希望有人能指向我正确的方向.
我有一个控制器Update def运行“update_attributes”.目前它返回false,没有错误消息.我对Ruby很新,但不是编码,而且这让我感到好几天！我试图使用下面指定的值来获取用户模型和数据库更新.
def update
#get currently logged in user
@user = current_user
#update user params based on edit form...
if @user.update_attributes(params[:user])
redirect_to profile_path,:notice => "Successfully updated profile."
else
render :action => 'edit'
end
end
我的编辑def ….
def edit
@user = current_user
end
表单发送以下更新方法：
--- !ruby/hash:ActiveSupport::HashWithIndifferentAccess utf8: ✓ _method: put authenticity_token: 9T4ihVI0p8j7pZEFxof3Bfahi2a+o3BPmtXJDnfHT4o= user: !ruby/hash:ActiveSupport::HashWithIndifferentAccess first_name: Amanda last_name: Ross is_owner: '1' email: example@googlemail.com commit: Update action: update controller: users id: '20'
而params [：user]返回：
{"first_name"=>"Amanda","last_name"=>"Ross","is_owner"=>"1","email"=>"example@googlemail.com"}
所有这些字段都在型号的attr_accessible中,我可以创建一个用户没有任何问题.
这里的development.log输出(对不起,有点凌乱)….
Started PUT "/users/20" for 127.0.0.1 at 2012-04-17 10:39:29 +0100
Processing by UsersController#update as HTML
Parameters: {"utf8"=>"✓","authenticity_token"=>"9T4ihVI0p8j7pZEFxof3Bfahi2a+o3BPmtXJDnfHT4o=","user"=> {"first_name"=>"Amanda","email"=>"example@googlemail.com"},"commit"=>"Update","id"=>"20"}
[1m[36mUser Load (1.0ms)[0m [1mSELECT "users".* FROM "users" WHERE "users"."id" = 20 LIMIT 1[0m
>>>>>>>>>>>>
{"first_name"=>"Amanda","email"=>"example@googlemail.com"}
[1m[35m (0.0ms)[0m begin transaction
[1m[36mUser Exists (0.0ms)[0m [1mSELECT 1 FROM "users" WHERE (LOWER("users"."email") = LOWER('example@googlemail.com') AND "users"."id" != 20) LIMIT 1[0m
[1m[35mUser Exists (0.0ms)[0m SELECT 1 FROM "users" WHERE ("users"."email" = 'example@googlemail.com' AND "users"."id" != 20) LIMIT 1
[1m[36m (0.0ms)[0m [1mrollback transaction[0m
Rendered users/_form.html.erb (7.0ms)
Rendered users/edit.html.erb within layouts/application (10.0ms)
Rendered layouts/_includes.html.erb (30.0ms)
有人可能有帮助指出我要错了吗？
提前致谢！
解决方法
#update_attributes和#save将首先检查您的模型实例是否#valid？然后继续写入数据库.如果您的模型实例不是#valid？,那么这些方法将返回false.看看你的模型实例有什么问题,看看你的模型的#errors.
Rails.logger.info(@user.errors.messages.inspect)
或者,嵌入您的方法,
def update
@user = current_user
if @user.update_attributes(params[:user])
redirect_to profile_path,:notice => "Successfully updated profile."
else
# print the errors to the development log
Rails.logger.info(@user.errors.messages.inspect)
render :action => 'edit'
end
end