Piers C questions

Piers C answers

• How to include a mixin/module in ALL ActiveAdmin controllers?
• Rails 4 ActiveAdmin CSV export yields "You are not authorized to perform this action." in browser
• How do you display Ruby ActiveAdmin attributes_table rows in 2 or more columns?
• Render a Custom form with form action within index of an active admin resource
• Activeadmin - user option for hide and unhide column
• rails activeadmin how to use action_item?
• How to ignore a folder in Zeitwerk for Rails 6?
• How can I have a div with multiple children in ActiveAdmin/Arbre
• ActiveRecord + ActiveAdmin, save a empty string instead of null
• ActiveAdmin filter boolean as single checkbox