ruby on rails - Add id to url wont work -

i have 2 model less views.

an index view:

<% @icd1.each |f| %>  <%= link_to "#{f.von}  #{f.bis} #{f.bezeichnung}", icd_show_path(f) %>  </p> <% end %> 

and show view:

<% @icd1.each |f| %>   <%= link_to "#{f.von}  #{f.bis} #{f.bezeichnung}", icd_show_path(f) %>   </p>   <% f.icd2.each |s| %>     <%= s.von %><%= s.bis %><%= s.bezeichnung %>     </p>   <% end %> <% end %> 

my controller:

class icdcontroller < applicationcontroller   def index @icd1 = icd1.all   end   def show @icd1 = icd1.find(params[:id])   end end 

but somehow link in index view, wont work:

<%= link_to "#{f.von}  #{f.bis} #{f.bezeichnung}", icd_show_path(f) %> 

when try access show page error:

couldn't find icd1 without id 

and url shows

http://localhost:3000/icd/show 

without id!

my routes:

get "icd/index" "icd/show" 

1st: confusing naming: controller icd, model icd1..

---

2nd:

get "icd/show/:id", to: "icd#show", as: "icd_show" 

or

get "icd/:id/show", to: "icd#show", as: "icd_show" 

depends url want get. confusing.

but think need in url;

<%= link_to "#{f.von}  #{f.bis} #{f.bezeichnung}", icd_show_path(f) %> 

and routes:

get "icd/:id", to: "icd#show", as: "icd_show" 

after next url available:

../icd/1 call action show icd controller