Block Theme

BlockTheme allows an admin to define tpl files for standard block templates and provides a select box on the block configure form so the user can select a tpl file to use as opposed to having to override the templates by block ID.

See an excellent video by Bob @ mustardseed on how to use this module (6.x version)

Installation

1. Enable the module

2. Drupal 8.x: go to admin/structure/block/blocktheme

   Drupal 7.x: go to admin/config/user-interface/blocktheme

   and add entries like:

   customblocktemplate|My Custom Template
   superblock|My SuperTemplate
   

3. Create twig/tpl files in your theme directory like:

   Drupal 8.x: block--blocktheme--customblocktemplate.html.twig; block--blocktheme--superblock.html.twig

   Drupal 7.x: block--blocktheme--customblocktemplate.tpl.php; block--blocktheme--superblock.tpl.php

4. Optionally, use the new $blocktheme variable in your block.tpl.php or block-*.tpl.php files to change template behaviour depending on the chosen blocktheme value

Usage

Go to the configure screen for any block and select the appropriate template.