Simple form not sending parameter

Question

This is my form

    <%= simple_form_for '', url: temperature2_path, :method => :get do |f| %>
        <%= f.input :search, collection: @vehicles, :label_method => :objectno, :label => 'Vehiculo',  :selected => params[:search] %>
        <%= f.button :submit, value: "Buscar",:name => nil%>
    <% end %>

If I print the on the console p @vehicles, you can see that there are values

#<ActiveRecord::Relation [#<Message id: nil, objectno: "Carlos">, #<Message id: nil, objectno: "HLPN">, #<Message id: nil, objectno: "024">, #<Message id: nil, objectno: "HLMAW">]>

However, when I select record from the collection @vehicles the URL does not contain a vehicle:

http://0.0.0.0:3000/temperature2?search=

I was expecting

http://0.0.0.0:3000/temperature2?search=Carlos

What I am missing?

Answer 1

Seems like you are missing value properties in your generated HTML form. I guess you need to change the label_method to value_method in your form.

<%= f.input :search, collection: @vehicles, :value_method => :objectno, :label => 'Vehiculo',  :selected => params[:search] %>