CakePHP disable some radio buttons? - php

Question

I have a simple form with some radio buttons. I want to disable some of the radio buttons, is this possible?
$sixMonths = true;
$twelveMonths = true;
$twentyfourMonths = false;
echo $this->McForm->create('Wizard', array ('url'=>'/wizard/create'));
$options = array('24' => '24 months','12' => '12 months', '6' => '6 months');
$attributes = array('legend' =>false, 'default' => '6');
echo $this->McForm->radio('period', $options, $attributes);
echo $this->McForm->submit('Save');
echo $this->McForm->end();
So in this case I'd like to disable the first radio button and enable the other two.
I know I could probably do it with jQuery, but I'd prefer to do it without using it, is it possible?
Any ideas?
Thanks!

Answer 1

You can add a disabled array in $attributes that contains the values ​​of the radios:
$attributes = [
'legend' => false,
'default' => '6',
'disabled' => ['6', '24']
];

Answer 2

This isn't possible unless you call the radio function for each option separately and add 'disabled' => 'disabled' to the $attributes array for the ones you wish to disable. Here's a possible solution:
// Options
$options = array('24' => '24 months','12' => '12 months', '6' => '6 months');
// Disabled options
$disabled_options = array('12');
// Default attributes (these may need to be adjusted)
$attributes = array('legend' => false, 'default' => '6');
// Loop through all of the options
foreach ( $options as $key => $value )
{
// Output the radio button.
// The field name is now "period.n" which will result in "data[Model][period][n]" where "n" is the number of months.
// The options is an array contain only the current $key and $value.
// The 'disabled' => 'disabled' is added to the attributes if the key is found in the $disabled_options array.
echo $this->McForm->radio('period.' . $key, array($key => $value), ( in_array($key, $disabled_options) ? $attributes + array('disabled' => 'disabled') : $attributes ));
}