Question

我在Rails中使用Simple Form创建了一个表单来创建新的测试。我的Test模型与has_and_belongs_to_many模型有Tool关联。

我的代码获取所有工具并将它们分组到类别中（category是工具的属性）。然后，它为每个类别创建一个选择框（如图所示）。

- all_tools = Tool.all.group_by(&:category)
  - all_tools.each do |category|
    = f.association :tools,
      collection: category.last,
      label: category.first,
      label_method: lambda { |tool| "#{tool.name} (#{tool.description})"},
      input_html: { multiple: false }

Many select boxes

从每个选择框中选择工具并提交表单时，我收到以下错误：

found unpermitted parameter: tool_ids

并且目前只为tool_ids提交了一个ID，而不是我需要的一系列ID。

我知道当multiple选择框时，这是有效的，但我只希望用户能够从每个类别中选择一个工具，并让它在数组中提交所有tool_ids，类似于用户从multiple选择框中选择它们。

所以我的问题是，如何使用多个单一选择框以简单形式提交tool_ids数组？

编辑：根据要求，我已添加相关代码：

tests_controller ：

def create
  @test = Test.new(test_params)
  @tools = Tool.all.select(:name).distinct
  if @test.save

    Activity.log(current_user, "Created test #{@test.id}")

    redirect_to @test, notice: 'Test was successfully created.'
  else
    render :new, notice: 'Unable to save Test Details.'
  end
end

private

# Only allow a trusted parameter "white list" through.
def test_params
  params.require(:test).permit(
    :date,
    :start_time,
    :description,
    :machine,
    :location,
    :feeder_screw_diameter,
    :notes,
    :user_id,
    :tool_ids => [],
    :powder_ids => []
  )
end

提交时记录输出：

Started POST "/tests" for 127.0.0.1 at 2016-05-08 13:24:52 +0100
Processing by TestsController#create as HTML
  Parameters:       {"utf8"=>"✓","authenticity_token"=>"WKw+tQ1WKyxW7XZWCDvbvShCKnZ7iMY597P8eDGIvZEyis4ks7Mf4Lcu4vCf7q+fwtsReocmAlMGUrrhI4SgdQ==",
  "test"=>{"start_time(1i)"=>"2016",
  "start_time(2i)"=>"5",
  "start_time(3i)"=>"8",
  "start_time(4i)"=>"13",
  "start_time(5i)"=>"23",
  "description"=>"Test",
  "machine"=>"Some machine",
  "location"=>"Some Place",
  "feeder_screw_diameter"=>"15",
  "tool_ids"=>"21",
  "powder_ids"=>["", "3"],
  "user_id"=>"1",
  "date"=>"11-05-2016",
  "notes"=>"Some Notes"},
  "button"=>""}
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
Completed 500 Internal Server Error in 14ms (ActiveRecord: 0.4ms)
** [Airbrake] Notice was not sent due to configuration:         
  Environment Monitored? false         
  API key set? true

ActionController::UnpermittedParameters (found unpermitted parameter: tool_ids):
  app/controllers/tests_controller.rb:201:in `test_params'
  app/controllers/tests_controller.rb:70:in `create'


  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/actionpack-4.2.5.1/lib/action_dispatch/middleware/templates/rescues/_source.erb (4.0ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/actionpack-4.2.5.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.7ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/actionpack-4.2.5.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (0.7ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/actionpack-4.2.5.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (12.9ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/_markup.html.erb (0.2ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.2ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.2ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.2ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/console.js.erb within layouts/javascript (7.9ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/main.js.erb within layouts/javascript (0.2ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.2ms)
  Rendered /home/me/.rvm/gems/ruby-2.1.7/gems/web-console-2.2.1/lib/web_console/templates/index.html.erb (16.1ms)

非常感谢您的帮助！

如何在简单表单上为has_many关联创建许多单选输入？

0 个答案: