error read data in codeigniter - php

Question

i have an applicataion that must to read data from database. i think it simple but why i still got error like this :
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: data
Filename: views/detail_usulan.php
i have tried to repair this code but its still cant work. i'll show u my code. i need your help:(
My controller :
function detail_usulan(){
$data = array('model_usulan' => $this->model_usulan->get_all());
//$this->load->view('usulan/detail_usulan', $data);
$this->render('usulan/detail_usulan', $data);
}
My models :
class model_usulan extends MY_Model{
function get_all(){
return $this->db->get('usulan_rkau');
}
}
My view :
<?php foreach ($data as $view_data) { ?>
<tr>
<th> Tahun : </th>
<td><?php echo $view_data->tahun; ?></td>
</tr>

Answer 1

You could just try it like below on controller instead of it begin in an array()
$data['model_usulan'] = $this->model_usulan->get_all();
$this->load->view('usulan/detail_usulan', $data);
On your view change this $data
<?php foreach ($data as $view_data) { ?>
<tr>
<th> Tahun : </th>
<td><?php echo $view_data->tahun; ?></td>
</tr>
<?php }?>
To $model_usulan in the array
<?php foreach ($model_usulan as $view_data) { ?>
<tr>
<th> Tahun : </th>
<td><?php echo $view_data->tahun; ?></td>
</tr>
<?php }?>
Note: Your class name and file name should have the FIRST letter upper case ONLY same applies for controllers and libraries etc
As explained here Classnames And Filenames
Filename: Model_usulan.php
<?php
class Model_usulan extends CI_Model {
}
Also On your model function try
return $this->db->get('usulan_rkau')->result();
Or
$query = $this->db->get('usulan_rkau');
return $query->result();
And may be change this
MY_Model {
To
CI_Model {

Answer 2

you need to do this change in your controller
function detail_usulan(){
$data['data'] = array('model_usulan' => $this->model_usulan->get_all());
$this->load->view('usulan/detail_usulan', $data);
//$this->render('usulan/detail_usulan', $data);
}
or
change in your view
foreach ($model_usulan as $view_data) {
Hope this will work.