function _block_custom_block_name_exists

Render API callback: Checks if a custom block machine name is taken.

@since 1.32.1 Function added.

Parameters

string $value: The machine name.

Return value

bool|null: Whether or not the custom block machine name is taken, or null if $value is empty.

File

core/modules/block/block.module, line 364

Provides the ability to create reusable custom blocks.

Code

function _block_custom_block_name_exists($value) {
  if (!empty($value)) {
    return (bool) block_custom_block_load($value);
  }
}