===== radio_button =====
**Syntax: **\\
$form_helper->radio_button( $object_name, [ $column_name ], $tag_value, [ $options ])
**Description: **\\
The radio buttons in a group will all have the same $object_name and $column_name. $tag_value will be different for each button. The button whose $column_name is equal to the $tag_value will be checked.
Additional options are to be passed as an $options array.
**Example: **\\
$form_helper->radio_button("post", "category", "PHP");
$form_helper->radio_button("post", "category", "Ruby");
if the default $Post->category() is "PHP", the code generated is
===== radio_button_tag =====
**Syntax: **\\
$form_tag_helper->radio_button_tag( $name, $value, [ $checked ], [ $options ])
**Description:**\\
The radio buttons in a group will all have the same $name. $value will be different for each button. $checked defaults to **false**.\\
Additional options are to be passed as an $options array.