使用单个表单提交到两个表中

Question

有什么方法可以提交到单个rails form_for/simple_form_for 中的两个表中，这两个表相互关联？

例子：-

<%= form_for @ob do |f| %>
<%= f.text_field :name %>
<%= f.text_field :another_col --> this is another table column(having association)

<%f.button :submit %>
<%end%>

Answer 1

诀窍是将accepts_nested_attributes_for 添加到您的父模型中，并按照以下方式进行操作

型号

class Ob < ActiveRecord::Base
  has_many :foo
  accepts_nested_attributes_for :foo, allow_destroy: true
end

ERB

<%= form_for @ob do |f| %>
  <%= f.text_field :name %>
  <% f.foo do |fo| %>
     <%= fo.text_field :another_col %> <%=# this is another table column(having association)%>
  <% end %>

  <%f.button :submit %>
<%end%>

控制器

#your params would look like below
params = { ob: {
  name: 'joe', foos_attributes: [
    { another_col: 'Bar' }
  ]
}}
Ob.create(params[:ob])