Question

过去两天一直在这，并无法弄清楚我做错了什么。我正在尝试使用form_tag同时更新屏幕上的多个match_pick对象。用户注册后立即创建裸match_pick条记录。然后我希望用户能够更新这些记录的相关信息并按下提交按钮。这是我到目前为止所做的：

的routes.rb

post "match_picks/adjust_match_picks" => "match_picks#adjust_match_picks", :as => :adjust_match_picks

match_picks_controller.rb

def adjust_match_picks
  puts "The update_match_picks method has been called"
  @match_picks_recd = params[:match_picks]
  puts @match_picks_recd.inspect    
  puts "The parameters are:"
  puts params.inspect
  puts "The object passed is:"
end

视图/ match_picks / index.html.erb

<%= form_for adjust_match_picks_path, :method => :post do %>
  <% @match_picks.each do |pick| %> 
    <%= fields_for "match_picks[]", pick do |mp| %>
      <%= mp.text_field :id %>
      <%= mp.text_field :result_pick %>
  <% end %>  
<% end %>

上面生成的HTML如下： -

  <form accept-charset="UTF-8" action="/match_picks" method="post"><div style="display:none"><input name="utf8" type="hidden" value="&#x2713;" /><input name="authenticity_token" type="hidden" value="EIEFdhjkkfnkjfYjlkjdlkjCzxaxHeaXbkvu0wbLB1QsOj+o=" /></div>

以上代码出现以下错误：

    ActionController::ParameterMissing in MatchPicksController#create

    param is missing or the value is empty: match_pick

然后重点介绍这一段

        def match_pick_params
          params.require(:match_pick).permit(:user_id, :match_id, :round_id, :result_pick, :team_id, :try_pick, :margin_id, :result_points, :try_points, :margin_points, :random, :closed)
        end

我在match_picks控制器中的每个方法中都进行了一些调试，表单提交似乎触发了控制器的create方法而不是我的自定义adjust_match_picks方法。它看起来像错误是触发因为创建方法没有被传递match_pick_params。但是我不想触发create方法，我希望自定义adjust_match_picks触发。

我还没有输入任何代码来处理传递给adjust_match_picks的内容，因为我甚至无法触发它。

我希望我在这里做一些事情，因为我在我的智慧结束。谢谢你的期待。

修改1

按下提交按钮时传递的参数是：

Parameters: {"utf8"=>"✓", "authenticity_token"=>"EIEFdhjkkfnkjfYjlkjdlkjCzxaxHeaXbkvu0wbLB1QsOj+o=", "match_picks"=>{"1"=>{"id"=>"1", "result_pick"=>"6"}, "2"=>{"id"=>"2", "result_pick"=>""}, "3"=>{"id"=>"3", "result_pick"=>""}, "4"=>{"id"=>"4", "result_pick"=>""}, "5"=>{"id"=>"5", "result_pick"=>""}, "6"=>{"id"=>"6", "result_pick"=>""}, "7"=>{"id"=>"7", "result_pick"=>""}, "8"=>{"id"=>"8", "result_pick"=>""}, "9"=>{"id"=>"9", "result_pick"=>""}, "10"=>{"id"=>"10", "result_pick"=>""}, "11"=>{"id"=>"11", "result_pick"=>""}, "12"=>{"id"=>"12", "result_pick"=>""}, "13"=>{"id"=>"13", "result_pick"=>""}, "14"=>{"id"=>"14", "result_pick"=>""}, "15"=>{"id"=>"15", "result_pick"=>""}, "16"=>{"id"=>"16", "result_pick"=>""}, "17"=>{"id"=>"17", "result_pick"=>""}, "18"=>{"id"=>"18", "result_pick"=>""}, "19"=>{"id"=>"19", "result_pick"=>""}, "20"=>{"id"=>"20", "result_pick"=>""}, "21"=>{"id"=>"21", "result_pick"=>""}, "22"=>{"id"=>"22", "result_pick"=>""}, "23"=>{"id"=>"23", "result_pick"=>""}, "24"=>{"id"=>"24", "result_pick"=>""}, "25"=>{"id"=>"25", "result_pick"=>""}, "26"=>{"id"=>"26", "result_pick"=>""}, "27"=>{"id"=>"27", "result_pick"=>""}, "28"=>{"id"=>"28", "result_pick"=>""}, "29"=>{"id"=>"29", "result_pick"=>""}, "30"=>{"id"=>"30", "result_pick"=>""}, "31"=>{"id"=>"31", "result_pick"=>""}, "32"=>{"id"=>"32", "result_pick"=>""}, "33"=>{"id"=>"33", "result_pick"=>""}, "34"=>{"id"=>"34", "result_pick"=>""}, "35"=>{"id"=>"35", "result_pick"=>""}, "36"=>{"id"=>"36", "result_pick"=>""}, "37"=>{"id"=>"37", "result_pick"=>""}, "38"=>{"id"=>"38", "result_pick"=>""}, "39"=>{"id"=>"39", "result_pick"=>""}, "40"=>{"id"=>"40", "result_pick"=>""}, "41"=>{"id"=>"41", "result_pick"=>""}, "42"=>{"id"=>"42", "result_pick"=>""}, "43"=>{"id"=>"43", "result_pick"=>""}, "44"=>{"id"=>"44", "result_pick"=>""}, "45"=>{"id"=>"45", "result_pick"=>""}, "46"=>{"id"=>"46", "result_pick"=>""}, "47"=>{"id"=>"47", "result_pick"=>""}, "48"=>{"id"=>"48", "result_pick"=>""}}, "button"=>""}

编辑2（求助）

我意识到我使用的是form_for而不是form_tag。当我将其更改为form_tag我的自定义路线触发时。傻错!!谢谢你看

Answer 1

您应该使用form_tag而不是form_for，因为您在此处没有使用表单中的任何模型对象。

Answer 2

切换

params.require(:match_pick)

到

params.require(:match_picks)

Rails 4更新多个记录

2 个答案: