
        // Field Rules
        $this->form_validation->set_rules('title', 'Title', 'trim|required|min_length[3]');
        $this->form_validation->set_rules('subject_id', 'Subject', 'trim|required');
        $this->form_validation->set_rules('body', 'Body', 'trim|required');
        $this->form_validation->set_rules('is_published', 'Publish', 'required');
        $this->form_validation->set_rules('is_featured', 'Feature', 'required');
        $this->form_validation->set_rules('order', 'Order', 'integer');

        if($this->form_validation->run() == FALSE){
            $subject_options = array();
            $subject_options[0] = 'Select Page Category';

            $subject_list = $this->Pages_categories_model->get_list();

            foreach($subject_list as $subject){
                $subject_options[$subject->id] = $subject->name;
            }

            $data['subject_options'] = $subject_options;

            // Load template
            $this->template->load('admin', 'default', 'pages/add', $data);
        } else {
            $slug = str_replace(' ', '-', $this->input->post('title'));
            $slug = strtolower($slug);

            // Page Data
            $data = array(
                'title'         => $this->input->post('title'),
                'slug'          => $slug,
                'subject_id'    => $this->input->post('subject_id'),
                'body'          => $this->input->post('body'),
                'is_published'  => $this->input->post('is_published'),
                'is_featured'   => $this->input->post('is_featured'),
                'in_menu'       => $this->input->post('in_menu'),
                'user_id'       => $this->session->userdata('user_id'),
                'order'       => $this->input->post('order')
            ); 

            // Insert Page
            $this->Page_model->add($data);

            // Activity Array
            $data = array(
                'resource_id'   => $this->db->insert_id(),
                'type'            => 'page',
                'action'        => 'added',
                'user_id'        => $this->session->userdata('user_id'),
                'message'        => 'A new page was added ('.$data["title"].')'
            );

            // Insert Activity
            $this->Activity_model->add($data);

            // Set Message
            $this->session->set_flashdata('success', 'Page has been added');

            // Redirect
            redirect('admin/pages');
        }

    }

    public function edit($id){
        // Field Rules
        $this->form_validation->set_rules('title', 'Title', 'trim|required|min_length[3]');
        $this->form_validation->set_rules('subject_id', 'Subject', 'trim|required');
        $this->form_validation->set_rules('body', 'Body', 'trim|required');
        $this->form_validation->set_rules('is_published', 'Publish', 'required');
        $this->form_validation->set_rules('is_featured', 'Feature', 'required');
        $this->form_validation->set_rules('order', 'Order', 'integer');

        if($this->form_validation->run() == FALSE){
            $data['item'] = $this->Page_model->get($id);

            $subject_options = array();
            $subject_options[0] = 'Select Page Category';

            $subject_list = $this->Pages_categories_model->get_list();

            foreach($this->Pages_categories_model->get_list() as $subject){
                $subject_options[$subject->id] = $subject->name;
            }

            $data['subject_options'] = $subject_options;

            // Load template
            $this->template->load('admin', 'default', 'pages/edit', $data);
        } else {
            $slug = str_replace(' ', '-', $this->input->post('title'));
            $slug = strtolower($slug);

            // Page Data
            $data = array(
                'title'         => $this->input->post('title'),
                'slug'          => $slug,
                'subject_id'    => $this->input->post('subject_id'),
                'body'          => $this->input->post('body'),
                'is_published'  => $this->input->post('is_published'),
                'is_featured'   => $this->input->post('is_featured'),
                'in_menu'       => $this->input->post('in_menu'),
                'user_id'       => $this->session->userdata('user_id'),
                'order'       => $this->input->post('order')
            ); 

            // Update Page
            $this->Page_model->update($id, $data);

            // Activity Array
            $data = array(
                'resource_id'   => $this->db->insert_id(),
                'type'            => 'page',
                'action'        => 'updated',
                'user_id'        => $this->session->userdata('user_id'),
                'message'        => 'A page was updated ('.$data["title"].')'
            );

            // Insert Activity
            $this->Activity_model->add($data);

            // Set Message
            $this->session->set_flashdata('success', 'Page has been updated');

            // Redirect
            redirect('admin/pages');

        }
    }

    public function delete($id){
        $title = $this->Page_model->get($id)->title;

