如何将嵌套的fields_for代码直接放在父_form中？

Question

如何重写 duels/_form 中的代码，以便我可以直接将 dueler_fields 中的代码放在那里？

duels/_form

<%= simple_form_for(@duel) do |f| %>
  <%= f.text_field :consequence %>
  <%= f.text_field :reward %>
  <%= f.fields_for :duelers do |dueler| %>
    <%= render 'dueler_fields', :f => dueler %>
  <% end %>
  <%= link_to_add_association f, :duelers do %>
    <span class="glyphicon glyphicon-plus"></span> Dueler
  <% end %>
<% end %>

_dueler_fields

# I want to place these two lines of code in the _form
<%= f.number_field :user_id, placeholder: "Enter User ID" %>
<%= f.number_field :challenge_id, placeholder: "Enter Challenge ID" %>

duels_controller

def new
  @duel = Duel.new
  respond_with(@duel)
end

duels has_many duelers。

Answer 1

将f更改为dueler，您应该好好去。或者：

<%= simple_form_for(@duel) do |f| %>
  <%= f.text_field :consequence %>
  <%= f.text_field :reward %>
  <%= f.fields_for :duelers do |dueler_form| %>
    <%= dueler_form.number_field :user_id, placeholder: "Enter User ID" %>
    <%= dueler_form.number_field :challenge_id, placeholder: "Enter Challenge ID" %>
  <% end %>
<% end %>