drupalorg/blocks_and_nodes/advert.module

<?php
// $Id: advert.module,v 1.5 2009/01/26 19:14:02 goba Exp $

/**
 * Prefix for variable names used to store advertisements.
 */
define('ADVERT_BLOCK_BODY', 'advert_block_body_');

/**
 * List of all ad blocks. This is the only place to add blocks to if you need more.
 */
function _advert_list_blocks() {
  $list = array();

  $list[0]['forum'] = 51;
  $list[0]['title'] = t('Paid services forum ad');

  $list[1]['forum'] = 34;
  $list[1]['title'] = t('Affiliate hosting header ad');

  $list[2]['forum'] = 51;
  $list[2]['title'] = t('Affiliate paid-services Ad with Google Ad Manager');

  return $list;
}

/**
 * Get master data for a particular block, by delta.
 */
function _advert_get_block($delta) {
  $list = _advert_list_blocks();
  return $list[$delta];
}

/**
 * Implementation of hook_block().
 */
function advert_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks = array();
      foreach(_advert_list_blocks() as $block_delta => $block_data) {
        $blocks[$block_delta]['info'] = $block_data['title'];
      }
      return $blocks;

    case 'configure':
      $form = array();

      // Provide form to enter ad details.
      $form[ADVERT_BLOCK_BODY . $delta] = array(
        '#type'          => 'textarea',
        '#title'         => t('HTML and/or Javascript'),
        '#description'   => t('Enter HTML and/or Javascript to display in this block'),
        '#default_value' => variable_get(ADVERT_BLOCK_BODY . $delta, ''),
      );
      return $form;

    case 'save':
      variable_set(ADVERT_BLOCK_BODY . $delta, $edit[ADVERT_BLOCK_BODY . $delta]);
      return;

    case 'view':
      $block_data = _advert_get_block($delta);
      $forum = $block_data['forum'];
      if (advert_is_in_forum($forum)) {
        $block['subject'] = $block_data['title'];
        $block['content'] = variable_get(ADVERT_BLOCK_BODY . $delta, '');
        return $block;
      }
  }
}

/** 
 * Are we in the appropriate forum to display that ad?
 */
function advert_is_in_forum($forum_id) {
  return ((arg(0) == 'forum') && (arg(1) == $forum_id)) ||
         ((arg(0) == 'node') && is_numeric(arg(1)) && ($node = menu_get_object()) && (($node->type == 'forum') && ($node->tid == $forum_id)));
}
1	<?php
2	// $Id: advert.module,v 1.5 2009/01/26 19:14:02 goba Exp $
3
4	/**
5	* Prefix for variable names used to store advertisements.
6	*/
7	define('ADVERT_BLOCK_BODY', 'advert_block_body_');
8
9	/**
10	* List of all ad blocks. This is the only place to add blocks to if you need more.
11	*/
12	function _advert_list_blocks() {
13	$list = array();
14
15	$list[0]['forum'] = 51;
16	$list[0]['title'] = t('Paid services forum ad');
17
18	$list[1]['forum'] = 34;
19	$list[1]['title'] = t('Affiliate hosting header ad');
20
21	$list[2]['forum'] = 51;
22	$list[2]['title'] = t('Affiliate paid-services Ad with Google Ad Manager');
23
24	return $list;
25	}
26
27	/**
28	* Get master data for a particular block, by delta.
29	*/
30	function _advert_get_block($delta) {
31	$list = _advert_list_blocks();
32	return $list[$delta];
33	}
34
35	/**
36	* Implementation of hook_block().
37	*/
38	function advert_block($op = 'list', $delta = 0, $edit = array()) {
39	switch ($op) {
40	case 'list':
41	$blocks = array();
42	foreach(_advert_list_blocks() as $block_delta => $block_data) {
43	$blocks[$block_delta]['info'] = $block_data['title'];
44	}
45	return $blocks;
46
47	case 'configure':
48	$form = array();
49
50	// Provide form to enter ad details.
51	$form[ADVERT_BLOCK_BODY . $delta] = array(
52	'#type' => 'textarea',
53	'#title' => t('HTML and/or Javascript'),
54	'#description' => t('Enter HTML and/or Javascript to display in this block'),
55	'#default_value' => variable_get(ADVERT_BLOCK_BODY . $delta, ''),
56	);
57	return $form;
58
59	case 'save':
60	variable_set(ADVERT_BLOCK_BODY . $delta, $edit[ADVERT_BLOCK_BODY . $delta]);
61	return;
62
63	case 'view':
64	$block_data = _advert_get_block($delta);
65	$forum = $block_data['forum'];
66	if (advert_is_in_forum($forum)) {
67	$block['subject'] = $block_data['title'];
68	$block['content'] = variable_get(ADVERT_BLOCK_BODY . $delta, '');
69	return $block;
70	}
71	}
72	}
73
74	/**
75	* Are we in the appropriate forum to display that ad?
76	*/
77	function advert_is_in_forum($forum_id) {
78	return ((arg(0) == 'forum') && (arg(1) == $forum_id)) \|\|
79	((arg(0) == 'node') && is_numeric(arg(1)) && ($node = menu_get_object()) && (($node->type == 'forum') && ($node->tid == $forum_id)));
80	}