Ruby on Rails

Hello ! 

I try to bind two pages together, a page which serves to make a research and a page which posts the result of the research.

Here are two pages that I want to bind together :

http://zupimages.net/up/14/05/0efm.png (Index) 
http://zupimages.net/up/14/05/901g.png (Show) 

And here is what it currently gives me when I press the Search button :

http://zupimages.net/up/14/05/cr2r.png (Index) 
http://zupimages.net/up/14/05/f2mn.png (Show) 

Here is the code of the two pages:

Index.html.erb :

<h1>Search counter</h1>  <%= form_tag '/counters/id', method: :get %>  <table>      <tr>        <th>Identifiant</th>        <th><%= search_field_tag "counters" %></th>        <th><%= submit_tag 'Search' %></th>        <th></th>      </tr>  </table>

Show.html.erb :

<p id="notice"><%= notice %></p>    <p>    <strong>Nombre de message :</strong>    <%= @counter_msg %> </br>      <strong>Maximum de message pouvant être envoyé :</strong>    <%= @counter_max %> </br>      <strong>Reset automatique :</strong>    <%= @counter_reset %> </br>      <strong>Date du dernier reset :</strong>    <%= @counter_reset_date %> </br>  </p>      <%= link_to 'Edit', edit_counter_path(@counter) %> |  <%= link_to 'Back', counters_path %>

I would like to have your help to know where the problem comes from and how I could fix it. (I think this is a story of road, but being a beginner I do not know)

Thank you in advance for your help