asset関数の第2引数に使えるのは何かを調べたのでメモ。
app/config/eccube/packages/framework.yaml
assets:
base_path: '/html/template/%eccube.theme%'
packages:
admin:
base_path: '/html/template/admin'
save_image:
base_path: '/html/upload/save_image'
plugin:
base_path: '/html/plugin'
install:
base_path: '/html/template/install'
temp_image:
base_path: '/html/upload/temp_image'
user_data:
base_path: '/html/user_data'