Duplicate

[anitagraham]

This is a very short PR.

It puts in place the basic features needed to implement a duplicate action.

The default duplicate action is very naive - it copies the item and opens the copy to be edited.
There is no attempt to copy any associations apart from :belongs_to, which is held on the model.

_A full implementation of a duplicate action will need a more sophisticated duplicate method - it will depend on the model and the implementor. Although the example below, using refinerycms-pages, adds some more steps, a true duplicator for refinerycms-pages needs attention paid to translations and other associations added by refinery extensions. I don't think it is ready to be submitted as a PR yet.

Each model will have different considerations - starting with whether it is appropriate to duplicate at all.
_

For an extension to implement the duplicate action it will need to

• add a route to the action
• change index/model view to add a link for the action
• perhaps override the default duplicate method to extend the duplication to copy associations.

To implement 'duplicate' in an extension

This is still a simple duplication.

Adding a route

# refinerycms/pages/config/routes/rb
...
namespace :admin, path: Refinery::Core.backend_route do
  get 'pages/*path/edit', to: 'pages#edit', as: 'edit_page'
  get 'pages/*path/duplicate', to: 'pages#duplicate', as: 'duplicate_page'
...

Override the default duplicate action so page-parts are duplicated

# refinerycms/pages/app/controllers/refinery/admin/pages_controller.rb
module Refinery
  module Admin
    class PagesController < Refinery::AdminController
...
def duplicate
  original_page = @page
  @page = original_page.dup
  @page.title += ' copy'
  original_page.parts.each |page_part| do
      @page.parts << page_part.dup
   end
   @page.save
  render :edit
end

add a link to the duplicate action in the admin/index

# refinerycms/pages/app/views/refinery/admin/pages/_page.html.erb
...
<%= action_icon(:duplicate, refinery.admin_duplicate_page_path(page.nested_url),  t('duplicate',   scope: 'refinery.admin.pages' ) ) %>

Note

The example duplicate action saves the page before sending it to be edited. Seems to work.

Finally, I tried to write a routing test but didn't manage to get it working. Help appreciated.

[anitagraham]

Well, I think I've made that change. I even tried to squash my commits, but I fear they are as tangled as ever.

[anitagraham]

Not sure these failures are related to the this PR.

[parndt]

Yeah, the tests failures seem to be happening in every PR.. it's very strange. I think we'll need to fix it before we can merge anything though 😦

[parndt]

Tests started failing between Rails v5.2.2.1 (passing) and v5.2.3.rc1 (failing)

[parndt]

Tests fail from this change: rails/rails#35162