Rails - Mar 2012 - collection_select

_form.html.haml
  = f.label :Select_Brand,
"Select_Brand<em>*</em>".html_safe
  = collection_select(:brand_name, :brand_id, Brand.all, :id, :name,
:prompt => "Select a Brand" )


show.html.haml file
%table
  %tr
    %td
      Brand_Name :
    %td
      = @message.brand_id

After writing this code I am not able to see the brand name. Its not
giving any error but its giving blank field

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I don''t think there should be any issue with this syntax then also you 
can try this one
 f.collection_select(:brand_id, Brand.all, :id, :name,
:include_blank => "Select a Brand" )

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