删除嵌套对象

curso

<% for curso in @profile.cursos %>
<li><%=h curso.nome %> - <%=h curso.universidade %><br>
Ingresso em: <%=h curso.ano_ingresso %> - Encerra em: <%=h curso.ano_termino %> 
<li>
<%= button_to \'Delete\', { :action => \"destroy\", :id => curso.id },:confirm => \"Are you sure?\", :method => :delete %>

button_to delete

resources :profiles do
    resources :courses
end

<%= link_to \"Delete\", profile_course_path(profile, course), :method => :delete %>

profile

course

before_filter :get_profile

def get_profile
    @profile = Profile.find(params[:profile_id]) if params[:profile_id]
end

def destroy
  @course = Corse.find(params[:id])
  @course.destroy
  redirect_to profile_courses_path(@profile)
end 

<%= link_to \"New Course\", new_profile_course_path(profile) %>