Entity Scaffolder is a drush plugin.

It reads the configuration from yaml files and creates appropriate feature files and preprocess functions.

A detailed documentation is hosted here https://factorial-io.github.io/entity_scaffolder/. A video introduction can be found here https://vimeo.com/260325910

• Checkout the code in ~/.drush/ so that it is recognized as plugin.
• run composer install

1. Create gallery.yaml under %drupal_root%/.tools/es/fpp/ so the structure looks like the following.

       .tools
        |__es
           |__fpp
              |__gallery.yaml
   

2. Populate gallery.yaml with following content

   name: "Awesome Gallery"
   machine_name: "gallery"
   fields:
     slideshow_images:
       map: patternImages
       type: image
       cardinality: -1
       label: Some Images
       image_style: thumbnail
     headline:
       map: description
       type: text_long
       text_format_filtered_html: full_html
       label: Headline
     caption:
       map: title
       type: text
       text_format_filtered_html: full_html
       label: Caption
   
   

3. Run drush es in %drupal_root%

4. A feature called fe_es and a module called es_helper should be created automatically with required files.

5. Verify that the FPP called "Awesome Gallery" with "Some Images" field is created.

6. Verify that preprocess function works as expected by creating a template called fieldable-panels-pane--gallery.tpl.twig and inspecting variable patternImages