Rails simple_form association help with option tag

In my form I have:

<%= f.association :virksomhed, :collectio开发者_开发百科n => Virksomhed.all(:order => 'navn'), :prompt => "Vælg virksomhed" %> 

In view I have this:

I instead of the object I want to display the name (navn on danish) of the companyies.

I believe you're looking for the :label_method option:

<%= f.association :virksomhed, :collection => Virksomhed.all(:order => 'navn'), :prompt => "Vælg virksomhed", :label_method=>:navn %>