drupal 7 custom block changed? - php

Question

Is the hook_block has been changed? the following is drupal 6 example i have found on internet(http://eureka.ykyuen.info/2010/11/10/drupal-create-a-block/), there is no block shown in admin/structure/block,
* Implementation of hook_block().
*/
function custom_block($op = 'list', $delta = 0, $edit = array()) {
switch ($op) {
//Define the block
case 'list':
$blocks[0]['info'] = t('Block Info');
$blocks[0]['cache'] = BLOCK_NO_CACHE;
return $blocks;
case 'configure':
//TODO: block configurable parameters
$form = array();
return $form;
case 'save':
//TODO: save new configuration
return;
//Display the block
case 'view':
$block['subject'] = t('Block Subject');
$block['content'] = 'Block Content';
return $block;
}
}
it seems that, hook_block in drupal 7 has been changed, how to rewrite about code? anyone can provide hints/direction to me? thank you very much.

Answer 1

In Drupal 7, your implementation of hook_block() would be changed to:
/**
* Implements hook_block_info().
*/
function custom_block_info() {
$blocks = array();
$blocks['list'] = array(
'info' => t('Block Info'),
'cache' => DRUPAL_NO_CACHE,
);
return $blocks;
}
/**
* Implements hook_block_view().
*/
function custom_block_view($delta = '') {
$block = array();
switch ($delta) {
case 'list':
if (user_access('access content')) {
$block['subject'] = t('Block Subject');
$block['content'] = 'Block Content';
}
break;
}
return $block;
}

Answer 2

Your code works for Drupal 6.The implementation of hook_block is changed in Drupal 7.
In Drupal 7 there are different hooks that should be used to serve your purpose.
hook_block_configure
hook_block_info
hook_block_save
hook_block_view
Check more about hook_block here