Route helpers for non Trestle routes in views?

[pelted]

I've got to be missing something basic here as I have not used Trestle in a while, but I have a couple of routes that trigger downloads. These are on a bare basic "Dashboard" view.

Rails.application.routes.draw do
  ...
  namespace :export do
    get 'listing',  action: :listing
  end
end

Super basic, shows up in routes, works for the address bar. But in a view a simple:

<%= link_to "Export Listing", export_listing_path %>

Returns undefined local variable or method export_listing_path

Are the standard Rails route helpers not available in a view?

[spohlenz]

The Trestle engine uses an isolated namespace for its routes. This means that calls to your main application's routes must be prefixed with main_app.. e.g.

<%= link_to "Export Listing", main_app.export_listing_path %>

Alternatively you can append your routes directly within the Trestle engine:

Trestle::Engine.routes.draw do
  # Your routes here
end

With this approach, you can call the routes directly from within the admin. The /admin path will also be automatically prefixed to route paths.

If it makes sense in your situation, I'd recommend defining your routes and actions directly within an admin resource:

Trestle.resource(:listings) do
  controller do
    def export
    end
  end

  routes do
    get :export, on: :collection
  end
end

<%= admin_link_to "Export Listing", admin: :listings, action: :export %>