Question

I have a simple select form. When a year is selected from the form I would like the results to be returned to the same page but below the form. Can someone explain how to do this? Here is the form page (index.html.erb)

<%= form_tag("lookup/show", :method => "get") do %>
    <%= label_tag(:q, "Pub Year :") %>
    <%= collection_select(:lookup, :pubyear, @pubyears, :pubyear, :pubyear) %>
    <%= submit_tag("Find") %>
<% end %>

Here is the show method from the Lookup controller

def show
    @lookuprows = Lookup.return_lookup_row(params[:lookup][pubyear])

    respond_to do |format|
       format.html
    end
end

Here is the show.html.erb page that the results currently go to

<tbody class="lkuptbody">
    <% @lookuprows.each do |lkup| %>
       <tr class="lkuprow">
         <td><input type="text" class="lkupcode" value=<%= lkup.codetype %> /></td>
         <td><input type="text" class="lkupdesc" value=<%= lkup.codedesc %> /></td>
         <td><input type="text" class="lkuprmks" value=<%= lkup.rermark %> /></td>
       </tr>
</tbody>

I understand that I will have to make a partial _show.html.erb, but how do I reference that from the form page (index.html.erb)?

Thanks

Answer 1

If you want the results to appear on the same page but below the form, then the form should send the results to the index action, not to the show action:

<%= form_tag("lookup", :method => "get") do %>
  <%= label_tag(:q, "Pub Year :") %>
  <%= collection_select(:lookup, :pubyear, @pubyears, :pubyear, :pubyear) %>
  <%= submit_tag("Find") %>
<% end %>

and in your LookupController:

def index
  @lookuprows = Lookup.return_lookup_row(params[:lookup][pubyear]) unless params[:lookup].nil?
  ...
end

Then just append the table HTML in your show page below the form (in index.html.erb) wrapped in an if block to filter out the case where @lookuprows is nil:

<% if @lookuprows %>
  <tbody class="lkuptbody">
    <% @lookuprows.each do |lkup| %>
      <tr class="lkuprow">
        <td><input type="text" class="lkupcode" value=<%= lkup.codetype %> /></td>
        <td><input type="text" class="lkupdesc" value=<%= lkup.codedesc %> /></td>
        <td><input type="text" class="lkuprmks" value=<%= lkup.rermark %> /></td>
      </tr>
    <% end %>
  </tbody>
<% end %>

This will show the results in @lookuprows as a table if there are any, if not it will not show the table.

You may want to put that table HTML in a separate partial to clean up the view, but that is not essential to the problem you asked.

Hope that helps.