answers.notify.inc in Answers 6

Notification functions for the 'Answers' module

@author Chip Cleary

File

includes/answers.notify.inc

<?php

/**
 * @file
 * Notification functions for the 'Answers' module
 * 
 * @author Chip Cleary
 * 
 */

/* 
 * The file provides notification functions
 *    1. Notify question authors when their questions are answered (if they have so requested)
 *
 */

/*
 * Add settings to the notification form
 */
function _answers_notify_settings() {
  $form = array();
  $form['answers_notification'] = array(
    '#type' => 'fieldset',
    '#description' => t('Settings for the email which is sent to notify a question asker when a new answer is posted (if the asker asks for notification).'),
    '#title' => t('Notification Email Settings'),
  );
  $form['answers_notification']['answers_answer_notification_subject'] = array(
    '#type' => 'textfield',
    '#title' => t('Subject line'),
    '#default_value' => variable_get('answers_answer_notification_subject', ''),
    '#description' => t('Dynamic variables available: !question_user_name, !answer_user_name, !question_title, !question_url, and !site'),
    '#required' => TRUE,
  );
  $form['answers_notification']['answers_answer_notification_body'] = array(
    '#type' => 'textarea',
    '#title' => t('Body'),
    '#default_value' => variable_get('answers_answer_notification_body', ''),
    '#description' => t('Dynamic variables available: !question_user_name, !answer_user_name, !question_title, !question_url, and !site.'),
    '#required' => TRUE,
  );
  return $form;
}

/*
 * Pseudo implementation of hook_form_alter
 * (Note: This is not an actual hook but is instead called manually by answers_form_alter)
 *
 * If user is anonymous, hide the field allowing him/her to ask to be notified by email
 * This is a somewhat arduous way to do that based on http://drupal.org/node/208046
 */
function _answers_notify_form_alter(&$form, $form_state, $form_id) {
  global $user;

  // Hide the option to get notifications by email if the user is anonymous
  if ($form_id == 'question_node_form' && $user->uid == 0) {
    $form['field_notify_p'][0]['#default_value']['value'] = 0;
    $form['field_notify_p']['#prefix'] = '<div style="display: none;">';
    $form['field_notify_p']['#suffix'] = '</div>';
  }
}

/*
 * Pseudo implementation of hook_nodeapi. 
 * (Note: This is not an actual hook but is instead called manually by answers_nodeapi)
 *
 * Tasks:
 *   - When a new answer is posted, notify the question author if appropriate.
 */
function _answers_notify_nodeapi(&$node, $op, $teaser) {
  switch ($op) {
    case 'insert':
      if ($node->type == 'answer') {
        $question_id = $node->field_answer_question[0]['nid'];

        // extract the nid of the question
        if ($question_id) {
          answers_notify($question_id);
        }
      }
      break;
  }
}

/*
 * If the question author should be notified, do so
 */
function answers_notify($nid) {
  global $user;
  $question = node_load($nid);
  $notify_p = $question->field_notify_p[0]['value'];

  // extract the nid of the question
  if ($notify_p) {
    $question_user = user_load($question->uid);
    $params = array(
      '!question_user_name' => $question_user->name,
      '!answer_user_name' => $user->uid == 0 ? 'anonymous' : $user->name,
      '!question_title' => $question->title,
      '!question_url' => url('node/' . $nid, array(
        'absolute' => TRUE,
        'target' => '_blank',
      )),
      '!site' => variable_get('site_name', 'drupal'),
    );
    $subject_template = variable_get('answers_answer_notification_subject', '');
    $subject = t($subject_template, $params);
    $body_template = variable_get('answers_answer_notification_body', '');
    $body = t($body_template, $params);
    $headers['Mime-Version'] = '1.0';
    $headers['Content-Type'] = "text/html";
    $message = array(
      'headers' => $headers,
      'to' => $question_user->mail,
      'from' => variable_get('site_mail', ini_get('sendmail_from')),
      'subject' => $subject,
      'body' => $body,
    );
    drupal_mail_send($message);
  }
}

Functions

Name	Description
answers_notify
_answers_notify_form_alter
_answers_notify_nodeapi
_answers_notify_settings