ActiveAdmin display collection in Show method

Question

I have Packages, which have multiple Components (linked using a has_many through Bundles)

In ActiveAdmin, when I show a Package I want to be able to show all the Components linked to it

So I have a show method as follows:

show do
 attributes_table do
  row :description

  row 'Components' do |n|
     package.components.each do |component|
       #debugger
       component.name
     end
  end
 end
end

When I display the page, it shows the full version of each record, ie (one of which I show below, but there will be as many as there are Components):

[#<Component id: 2, component_token: "6e9be0b0-71c0-012f-d523-00254bca74c4", name: "Exercise Module", description: "This is the exercise module", created_at: "2012-04-26 11:25:20", updated_at: "2012-04-26 11:25:20">]

When I stop the debugger at the point I have commented it, the value for component.name is given as "Exercise Module", but that is not what is outputted to the show - in fact, ActiveAdmin seems to ignore everything in that |component| block.

How do I display the record attributes, and not the whole record itself?

Thanks

Answer 1

It's happening because the row shows the output of this line package.components.each {|component| ... } and that's the collection

Try this:

show do

 attributes_table do
  row :description

  row 'Components' do |n|
     package.components.map(&:name).join("<br />").html_safe
  end
 end

end

or any other join string you prefer :)