The focus of v1.7 has been to:

• use Rails layouts, views and partials,
• to deprecate controller meta-programming
• to make resource and page DSL optional.

In detail:

• Uses a faster and more memory efficient fork of Arbre called Arbo. Elements are rendered using render_in instead of to_s . render_in may be used with either an Arbo::Context or an ActionView::Context .
• Uses Rails layout views/layouts/active_admin.html.erb and views/active_admin/_head.html.erb . Views::Pages::Base and Views::Pages::Layout have been removed and are no longer available for subclassing or customization.
• Uses the following Rails partials instead of Arbre view components. The replaced view components have been removed and are no longer available for subclassing or customization:
  • views/active_admin/base/_header.html.arb replaces Views::Header
  • views/active_admin/base/_title_bar.html.arb replaces Views::TitleBar
  • views/active_admin/base/_action_items.html.arb replaces Views::ActionItems
  • views/active_admin/base/_sidebar.html.arb replaces Views::Sidebar
  • views/active_admin/base/_footer.html.arb replaces Views::Footer
• Reduced configuration DSL and controller meta-programming:
  • Using controller do ... end is deprecated in favor of defining and adding to a subclass of PageController or ResourceController.
  • actions and before_|after_ callbacks should be defined directly in the controller.
  • Passing blocks to member_action , collection_action or page_action is deprecated in favor of adding methods to the controller.
  • Passing blocks to batch_action is deprecated in favor of adding protected methods to the controller.
  • permit_params is deprecated in favor of adding permitted_attr_namesto the controller.
  • Passing a block to the show page presenter is deprecated in favor of defining a partial, _show.html.arb. Views::Pages::Show has been removed and is no longer available for subclassing.
  • Passing a block to the form page presenter is deprecated in favor of defining a partial, _form.html.arb. Views::Pages::Form has been removed and is no longer available for subclassing.
  • Passing a block to the index page presenter for :table is deprecated in favor of defining a partial _index_as_table.html.arb . Views::Pages::Index has been removed and is no longer available for subclassing.
  • content do ... end is deprecated in favor of defining a partial, _content.html.arb .
  • Setting page presenter :title is deprecated in favor of setting content_for(:page_title) in a partial instead.
  • Using action_item is deprecated in favor of defining a partial, _action_items.html.arb and populating with links.
  • Using filter is deprecated in favor of defining a partial, _filters_form.html.erb and passing filter settings into active_admin_filters_form_for