How to create a new associated template in Rails

Question

Assuming I own the user Admin, the Admin has a login_user, as system_user, and this relationship is polymorphic, because other types of users also have login_user.

When creating the Admin, I must add the fields of login_user.

<%= form_for(@admin) do |f| %>
<%= f.fields_for :login_user do |login_user_fields|%>
<%= render partial: 'login_users/fields', locals:{f: login_user_fields, login_user: @admin.login_user, }%>
<% end %>
<div class="actions">
<%= f.submit %>
</div>
<% end %>

The idea is that when created a new admin, also be created a login_user to the same, some idea of how to do it?

Answer 1

From what I saw I guess you didn’t instate the object in fields_for.

I suggest you read the method documentation: http://apidock.com/rails/ActionView/Helpers/FormHelper/fields_for

It explains what should be done in the template to accept attributes from another template and save (accepts_nested_attributes_for).