Question

I have a simple form that allows you to select users and select a hospital. The form successfully submits. However when I view the index.html.erb, it looks like the following: [imgur][1]. Any idea why the “Full name” and “Hospital” is not appearing?

    <div class="field">
      <%= f.label :booking_reference %>
      <br/>
      <%= f.text_field :booking_reference %>
    </div>

    <div class="field">
      <%= fields_for :User do |user| %>
          <%= user.collection_select :user_id, User.all, :id, :full_name %>

      <% end %>
    </div>

    <div class="field">
      <%= fields_for :hospital do |hosp| %>
          <%= hosp.collection_select :hospital_id, Hospital.all, :id, :name %>
      <% end %>
    </div>

    <div class="actions">
      <%= f.submit %>
    </div>
<% end %>

Answer 1

Wouldn’t that be like

<div class="field">
      <%=  f.collection_select :hospital_id, Hospital.all, :id, :name %>
</div>

and

<div class="field">
      <%= f.collection_select :user_id, User.all, :id, :full_name %>
</div>

?

Otherwise you break the form helper.

In doubt, check the api here: collection_select