Drupal 5: Adding terms and conditions to the user registration form

The following will show you how to add a terms and conditions form element and admin settings page to display a required terms and conditions form element on the user registration form. First, I added an admin settings page.

<?php
function MYMODULE_admin_settings_form() {
  $form = array();
  // ...code...
  $form['MYMODULE_terms_conditions'] = array(
    '#type'             => 'textarea',
    '#title'            => t('Terms and Conditions'),
    '#default_value'    => variable_get('MYMODULE_terms_conditions', ''),
    '#required'         => FALSE,
  );
  // ...code...
  return system_settings_form($form);
}
?>

Next I modified the user registration form.

<?php
function MYMODULE_form_alter($form_id, &$form) {
  // ...code...
  if ($form_id == 'user_register') {
    $terms = variable_get('MYMODULE_terms_conditions', '');
    if (strlen($terms)) {
      // add terms and conditions
      $form['terms'] = array(
        '#type' => 'checkbox',
        '#required' => TRUE,
        '#weight' => 9,
        '#title' => "I agree to the <a id='termsAndConditionsLink'>terms and conditions</a><div style='display:none;' id='termsAndConditionsText'>$terms</div>",
      );
    }
  }
  // ...code...
}
?>

Last I added some jQuery to my module’s javascript include file.

$(document).ready(function(){
  $('a#termsAndConditionsLink').click(function() {
    if ($('div#termsAndConditionsText').css('display') == 'none') {
      $('div#termsAndConditionsText').slideDown();
    } else {
      $('div#termsAndConditionsText').slideUp();
    }
  });
});