Message: Undefined variable: data

Question

When I try to run the following application in CodeIgniter, I get the following error:

A PHP Error was encountered
Severity: Notice
Message: Undefined variable: data
Filename: views/blog.php
Line Number: 1

I've been trying to figure it out for almost an hour and I can't get it to work. My view looks like this:

<?php foreach($data->result() as $row): ?>
<h1><?php echo $row->title; ?></h1>
<p><?php echo $row->post; ?></p>
<?php endforeach; ?>

My controller looks like this:

<?php
    class Blog extends CI_Controller {  
    public function index()
    {
        $this->load->database();
        $data = $this->db->get('posts');

        $this->load->helper('url');
        $this->load->view('header');
        $this->load->view('blog', $data);
        $this->load->view('footer');
    }
}

Anyone know how to fix this?

$data does not set, did you really set this variable?

Shakti Singh
– Shakti Singh

2011-10-26 16:01:55 +00:00
Commented Oct 26, 2011 at 16:01 — Shakti Singh
– Shakti Singh, Commented Oct 26, 2011 at 16:01
$data = $this->db->get('posts'); ?

johntheripper
– johntheripper

2011-10-26 16:06:06 +00:00
Commented Oct 26, 2011 at 16:06 — johntheripper
– johntheripper, Commented Oct 26, 2011 at 16:06

onatm · Accepted Answer · 2011-10-26 16:08:39Z

5

You have to change your controller and view

the array you send throught data should be like this:

$data['post'] = $this->db->get('posts');

and in your view:

<?php foreach($post->result() as $row): ?>
<h1><?php echo $row->title; ?></h1>
<p><?php echo $row->post; ?></p>
<?php endforeach; ?>

codeiginter sends variables to view using $data array. If you want to send something to a view, put inside to $data as $data['key'] = $val;

answered Oct 26, 2011 at 16:08

onatm♦

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Comments

powtac · Accepted Answer · 2011-10-26 16:07:56Z

0

Try to use $blog instead of $data in the first line of your view.
I'm not sure but you assign $data to a key called blog in your controller...

answered Oct 26, 2011 at 16:07

powtac

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Comments

vicentazo · Accepted Answer · 2011-10-26 16:08:05Z

0

The variables must be passed to the view as key-value pairs inside an array. Here this is explained.

answered Oct 26, 2011 at 16:08

vicentazo

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Comments

Jhourlad Estrella · Accepted Answer · 2011-10-26 16:12:39Z

0

I think the error notice is not originating on your controller but on your view (blog.php). You forgot to pass $data to the view. You should restructure the variable being passed to your view to something like this:

$data['data'] = $this->db->get('posts');
$this->load->view('blog', $data);

answered Oct 26, 2011 at 16:12

Jhourlad Estrella

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Comments

IAMSTR · Accepted Answer · 2019-04-19 00:48:19Z

0

please structure your post model like this


        public function __construct()
        {
                $this->load->database();

        }




    public function get_posts(){




            $query=$this->db->get('posts');
            return $query->result_array();







    }

    }

and your post controller like this


      public function index()
            {

           $data['posts']=$this->Post_model->get_posts();  





        $this->load->view('templates/header');
        $this->load->view('posts/index.php', $data);
        $this->load->view('templates/footer');

}

and in your view file echo content this way :)


<?php foreach($posts as $post): ?>


<h3><?php echo  $post['post_title'];?></h3>
<small><?php echo  $post['post_date'];?></small>
<p><a href="<?php echo site_url('/posts/'.$post['post_title']);?>">Read more</a></p>

<?php   endforeach;?>

answered Apr 19, 2019 at 0:48

IAMSTR

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1 Comment

Vega Over a year ago

So basically, your answer is to confirm the accepted answer and the only useful line is : $data = $this->db->get('posts');

Suraj Rao · Accepted Answer · 2023-01-11 12:04:43Z

0

In the controller file, if you want to eliminate this error, write

$data['variable-name']

then in the view file, instead of using $data, use $variable_name i.e

<?php foreach($variable_name->result() as $row): ?>

edited Jan 11, 2023 at 12:04

Suraj Rao

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answered Jan 11, 2023 at 12:02

Zoya Azam

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