Rails 5.1：嵌套表单验证

问题描述

我有一个名为USER的父模型和两个称为奖励和认证的嵌套模型。当我保存认证时，奖励的模型验证告诉我奖励是空的，而当我保存奖励时，我收到一个错误，说认证的验证是空的。不确定发生了什么。

这里是我的用户模型

  has_many :certifications, dependent: :destroy
  has_many :awards, dependent: :destroy


  # allows for nested attributes in the user views.
  accepts_nested_attributes_for :work_histories, :qualifications, :certifications, :courses, :awards,
  :languages, :patents, :publications, allow_destroy: true

这里是我的奖励模型

    class Award < ApplicationRecord
  belongs_to :user

  validates :award_name, :award_granted_by, :award_date, :award_description, presence: true

end

和我的认证模型

class Certification < ApplicationRecord
  belongs_to :user

  validates :certification_name, :certification_authority, :certification_number, :certification_from,
            :certification_to, presence: true

end

USERS_CONTROLLER中的强参数

 def user_params
   params.require(:user).permit( :first_name, :last_name, :email, :phone, :current_job_title, :password, :password_confirmation,
   work_histories_attributes: [:user_id, :id, :_destroy, :job_title, :company, :description, :city, :state,:start_date, :end_date],
   qualifications_attributes: [:user_id, :id, :_destroy, :education, :university, :university_major, :graduation_year, :currently_enrolled, :location],
   awards_attributes: [:user_id, :id, :_destroy, :award_name, :award_granted_by, :award_date, :award_description],
   certifications_attributes: [:user_id, :id, :_destroy, :certification_name, :certification_authority, :certification_number, :certification_from, :certification_to, :cert_never_expires],
   courses_attributes: [:user_id, :id, :_destroy, :course_name, :course_number, :course_description],
   languages_attributes: [:user_id, :id, :_destroy, :language, :language_proficiency],
   patents_attributes: [:user_id, :id, :_destroy, :patent_title, :patent_office, :patent_number, :patent_status, :patent_date, :patent_description],
   publications_attributes: [:user_id, :id, :_destroy, :publication_title, :publication_source, :publication_date, :publication_description] )
 end

这是用户表单的一部分。我有一个按钮下拉菜单，它有几个选项，当用户选择一个选项时，特定的div将与模式窗口一起显示。

  <!-- one-to-many nested attributes -->
  <%= form_for(@user) do |form| %>

      <!-- a partial is rendered based on the user dropdown selection -->
      <div id="award">
        <%= render partial: "awards/new_award_modal", locals: { form: form } %>
      </div>
      <div id="cert">
        <%= render partial: "certifications/new_certification_modal", locals: { form: form } %>
      </div>

    <%= form.submit 'Save', id: "submit-achievement", class: 'btn btn-primary form-control' %>

  </div><!-- modal body -->

    <div class="modal-footer">
      <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
    </div>

  <% end %><!-- form_for -->

这里是认证部分

<div class="new_cert">

<%= form.fields_for :certifications, Certification.new do |cert_field| %>

  <div class="field">
    <%= cert_field.label :certification_name, 'Certification Title' %>
    <%= cert_field.text_field :certification_name, class: "form-control" %>
  </div>
  <div class="field">
    <%= cert_field.label :certification_authority %>
    <%= cert_field.text_field :certification_authority, class: "form-control" %>
  </div>
  <div class="field">
    <%= cert_field.label :certification_number %>
    <%= cert_field.text_field :certification_number, class: "form-control" %>
  </div>

  <table>
    <tr>
      <td>
      <div class="field">
        <%= cert_field.label :certification_from, "From" %><br />
        <%= cert_field.date_select :certification_from,{ :order => [:day, :month, :year],
            :start_year => Date.current.year, :end_year => 1960,
            :prompt => {day: 'Day', month: 'Month', year: 'Year'}, :discard_day => true }, class: 'form-control' %>
      </div>
      </td>
      <td>&nbsp;&nbsp;&nbsp;&nbsp;</td>
      <td>
      <div class="field">
        <%= cert_field.label :certification_to, "To" %><br />
        <%= cert_field.date_select :certification_to, { :order => [:day, :month, :year],
            :start_year => Date.current.year + (10), :end_year => 1960,
            :prompt => {day: 'Day', month: 'Month', year: 'Year'}, :discard_day => true }, class: 'form-control'  %>
      </div>
      </td>
    </tr>
  </table>

  <div>
    <%= cert_field.label :cert_never_expires, "This certification does not expire", class: "l" %>
    <%= cert_field.check_box :cert_never_expires, class: 'cb' %>
  </div>
  <br />

<% end %>

</div><!-- ./new_cert -->

这是获奖部分

<div class="new_award">

  <!-- nested attributes for award modal -->
  <%= form.fields_for :awards, Award.new do |award_field| %>

      <div class="field">
        <%= award_field.label :award_name, 'Award or Honor Name' %>
        <%= award_field.text_field :award_name, class: "form-control" %>
      </div>

      <div class="field">
        <%= award_field.label :award_granted_by, "Granted by" %>
        <%= award_field.text_field :award_granted_by, class: "form-control" %>
      </div>

      <div class="field form-inline">
        <%= award_field.label :award_date, 'Date' %><br />
        <%= award_field.date_select :award_date, { :order => [:day, :month, :year],
            :start_year => Date.current.year, :end_year => 1960,
            :prompt => {day: 'Day', month: 'Month', year: 'Year'},
            :discard_day => true }, class: 'form-control ds' %>
      </div>

      <div class="field">
        <%= award_field.label :award_description, 'Description' %>
        <%= award_field.text_area :award_description, class: "form-control" %>
      </div>

  <% end %><!-- ./fields_for -->

</div>

因此，当没有验证时，可以将奖励和证书保存到数据库中，而不会出现任何问题。但是，当我只对表单中是否存在属性进行简单的验证检查时，事情就会变得很奇怪。奖励模式是说认证表格是空的，这应该是因为我正在提交奖励表格。相反的情况也是如此，当我去提交认证时，奖励验证被触发，说奖励表格是空白的。

推荐答案

最好是查看您收到的具体错误，但我要确保您的窗体正确设置了嵌套属性，并且您的user控制器在强参数中设置了嵌套属性。

Rails指南中有文档：http://api.rubyonrails.org/classes/ActionController/StrongParameters.html

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