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    Categories: Learn PHP Tutorials, Tips And Guides

How to Pass Data From Controller to View in CodeIgniter

A view is webpage that displays all the elements of the UI. In many cases, view is often a fragment of page (such as header, footer, widget areas and sidebars). In many cases, views can be embedded in other views. One important aspect of views is that views could not be called directly. You need to load the views through a controller. In this tutorial, I will highlight the simple, and yet very important process of how to pass data in CodeIgniter.

Create a View

Create a new text file and name it cwblogview.php. Save this file in application/views/ directory. Open the file and add the following code to it:

<html>
<head>
        <title>Blog</title>
</head>
<body>
        <h1>Welcome to Blog</h1>
</body>
</html>

Load the View

Loading a view is usually executed through the following syntax:

$this->load->view('name');

where ‘name’ is the name of the view

Noe create a controller with the name Blog.php.  This controller will contain the method for loading the view:

<?php
class Blog extends CI_Controller {

    public function index()
    {
        $this->load->view('cwblogview');
    }
}

Once you have created the controller, the URL for the view would be:

Your-domain.com/index.php/blog/

Load Multiple Views

Within a controller, CodeIgniter could handle multiple calls to the view ($this->load->view()). Check out the following code:

<?php
class Page extends CI_Controller {
    public function index()
    {
        $data['page_title'] = 'title';
        $this->load->view('header');
        $this->load->view('menu');
        $this->load->view('content', $data);
        $this->load->view('footer');
    }

}

Sort Views in Subfolders

It is easy to sort views within subfolders:

$this->load->view(‘directory_name/file_name’);

Add Dynamic Data to Views

The usual route of data transfer from controller to view is through an array or an object. The usual case is that the array or the object is passed as the second parameter of the view load method (something like the following):

$data = array(
    'title' => 'Title',
    'heading' => 'Heading',
    'message' => ' Message'
);

$this->load->view('cwblogview', $data);

The controller would look like this:

<?php
class Blog extends CI_Controller {

    public function index()
    {
        $data['title'] = "Title";
        $data['heading'] = "Heading";

        $this->load->view('cwblogview', $data);
    }
}

This is what the the view file would look like:

<html>
<head>
    <title><?php echo $title;?></title>
</head>
<body>
<h1><?php echo $heading;?></h1>
</body>
</html>

Create the Loops

Notice that the data array that is passed to the view files could be both simple variables and multi-dimensional arrays. In the case of multi-dimensional arrays, you could setup loops to generate multiple rows. For this, add the following code in the controller:

<?php
class Blog extends CI_Controller
{
    public function index()
    {
        $data['todo_list'] = array('First Object', 'Second Object', 'Third Object');
        $data['title'] = "Title";
        $data['heading'] = "Heading";
        $this->load->view('cwblogview', $data);
    }
}

Next, open up the view file and create a loop:

<html>
<head>
    <title><?php echo $title;?></title>
</head>
<body>
<h1><?php echo $heading;?></h1>
<ul>
    <?php foreach ($todo_list as $item):?>

    <li><?php echo $item;?></li>

    <?php endforeach;?>
</ul>

</body>
</html>

Returning View as Data

The behavior of this method could be further customized through an optional third parameter. Using this parameter returns data as a string instead of sending it to the browser. This is important if you need to have a dataset for processing. Setting the third parameter to TRUE will return the data. The default behavior is FALSE that sends it to the browser.

Using the third parameter, the syntax would be:

$string = $this->load->view('fileview', '', TRUE);

Conclusion

In this tutorial I have discussed how to pass data from controller to view in CodeIgniter. The process is very simple and you could easily render views through the controller.

If you need help, you could add a comment below describing your issue. I will get back to you ASAP!

Owais Alam: is the WordPress Community Manager at Cloudways - A Managed WooCommerce Hosting Platform and a seasoned PHP developer. He loves to develop all sorts of websites on WordPress and is in love with WooCommerce in particular. You can email him at owais.alam@cloudways.com