How can I get the $delta of block created using UI?

Question

I have a created a block using UI .I want to change the content of the block programmatically. For this I am using hook_block_view_alter(&$data, $block) for it as follows: I have just created a block using UI and I am going to assign certain pages which will be able to see that view..

function hook_block_view_alter(&$data, $block) {
if ($block->delta == 'HOW CAN I GET THE $DELTA here') {
$data['#markup'] = '<a href="www.google.com">Google</a>';

} 

}

Answer 1

If you go to admin/structure/block and mouseover the "configure" link you'll see something like this for blocks added through UI:

/admin/structure/block/manage/block/1/configure

something like this for blocks created with views:

/admin/structure/block/manage/views/81e6b321879efa58ba9e546521c14467/configure

something like this for blocks created with webform:

/admin/structure/block/manage/webform/client-block-50/configure

something like this for blocks created by the system (core):

/admin/structure/block/manage/system/main/configure

I've bolded the deltas and italicized the modules in each example.

Answer 2

Find the block on the Blocks configuration page, and click the "configure" link.

Look at the URL. The URL path tells you both the module that is responsible for the block, and the delta assigned to it. Here's the URL pattern:

/admin/structure/block/manage/ MODULENAME / DELTA /configure

So if your URL path is "/admin/structure/block/manage/block/5/configure", then that particular block is maintained by the "block" module, and the delta for the block is "5".

Answer 3

You can always get the delta by quering your DB (handy in cases where custom blocks are generated automatically and the delta is dynamic)

  $result = db_select('block_custom', 'b')
     ->fields('b', array('bid'))
     ->condition('info', '<ADMIN TITLE OF THE BLOCK>')
     ->execute()
     ->fetchAssoc();

  // if $result['bid'] exists..

  $delta = db_select('block', 'b')
     ->fields('b', array('delta'))
     ->condition('bid', $result['bid'])
     ->execute()
     ->fetchAssoc();

  $delta = $delta['delta'];