im working on the code in this link... PullMonkey Blog » Blog Archive » Dynamic Select Boxes – Ruby on Rails…
i cant able to dynamically select values in second and third dropdown using onchange event .. any suggestions pls...
index.rhtml is...
<%= javascript_include_tag :defaults %>
<%= collection_select(nil, :genre_id, @genres, :id, :name, {:prompt => "Select a Genre"}, {:onchange =>" alert('sd');"}) %>
<br/> <div id="artists"><%= render :partial => 'artists', :object => @artists %></div> <div id="songs"><%= render :partial => 'songs', :object => @songs %></div>
controller is...
def update_artists # updates artists and songs based on genre selected @genre = Genre.find(params[:genre_id]) @artists = @genre.artists @songs = @genre.songs
render :update do |page| page.replace_html'artists', :partial => 'artists' page.replace_html 'songs', :partial => 'songs', :object => songs end end
if i select values in first drop down i cant get corresponding values for second as well as for third.. pls help