Go back to your news controller. You're going to do two things here, check whether the form was submitted and whether the submitted data passed the validation rules. You'll use the form validation library to do this.

-function create() +public function create() { $this->load->helper('form'); $this->load->library('form_validation'); @@ -112,7 +112,6 @@ function create() $this->news_model->set_news(); $this->load->view('news/success'); } - }

The only thing that remains is writing a method that writes the data to the database. You'll use the Active Record class to insert the information and use the input library to get the posted data. Open up the model created earlier and add the following:

In order to load these pages we'll have to check whether these page actually exists. When the page does exist, we load the view for that pages, including the header and footer and display it to the user. If it doesn't, we show a "404 Page not found" error.

+ + +

Tutorial − Introduction

+ +

This tutorial is intended to introduce you to the CodeIgniter framework and the basic principles of MVC architecture. It will show you how a basic CodeIgniter application is constructed in step-by-step fashion.

+ +

In this tutorial, you will be creating a basic news application. You will begin by writing the code that can load static pages. Next, you will create a news section that reads news items from a database. Finally, you'll add a form to create news items in the database.

+ +

This tutorial will primarily focus on:

Model-View-Controller basics
Routing basics
Form validation
Performing basic database queries using "Active Record"

+ +

The entire tutorial is split up over several pages, each explaining a small part of the functionality of the CodeIgniter framework. You'll go through the following pages:

Introduction, this page, which gives you an overview of what to expect.
Static pages, which will teach you the basics of controllers, views and routing.
News section, where you'll start using models and will be doing some basic database operations.
Create news items, which will introduce more advanced database operations and form validation.
Conclusion, which will give you some pointers on further reading and other resources.

+ +

Enjoy your exploration of the CodeIgniter framework.

+ +

- - -

Tutorial − Introduction

- -

This tutorial will primarily focus on:

Model-View-Controller basics
Routing basics
Form validation
Performing basic database queries using "Active Record"

- -

The entire tutorial is split up over several pages, each explaining a small part of the functionality of the CodeIgniter framework. You'll go through the following pages:

Introduction, this page, which gives you an overview of what to expect.
Static pages, which will teach you the basics of controllers, views and routing.
News section, where you'll start using models and will be doing some basic database operations.
Create news items, which will introduce more advanced database operations and form validation.
Conclusion, which will give you some pointers on further reading and other resources.

- -

Enjoy your exploration of the CodeIgniter framework.

- -

Now that the database and a model have been set up, you'll need a method to get all of our posts from our database. To do this, the database abstraction layer that is included with CodeIgniter — Active Record — is used. This makes it possible to write your 'queries' once and make them work on all supported database systems. Add the following code to your model.

-function get_news($slug = FALSE) +public function get_news($slug = FALSE) { if ($slug === FALSE) { $query = $this->db->get('news'); return $query->result_array(); - } $query = $this->db->get_where('news', array('slug' => $slug)); return $query->row_array(); - }

<?php -class News extends CI_Controller{ +class News extends CI_Controller { - function __construct() + public function __construct() { parent::__construct(); $this->load->model('news_model'); - } - function index() + public function index() { $data['news'] = $this->news_model->get_news(); - } - function view($slug) + public function view($slug) { $data['news'] = $this->news_model->get_news($slug); - } - }

Now the data is retrieved by the controller through our model, but nothing is displayed yet. The next thing to do is passing this data to the views.

-function index() +public function index() { $data['news'] = $this->news_model->get_news(); $data['title'] = 'News archive'; @@ -159,7 +152,6 @@ function index() $this->load->view('templates/header', $data); $this->load->view('news/index', $data); $this->load->view('templates/footer'); - }

The news overview page is now done, but a page to display individual news items is still absent. The model created earlier is made in such way that it can easily be used for this functionality. You only need to add some code to the controller and create a new view. Go back to the news controller and add the following lines to the file.

-function view($slug) +public function view($slug) { $data['news_item'] = $this->news_model->get_news($slug); @@ -196,7 +188,6 @@ function view($slug) $this->load->view('templates/header', $data); $this->load->view('news/view', $data); $this->load->view('templates/footer'); - }

In order to load those pages, you'll have to check whether the requested page actually exists:

-function view($page = 'home') +public function view($page = 'home') { - if ( ! file_exists('application/views/pages/' . $page . '.php')) + if ( ! file_exists('application/views/pages/'.$page.'.php')) { // Whoops, we don't have a page for that! show_404(); @@ -146,10 +146,10 @@ function view($page = 'home') $data['title'] = ucfirst($page); // Capitalize the first letter $this->load->view('templates/header', $data); - $this->load->view('pages/' . $page, $data); + $this->load->view('pages/'.$page, $data); $this->load->view('templates/footer', $data); - -} + +}

Now, when the page does exist, it is loaded, including the header and footer, and displayed to the user. If the page doesn't exist, a "404 Page not found" error is shown.

Tutorial

Tutorial

CodeIgniter User Guide Version 2.0.3

Tutorial − Introduction

CodeIgniter User Guide Version 2.0.3

Tutorial − Introduction