app/views/creates/_form.html.erb
<%= form_for(@create) do |f| -%>
<%= f.error_messages -%>
<div class="field">
<%= f.label t('activerecord.models.agent') -%><br />
<%- if @create.agent -%>
<%= link_to @create.agent.full_name, @create.agent -%>
<%= f.hidden_field :agent_id -%>
<%- else -%>
<%= f.text_field :agent_id -%>
<%- end -%>
</div>
<div class="field">
<%= f.label t('activerecord.models.work') -%><br />
<%- if @create.work -%>
<%= link_to @create.work.original_title, @create.work -%>
<%= f.hidden_field :work_id -%>
<%- else -%>
<%= f.text_field :work_id -%>
<%- end -%>
</div>
<div class="actions">
<%= f.submit %>
</div>
<%- end -%>