ruby on rails - ActiveRecord::RecordNotFound --- Couldn't find User without an ID -

i trying make simple button redirect user own user page.

here button on application.html

<li><%= link_to "my profile", {:controller => "users", :action => "show", :id => session[:user_id] }, :method => "get" %></li> 

controller show method left blank

def show end  private # use callbacks share common setup or constraints between actions. def set_user   @user = user.find(params[:id]) end 

here route

match '/myprofile', to: 'users#show', via: 'get' 

i feel missing simple, regardless, appreciated. thanks

when click profile button, @user = user.find(params[:id]) highlighted.

what log say? show (a) action getting called , (b) parameters being sent in.

could simple params[:id] being either wrong id, ornil reason.