adding checkbox array to kohana orm validate - php

Question

Having trouble adding checkbox values to db via orm
Working for normal fields but not if more than one checkbox is selected on the checkbox questions that allow more than one option
Here is the Form bit
<?php echo Form::label('first_name', 'First Name')?><br />
<?php echo Form::input('first_name', $profile->first_name, array('class'=>'inputbox')); ?><br />
<?php echo Form::label('last_name', 'Last Name')?><br />
<?php echo Form::input('last_name', $profile->last_name, array('class'=>'inputbox')); ?><br />
Favorite Genres:
<label><input type="checkbox" value="Horror" name="genres[]" />
<strong>Horror</strong></label><br />
<label><input type="checkbox" value="Thriller" name="genres[]" />
<strong>Thriller</strong></label><br />
Here is the controller bit
if ($_POST) {
if ($profile->values($_POST)->check()) {
$profile->user_id = $user;
$profile->save();
}
}
And Here is the Model bit
protected $_rules = array(
'first_name' => array(
'not_empty' => NULL,
),
'last_name' => array(
'not_empty' => NULL,
),
);
Only not working when more than one checkbox is selected, I get this error
Database_Exception [ 1241 ]: Operand should contain 1 column(s)
Not sure best approach for this.. Should I serialize or implode ? Where to do this?
I want to build basic search form in future to search 'like' values using this column.

Answer 1

This is an DB exception, not a Validation. You should use ORM relations for this situation:
class Model_Profile extends ORM {
protected $_has_many = array(
// profile has and belongs to many genres
'genres' => array(
'through' => 'profiles_genres', // pivot table name
),
);
}
And then change genres for current profile, like this:
try
{
$profile->check();
$profile->save();
// now replace old genres with a new list
// clear genres
$profile->remove('genres');
foreach($this->request->post('genres') as $genre)
{
$genre = ORM::factory('genre')->where('name', '=', $genre);
if ($genre->loaded())
{
$profile->add('genres', $genre);
}
}
}
catch (Validate_Exception)
{
// wrong input
}
Note that not genres are separated table, not a profiles column. Also you will need a pivot table profiles_genres with profile_id and genre_id columns.

Answer 2

You should create a genres table and model and create a pivot table for genres and profiles:
CREATE TABLE IF NOT EXISTS `genres` (
`id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `uniq_name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE IF NOT EXISTS `genres_profiles` (
`profile_id` int(10) UNSIGNED NOT NULL,
`genre_id` int(10) UNSIGNED NOT NULL,
PRIMARY KEY (`profile_id`,`genre_id`),
KEY `fk_genre_id` (`genre_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Note that you don't need to create ORM model for pivot table.
You can find more in the official docs