        // Delete Page
        $this->Page_model->delete($id);

        // Activity Array
            $data = array(
                'resource_id'   => $this->db->insert_id(),
                'type'            => 'page',
                'action'        => 'deleted',
                'user_id'        => $this->session->userdata('user_id'),
                'message'        => 'A page was deleted'
            );

            // Insert Activity
            $this->Activity_model->add($data);

            // Set Message
            $this->session->set_flashdata('success', 'Page has been deleted');

            // Redirect
            redirect('admin/pages');
    }
} 

the problem comes from the controller users_controller. I already created an account with some data and that data should at least allow me to have access to the admin_controller which it does not, instead it redirects me to the admin/login form.

I would like to say that for some reason when I tried to add a page, I get an error message saying that user_id cannot be null, but as I'm "supposed" to be logged in that error should not appear. Any knows how to fix it?

erro message:
Quote:Error Number: 1048
Column 'user_id' cannot be null
INSERT INTO `pages` (`title`, `slug`, `subject_id`, `body`, `is_published`, `is_featured`, `in_menu`, `user_id`, `order`) VALUES ('Page One', 'page-one', '1', '
thrhjtyjrjrj
', '1', '0', '1', NULL, '1')

Filename: C:/xampp/htdocs/codeigniter/application/models/page_model.php
Line Number: 20

Users_controller:
PHP Code:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Users extends CI_Controller {
    function __construct(){
        parent::__construct();
    }

    public function index(){
        // Check Login
        if(!$this->session->userdata('logged_in')){
            redirect('admin/login');
        }

        $data['users'] = $this->User_model->get_list();
        // Load template
        $this->template->load('admin', 'default', 'users/index', $data);
    }

    public function add(){
        // Check Login
        if(!$this->session->userdata('logged_in')){
            redirect('admin/login');
        }

        $this->form_validation->set_rules('first_name','First Name','trim|required|min_length[2]');
        $this->form_validation->set_rules('last_name','Last Name','trim|required|min_length[2]');
        $this->form_validation->set_rules('username','Username','trim|required|min_length[4]');
        $this->form_validation->set_rules('email','Email','trim|required|min_length[7]|valid_email');
        $this->form_validation->set_rules('password','Password','trim|required|min_length[4]|matches[password2]');
        $this->form_validation->set_rules('password2','Confirm Password','trim|required|min_length[6]|matches[password2]');

        if ($this->form_validation->run() == FALSE){
            // Load View Into Template
            $this->template->load('admin','default','users/add');
        } else {
            // Create Page Data Array
            $data = array(
                'first_name'    => $this->input->post('first_name'),
                'last_name'     => $this->input->post('last_name'),
                'email'         => $this->input->post('email'),
                'username'      => $this->input->post('username'),
                'password'      => md5($this->input->post('password'))
            );   

            // Add User
            $this->User_model->add($data);

            //Activity Array
            $data = array(
                'resource_id'   =>  $this->db->insert_id(),
                'type'          => 'user',
                'action'        => 'added',
                'user_id'       => $this->session->userdata('user_id'),
                'message'       => 'A new user was added ('.$data["username"].')'
            ); 

            // Add Activity  
            $this->Activity_model->add($data);

            // Create Message
            $this->session->set_flashdata('success', 'User has been added');
            
            // Redirect to pages
            redirect('admin/users');
        }
    }

    public function edit($id){
        // Check Login
        if(!$this->session->userdata('logged_in')){
            redirect('admin/login');
        }

        $this->form_validation->set_rules('first_name','First Name','trim|required|min_length[2]');
        $this->form_validation->set_rules('last_name','Last Name','trim|required|min_length[2]');
        $this->form_validation->set_rules('username','Username','trim|required|min_length[4]');
        $this->form_validation->set_rules('email','Email','trim|required|min_length[7]|valid_email');

        if ($this->form_validation->run() == FALSE){
            // Get Current Subject
            $data['item'] = $this->User_model->get($id);
            //Load View Into Template
            $this->template->load('admin','default','users/edit', $data);
        } else {
            // Create User Data Array
            $data = array(
                'first_name'    => $this->input->post('first_name'),
                'last_name'     => $this->input->post('last_name'),
                'email'         => $this->input->post('email'),
                'username'      => $this->input->post('username')
            );   

