Passing checkbox values to mysql database using Codeigniter - mysql

Question

I'm using CodeIgniter and mySQL to build a checkbox form. The form contains 4 options; each option has only one checkbox; users can select any combination of the options. I want to do the following:
1 - For each checkbox, use a value of 1 (if unchecked) or 2 (if checked) and pass those values through to the database (each checkbox has its own field). Right now, whether checked or unchecked, the checkboxes are sending a value of 0 through to the database.
2 - Once users update their checkboxes, I'd like to update the database to reflect the new values. Right now, a new row is added for each update to the checkboxes.
What I've got so far is a form that submits the checkbox values to the database, a controller, and a model):
Form
<?php echo form_open('addFoo'); ?>
<input type="checkbox" name="foo1" value="" />
<input type="checkbox" name="foo2" value="" />
<input type="checkbox" name="foo3" value="" />
<input type="checkbox" name="foo4" value="" />
<?php echo form_submit('submit', 'Save Changes'); ?>
<?php echo form_close(); ?>
Controller
function addFoo()
{
if ($this->input->post('submit')) {
$id = $this->input->post('id');
$foo1 = $this->input->post('foo1');
$foo2 = $this->input->post('foo2');
$foo3 = $this->input->post('foo3');
$foo4 = $this->input->post ('foo4');
$this->load->model('foo_model');
$this->foo_model->addFoo($id, $foo1, $foo2, $foo3, $foo4);
}
}
Model
function addFoo($id, $foo1, $foo2, $foo3, $foo4) {
$data = array(
'id' => $id,
'foo1' => $foo1,
'foo2' => $foo2,
'foo3' => $foo3,
'foo4' => $foo4
);
$this->db->insert('foo_table', $data);
}

Answer 1

At your Controller :
if you want to insert new entry for all selected checkbox:
foreach($this->input->post('foo') as $r)
{
$data['fieldname']=$r;
$this->model_name->insert($data);
}
if you want to insert all selected checkbox values in different fields within single entry then,
foreach($this->input->post('foo') as $key=>$val)
{
$data['field'.$key]=$val;
}
$this->model_name->insert($data);

Answer 2

Well in reference to setting the values, a checkbox doesn't send anything if unchecked. To achieve what you want, you have to do this:
<input type="checkbox" name="foo[]" value="1" />
<input type="checkbox" name="foo[]" value="2" />
This will send a value regardless of whether the checkbox is checked or not.

Answer 3

use the different values for each checkbox and get the value of checkbox array and use this in your controller print_r($this->input->post('foo')); it will print the values that are selected by user
use like this
<?php
if (isset($_POST['submit'])){
print_r($_POST['foo']);
}
?>
<form action="" method="POST">
<input type="checkbox" name="foo[]" value="1">1<br>
<input type="checkbox" name="foo[]" value="2">2<br>
<input type="checkbox" name="foo[]" value="3">3<br>
<input type="checkbox" name="foo[]" value="4">4<br>
<input type="submit" value="submit" name="submit">
</form>