Question

您是我的新手，并没有找到解决此特定问题的解决方案，请提供帮助。

该值未从视图传递到控制器操作。

这是我的观点。

         <%= form_tag({action: :update_table_one}, multipart: true, method: :post)  do%> 

                <label class=" control-label">Tables :</label>
                <%= select_tag 'val', options_for_select(@v.each{ |value| [ value ] }) %> <br> 

                <%= button_tag(type: 'submit', class: "btn btn-default") do %>
                 Submit
                <% end %>  

          <% end %>

这是我的控制器动作

def update_table_one 

    require 'pg'

    value = params[:val] 

    begin

          con = PG.connect :dbname => 'abc', :user => 'Mrx',
          :password => 'xyz'

          con.exec "DELETE FROM #{value}"  

      rescue PG::Error => e

          puts e.message 

      ensure

          con.close if con

    end            

end

这是我的控制台

Started GET "/page/update_table?utf8=%E2%9C%93&authenticity_token=pKvsDq8Lj5fI8Gw%2BIa%2BLMnsKIM%2FfElmrCHsQHmmK6xnqZrLr3ei4gVhCipEEu9ntO3fFZ9ZwncLwx0X%2Bdcnrjg%3D%3D&val=+tmp_kapow_test&button=" for ::1 at 2017-03-05 22:41:49 +0530
Processing by PageController#update_table as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"pKvsDq8Lj5fI8Gw+Ia+LMnsKIM/fElmrCHsQHmmK6xnqZrLr3ei4gVhCipEEu9ntO3fFZ9ZwncLwx0X+dcnrjg==", "val"=>" tmp_kapow_test", "button"=>""}
  Rendering page/update_table.html.erb within layouts/application
  Rendered page/update_table.html.erb within layouts/application (4.2ms)
Completed 200 OK in 2642ms (Views: 182.6ms | ActiveRecord: 0.0ms)

Answer 1

注意：取决于您的mov esi,esp ss lodsb ; size of LODS can change result to +-2 or +-4 (+-8 in 64b) sub esi,esp ; esi = +1/-1 for DF = 0/1, does clobber AL ; sets al ; to get AL = 0/1 for DF = 0/1

版本

ruby

将不与

相同

params[:val]

在这种情况下，最有可能出现问题。

值未从视图传递到控制器操作轨道

1 个答案: