passing the input name (comes from database) from view to controller - php

Question

I'm trying to learn codeigniter, the first thing i did is to make simple add edit delete function...
I'm having trouble calling the name of input button to the controller to delete an entire row of table..
model
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Delete_model extends CI_Model{
public function delete($data){
$this->db->delete('record_tbl', $data);
}
}
controller
class Delete_controller extends CI_Controller {
public function index()
{
$this->delete();
}
public function delete()
{
$data = array();
$this->load->model('fetch');
$query = $this->fetch->getData();
if ($query)
{
$data['results'] = $query;
}
$this->load->view('delete', $data);
}
public function delete_data(){
$this->load->model('delete_model');
$where = $this->input->get('id');
$data['id'] = $where;
$this->delete_model->delete($data);
redirect('');
}
}
view
<table border="1" width="100%">
<tr>
<th>Name</th>
<th>Address</th>
<th>Phone Number</th>
<th>Status</th>
<th></th>
</tr>
<?php foreach($results as $row) { ?>
<tr>
<td><?=$row->name?></td>
<td><?=$row->addr?></td>
<td><?=$row->pnum?></td>
<td><?=$row->status?></td>
<?php echo form_open('delete_controller/delete_data') ?>
<td style="text-align: center"><input name="<?=$row->id?>" type="submit" value="delete"></input>
</form>
</td>
</tr>
<?php } ?>
</table>

Answer 1

Your form will be doing a POST rather than a GET request. So rather than doing
$where = $this->input->get('id');
You want to do
$where = $this->input->post('id');
Also why don't you pass the value of $row->id to your controller so that you know which input field to target. So in your view do
<?php echo form_open('delete_controller/delete_data/' . $row->id) ?>
Then in your controller
public function delete_data($id){
$this->load->model('delete_model');
$where = $this->input->post($id);
//...

Answer 2

It's going to be $this->input->post ('id') like #Pattle says and you are using the "name" attribute of the form for the ID. What I usually do is use a hidden field (see form_hidden () helper in CI documentation) with the name "id" and the value you want ($row->id).
<?php echo form_hidden ('id', $row->id); ?>

Answer 3

Instead of $this->input->get('id'); use $this->input->post('id');.
And to simplify things up: I probably recommend using <button></button> as control buttons like delete functionality (it also works on edit/update FYI).
Coz you can just add attribute to a button value = $id and name=delete. And it would be like an <input type='submit'> just by adding an attribute of type='submit'
So
VIEW
<table border="1" width="100%">
<tr>
<th>Name</th>
<th>Address</th>
<th>Phone Number</th>
<th>Status</th>
<th></th>
</tr>
<?php foreach($results as $row) { ?>
<tr>
<td><?=$row->name?></td>
<td><?=$row->addr?></td>
<td><?=$row->pnum?></td>
<td><?=$row->status?></td>
<?php echo form_open('delete_controller/delete_data') ?>
<td style="text-align: center">
<?php
echo "<button type='submit' name='delete' value='" . $row->id . "'>" ;
echo "DELETE" ;
echo "</button>" ;
?>
</form>
</td>
</tr>
<?php } ?>
</table>
Then it would be very simple to fetch the id of the row you want to delete. Just do this in your controller $id = $_POST['delete']; or $id = $this->input->post('delete');