Issues in Codeigniter - php

Question

I have been trying to learn CI and implement a blog content management system following a lightweight tutorial I found online today, but I'm currently experiencing some problems in the view.
Adding new entries "works", but I get the following errors on top of the add_new page:
http://pastebin.com/4UhMTqLj
CONTROLLER
function new_entry()
{
$this->load->helper('form');
$this->load->library(array('form_validation','session'));
//set validation rules
$this->form_validation->set_rules('entry_name', 'Title', 'required|xss_clean|max_length[200]');
$this->form_validation->set_rules('entry_body', 'Body', 'required|xss_clean');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('header', $data);
$this->load->view('admin/new_entry', $data);
$this->load->view('footer', $data);
}
else
{
//if valid
$name = $this->input->post('entry_name');
$body = $this->input->post('entry_body');
$this->articles_model->new_entry($name,$body);
$this->session->set_flashdata('message', '1 new entry added!');
redirect('articles/new_entry');
}
}
VIEW
<h2>Add new entry</h2>
<?php echo validation_errors(); ?>
<?php if($this->session->flashdata('message')){echo $this->session->flashdata('message');}?>
<?php echo form_open('articles/new_entry');?>
<p>Title:<br />
<input type="text" name="entry_name" />
</p>
<p>Body:<br />
<textarea name="entry_body" rows="5" cols="50" style="resize:none;"></textarea>
</p>
<input type="submit" value="Submit" />
<?php echo form_close();?>
MODEL
function new_entry($name,$body)
{
$data = array(
'entry_name' => $name,
'entry_body' => $body
);
$this->db->insert('entry',$data);
}
What can be the cause?
Edit: I'm using Codeigniter 3.

Answer 1

You must initiate the $data variable before passing in to the views.
eg.
$data = array();
put it on the new entry class

Answer 2

I completely agree with the answer from Cha Hernandez, however, another possibility would be:
To remove the $data variable altogether:
$this->load->view('header');
$this->load->view('admin/new_entry');
$this->load->view('footer');
This is mainly because you're not actually passing any information to the view, so there is no point in having it in the instance.
Hope this helps!

Answer 3

Change your CONTROLLER TO file below code where i removed variable $data since it is not assigned to any values and passing undefined variable $data is not necessary.
function new_entry()
{
$this->load->helper('form');
$this->load->library(array('form_validation','session'));
//set validation rules
$this->form_validation->set_rules('entry_name', 'Title', 'required|xss_clean|max_length[200]');
$this->form_validation->set_rules('entry_body', 'Body', 'required|xss_clean');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('header');
$this->load->view('admin/new_entry');
$this->load->view('footer');
}
else
{
//if valid
$name = $this->input->post('entry_name');
$body = $this->input->post('entry_body');
$this->articles_model->new_entry($name,$body);
$this->session->set_flashdata('message', '1 new entry added!');
redirect('articles/new_entry');
}
}