Club Drupal

<?php

/**

 * @file

 * Implementations of administration functions for the acl module.

 */

/**

 * Implementation of acl_edit_form().

 */

function _acl_edit_form($acl_id, $label = NULL, $new_acl = FALSE) {

  $users = array();

  if (!$new_acl) {

    // Ensure the ACL in question even exists.

    if (!($record = db_query("SELECT name, number FROM {acl} WHERE acl_id = :acl_id", array(

      'acl_id' => $acl_id,

    ))->fetchAssoc())) {

      return array();

    }

    $result = db_query("SELECT u.uid, u.name FROM {users} u LEFT JOIN {acl_user} aclu ON aclu.uid = u.uid WHERE acl_id = :acl_id", array(

      'acl_id' => $acl_id));

    foreach ($result as $user) {

      $users[$user->uid] = $user->name;

    }

  }

  if (!isset($label)) {

    $label = (isset($record['name']) ? $record['name'] : (isset($record['number']) ? $record['number'] : $acl_id));

  }

  $form = array(

    '#type' => 'fieldset',

    '#collapsible' => TRUE,

    '#title' => $label,

    '#tree' => TRUE,

  );

  $form['acl_id'] = array(

    '#type' => 'value',

    '#value' => $acl_id,

  );

  $form['deletions'] = array(

    '#type' => 'checkboxes',

    '#options' => array(),

  ); // placeholder

  $form['delete_button'] = array(

    '#type' => 'button',

    '#name' => 'acl_' . $acl_id,

    '#value' => t('Remove Checked'),

    '#submit' => FALSE,

  );

  $form['add'] = array(

    '#type' => 'textfield',

    '#title' => t('Add user'),

    '#maxlength' => 60,

    '#size' => 40,

    '#autocomplete_path' => 'user/autocomplete',

  );

  $form['add_button'] = array(

    '#type' => 'button',

    '#name' => 'acl_' . $acl_id,

    '#value' => t('Add User'),

    '#submit' => FALSE,

  );

  $form['user_list'] = array(

    '#type' => 'hidden',

    '#default_value' => serialize($users),

  );

  $form['#after_build'] = array('_acl_edit_form_after_build');

  return $form;

}

/**

 * Process a form that had our buttons on it.

 */

function _acl_edit_form_after_build($form, &$form_state) {

  // We can't use the form values because it's the entire structure

  // and we have no clue where our values actually are. That's

  // ok tho cause #value still works for us.

  $user_list = unserialize($form['user_list']['#value']);

  $button_name = 'acl_' . $form['acl_id']['#value'];

  if (isset($form_state['triggering_element']) && $form_state['triggering_element']['#value'] == $form['delete_button']['#value']) {

    $deletions = $form['deletions']['#value'];

    foreach ($deletions as $uid) {

      unset($user_list[$uid]);

      unset($form['deletions']['#value'][$uid]);

    }

  }

  elseif (isset($form_state['triggering_element']) && $form_state['triggering_element']['#value'] == $form['add_button']['#value'] && !empty($form['add']['#value'])) {

    $user = db_query("SELECT uid, name FROM {users} WHERE name = :name", array(

      'name' => $form['add']['#value'],

    ))->fetchObject();

    if (!$user || !$user->uid) {

      form_error($form['add'], t("Invalid user specified."));

    }

    else {

      $user_list[$user->uid] = $user->name;

      $form['add']['#value'] = NULL;

    }

  }

  if (count($user_list) != 0) {

    $form['deletions']['#type'] = 'checkboxes';

    $form['deletions']['#title'] = t("Current users");

    $form['deletions']['#options'] = $user_list;

    $form['deletions']['#value'] = array(); // don't carry value through.

    $form['deletions'] = form_builder(!empty($form['#post']) ? $form['#post']['form_id'] : 'acl_form', $form['deletions'], $form_state);

  }

  else {

    $form['delete_button']['#type'] = 'value';

  }

  $form['user_list']['#value'] = serialize($user_list);

  return $form;

}

/**

 * Write the results of a form.

 *

 * The module that embedded our form must call this function!

 */

function acl_save_form($form, $priority = NULL) {

  $users = unserialize($form['user_list']);

  db_delete('acl_user')

    ->condition('acl_id', $form['acl_id'])

    ->execute();

  foreach ($users as $uid => $name) {

    db_insert('acl_user')

    ->fields(array(

      'acl_id' => $form['acl_id'],

      'uid' => $uid,

    ))

    ->execute();

  }

  if (isset($priority)) {

    db_update('acl_node')

      ->fields(array(

        'priority' => $priority,

      ))

      ->condition('acl_id', $form['acl_id'])

      ->execute();

  }

}