            // Update User
            $this->User_model->update($id, $data);

            // Activity Array
            $data = array(
                'resource_id'   =>  $this->db->insert_id(),
                'type'          => 'user',
                'action'        => 'updated',
                'user_id'       => $this->session->userdata('user_id'),
                'message'       => 'A user was updated ('.$data["username"].')'
            ); 

            // Add Activity  
            $this->Activity_model->add($data);

            //Create Message
            $this->session->set_flashdata('success', 'User has been updated');
            
            //Redirect to Users
            redirect('admin/users');
        }
    }

    public function delete($id){
        // Check Login
        if(!$this->session->userdata('logged_in')){
            redirect('admin/login');
        }
        
        // Get Username
        $username = $this->User_model->get($id)->username;

        // Delete User
        $this->User_model->delete($id);

        // Activity Array
        $data = array(
            'resource_id'   =>  $this->db->insert_id(),
            'type'          => 'user',
            'action'        => 'deleted',
            'user_id'       => $this->session->userdata('user_id'),
            'message'       => 'A user was deleted'
        ); 

        // Add Activity  
        $this->Activity_model->add($data);
     
        // Create Message
        $this->session->set_flashdata('success', 'User has been deleted');
        
        // Redirect to Subjects
        redirect('admin/users');
    }

    public function login(){
        $this->form_validation->set_rules('username','Username','trim|required|min_length[4]');
        $this->form_validation->set_rules('password','Password','trim|required|min_length[4]');


        if ($this->form_validation->run() == FALSE){
            //Load View Into Template
            $this->template->load('admin','login','users/login');
        } else {
           // Get Post Data
            $username = $this->input->post('username');
            $password = $this->input->post('password');
            $enc_password = md5($password);

            $user_id = $this->User_model->login($username, $enc_password);

            if($user_id){
                $user_data = array(
                    'user_id' => $user_id,
                    'username'  => $username,
                    'logged_in' => true
                );

                // Set Session Data
                $this->session->set_userdata($user_data);

                // Create Message
                $this->session->set_flashdata('success', 'You are logged in');
            
                // Redirect to pages
                redirect('admin');
            } else {
                // Create Error
                $this->session->set_flashdata('error', 'Invalid Login');
                
                // Redirect to pages
                redirect('admin/users/login');
            }
        }
    }
    
        public function register(){

        $this->form_validation->set_rules('first_name','First Name','trim|required|min_length[2]');
        $this->form_validation->set_rules('last_name','Last Name','trim|required|min_length[2]');
        $this->form_validation->set_rules('username','Username','trim|required|min_length[4]');
        $this->form_validation->set_rules('email','Email','trim|required|min_length[7]|valid_email');
        $this->form_validation->set_rules('password','Password','trim|required|min_length[4]|matches[password2]');
        $this->form_validation->set_rules('password2','Confirm Password','trim|required|min_length[6]|matches[password2]');

        if ($this->form_validation->run() == FALSE){
            // Load View Into Template
            $this->template->load('admin','login','users/register');
        } else {
            // Create Page Data Array
            $data = array(
                'first_name'    => $this->input->post('first_name'),
                'last_name'     => $this->input->post('last_name'),
                'email'         => $this->input->post('email'),
                'username'      => $this->input->post('username'),
                'password'      => md5($this->input->post('password'))
            );   

            // Add User
            $this->User_model->add($data);

            //Activity Array
            $data = array(
                'resource_id'   =>  $this->db->insert_id(),
                'type'          => 'user',
                'action'        => 'registered',
                'user_id'       => $this->session->userdata('username'),
                'message'       => 'A new user was registered ('.$data["username"].')'
            ); 

            // Add Activity  
            $this->Activity_model->add($data);

            // Create Message
            $this->session->set_flashdata('success', 'User has been registered');
            
            // Redirect to pages
            redirect('admin/users/login');
        }
    }

    public function logout(){
        $this->session->unset_userdata('logged_in');
        $this->session->unset_userdata('user_id');
        $this->session->unset_userdata('username');
        $this->session->sess_destroy();

        // Message
        $this->session->set_flashdata('success', 'You are logged out');
        redirect(base_url());
    }
} 
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