Rails AJAX - getting a dropdown selection to populate a table

Question

I\'m trying to get a selection from a dropdown to populate a table in the same page, using AJAX so that changes appear without a page refresh. I\'ve got as far as working ou

Answer 1

Assume you're using jquery

<%= collection_select :project, :id, Project.all, :id, :name, {}, {:onchange => '$.get("/populate_projects")'} %>

then in your controller

def populate_projects
  @project = Project.find(params[:id])
  respond_to do |format|
    ...
    format.js { render 'populate_projects', :formats => [:js] }
    ...
  end
end

finally, create populate_projects.js.erb and write any change table content script. @project is available in that script.