即使允许属性，Rails“未允许的参数”也会出错

Question

我使用Ruby On Rails 5并有2个表：

1）包含shelfmark，harddisk_id

列的表档案

2）具有列标签，容量

的表硬盘

我有一个看起来像这样的存档表单（app / views / archives / _form.html.erb）

<%= form_with(model: archive, local: true) do |form| %>

  <div class="field">
      <%= form.label :shelfmark %><br />
      <%= form.text_field :shelfmark %>
  </div>

  <%= form.fields_for :harddisk do |harddisk_fields| %>

    <div class="field">
      <%= harddisk_fields.label "Harddisk capacity" %><br />
      <%= harddisk_fields.text_field :capacity %><br />
    </div>

    <div class="field">
      <%= form.label "Harddisk Label" %><br />
      <%= form.select :harddisk_id, Harddisk.order(label: :asc).collect {|a| [ a.label, a.id ] } %>
    </div>
  <% end %>

  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>

在archives_controller.rb中，默认的CRUD方法包含以下代码段：

  def archive_params
    params.require(:archive)
          .permit(:id, :shelfmark, :harddisk_id, harddisk_attributes: [:id, :capacity, :label])
  end

当我从下拉列表中选择硬盘标签并单击“保存”时，我收到“成功”消息，但硬盘标签字段未更新。

在Rails服务器控制台上，我可以看到消息：

  

“未经许可的参数:: harddisk_attributes，：harddisk_id”

我确实已经在archives_controller中允许这些属性，或者我是否也必须在其他地方允许它？ 我错过了什么？

app / controllers / archives_controller.rb中的

：

def edit
end


  def update
    respond_to do |format|
      if @archive.update(archive_params)
        format.html { redirect_to @archive, notice: 'Archive entry was successfully updated.' }
        format.json { render :show, status: :ok, location: @archive }
      else
        format.html { render :edit }
        format.json { render json: @archive.errors, status: :unprocessable_entity }
      end
    end
  end

Rails服务器日志：

Started PATCH "/archives/1" for ::1 at 2018-02-08 15:44:09 +0100
Processing by ImagecapturingsController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"TfThFrCaA34qi3YliuGVliaaifCBk2KxRXlvA0UMEM2evFUe7M8ODwY5U/FEimNz+NXqdqr+HSKbU6sLRoSVBw==", "archive"=>{"shelfmark"=>"csg-0070 foo", "harddisk_attributes"=>{"capacity"=>"932", "id"=>"1"}, "harddisk_id"=>"135"}, "commit"=>"Update Archive", "id"=>"1"}
  Archive Load (31.4ms)  SELECT  `archive`.* FROM `archive` WHERE `archive`.`id` = 1 LIMIT 1
Unpermitted parameters: :harddisk_attributes, :harddisk_id
   (0.5ms)  BEGIN
  Harddisk Load (0.5ms)  SELECT  `harddisks`.* FROM `harddisks` WHERE `harddisks`.`id` = 1 LIMIT 1
   (0.6ms)  COMMIT
Redirected to http://localhost:3001/archives/1
Completed 302 Found in 86ms (ActiveRecord: 33.0ms)

和我的模特：

class Archive < ApplicationRecord
  belongs_to :harddisk
  accepts_nested_attributes_for :harddisk
end

class Harddisk < ApplicationRecord
  has_many :manuscripts, through: :manuscripts_harddisks
end

从服务器日志中执行此代码段：

"archive"=>{
"shelfmark"=>"csg-0070 foo", "harddisk_attributes"=>{"capacity"=>"932", "id"=>"1"}, "harddisk_id"=>"135"}, "commit"=>"Update Archive", "id"=>"1"}

表示从harddisk_id：135和id：1的转换出错？