Rails 4 的 best_in_place gem 复选框问题（为啥字符串没有转换为布尔值？）

Posted 2023-02-15

【中文标题】Rails 4 的 best_in_place gem 复选框问题（为啥字符串没有转换为布尔值？）

【英文标题】：best_in_place gem checkbox issue with Rails 4 (why is string not converted to boolean?)Rails 4 的 best_in_place gem 复选框问题（为什么字符串没有转换为布尔值？）

【发布时间】：2014-01-31 08:13:26

【问题描述】：

我的申请中有以下内容：

# some_view_file.html.haml
= best_in_place element, :inbox, :type => :checkbox

# imap_accounts_controller.rb
def update
  element = ImapAccount.find(params[:id])
  element.update_attributes(params[:imap_account])
  respond_with element
end

但是布尔模型属性没有得到更新。也不会抛出任何错误。知道为什么我的应用程序不将 "true" 或 "false" 字符串转换为布尔值。

我已经做到了like shown in the documentation。但似乎 Rails 4 默认情况下通常不会像 like exemplified in this SO post 那样从视图/控制器接收布尔值。

服务器日志说：

Started PUT "/en/imap_accounts/525188ea83c336a4eb000002" for 127.0.0.1 at 2014-01-12 16:43:22 +0100
Processing by ImapAccountsController#update as JSON
  Parameters: "imap_account"=>"enable_ssl"=>"false", "authenticity_token"=>"mX+Dpghb8nB49qhFTLbGSB2w3pJQg56PBgg8jR7G3/Y=", "locale"=>"da", "id"=>"525188ea83c336a4eb000002"
  MOPED: 127.0.0.1:27017 QUERY        database=myapp_development collection=users selector="$query"=>"_id"=>BSON::ObjectId('518f599683c336fb87000003'), "$orderby"=>:_id=>1 flags=[] limit=-1 skip=0 batch_size=nil fields=nil runtime: 0.8680ms
  MOPED: 127.0.0.1:27017 QUERY        database=myapp_development collection=imap_accounts selector="_id"=>BSON::ObjectId('525188ea83c336a4eb000002') flags=[] limit=0 skip=0 batch_size=nil fields=nil runtime: 0.4400ms
  MOPED: 127.0.0.1:27017 QUERY        database=myapp_development collection=imap_accounts selector="_id"=>BSON::ObjectId('525188ea83c336a4eb000002') flags=[] limit=0 skip=0 batch_size=nil fields=nil runtime: 0.6020ms
  MOPED: 127.0.0.1:27017 QUERY        database=myapp_development collection=users selector="$query"=>"_id"=>BSON::ObjectId('518f599683c336fb87000003'), "$orderby"=>:_id=>1 flags=[] limit=-1 skip=0 batch_size=nil fields=nil runtime: 0.3010ms
  MOPED: 127.0.0.1:27017 QUERY        database=myapp_development collection=imap_accounts selector="_id"=>BSON::ObjectId('525188ea83c336a4eb000002') flags=[] limit=0 skip=0 batch_size=nil fields=nil runtime: 0.5740ms
Completed 204 No Content in 182ms

【参考方案1】：

你可以通过这样做来解决你当前的问题......

# imap_accounts_controller.rb
def update
  element = ImapAccount.find(params[:id])
  element.update_attributes(params[:imap_account] == "true")
  respond_with element
end

或者如果参数值是“1”，正如 best_in_place 文档所说，那么它会是

# imap_accounts_controller.rb
def update
  element = ImapAccount.find(params[:id])
  element.update_attributes(params[:imap_account] == "1")
  respond_with element
end

此外，这个 gem 看起来也可以很好地解决这个问题 https://github.com/prodis/wannabe_bool