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我跟隨Ryan Bates,Railscast episode 52,我翻譯了代碼的相關部分以使用Rails 3.0.0.beta2。在Ryan的情況下,他只是標記項目不完整並保存時間戳。如果項目包含時間戳記,模型將返回完成列表中的項目。如何將整個項目列表保存爲真或假?
我試圖保存所有值爲true或false,具體取決於是否選中check_box_tag(使用布爾值)。我只能保存選定的項目,對或錯。如何根據是否選中複選框將整個項目列表保存爲true或false?以下是我的嘗試:
控制器邏輯:
def yardsign
Add.update_all(["yardsign=?", true], :id => params[:yard_ids])
redirect_to adds_path
end
html.erb:
<%= form_tag yardsign_adds_path, :method => :put do %>
<% @adds.each do |add| %>
<td><%= check_box_tag "yard_ids[]", add.id %></td>
<% end %>
<% end %>
的routes.rb
resources :adds do
collection do
put :yardsign
end
end
終端
Started POST "/adds/yardsign" for 127.0.0.1 at 2010-04-15 19:22:49
Processing by AddsController#yardsign as HTML
Parameters: {"commit"=>"Update", "yardsigntakers"=>["1", "2"], "authenticity_token"=>"3arhsxg/Ky+0W7RNM2T3QditMTJmOnLR5CqmMYWN4Qw="}
User Load (0.3ms) SELECT "users".* FROM "users" WHERE ("users"."id" = 1) LIMIT 1
SQL (1.8ms) UPDATE "adds" SET yardsign='t' WHERE ("adds"."id" IN (1, 2))
Redirected to http://localhost:3000/adds