我错过了什么？我正在尝试使用Active资源的休息服务,我有以下内容：
class User < ActiveResource::Base
self.site = "http://localhost:3000/"
self.element_name = "users"
self.format = :json
end
user = User.new(
:name => "Test",:email => "test.user@domain.com")
p user
if user.save
puts "success: #{user.uuid}"
else
puts "error: #{user.errors.full_messages.to_sentence}"
end
#<User:0x1011a2d20 @prefix_options={},@attributes={"name"=>"Test","email"=>"test.user@domain.com"}>
而这个错误：
/Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1233:in `new': allocator undefined for Data (TypeError)
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1233:in `load'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1219:in `each'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1219:in `load'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1322:in `load_attributes_from_response'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1316:in `create_without_notifications'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1314:in `tap'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1314:in `create_without_notifications'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/observing.rb:11:in `create'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1117:in `save_without_validation'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/validations.rb:87:in `save_without_notifications'
from /Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/observing.rb:11:in `save'
from import_rest.rb:22
如果我用户为我的休息服务卷曲,那就像：
curl -v -X POST -H 'Content-Type: application/json' -d '{"name":"test curl","email":"test@gmail.com"}' http://localhost:3000/users
回复：
{"email":"test@gmail.com","name":"test curl","admin":false,"uuid":"afb8c98b-562a-4603-bbe4-f8f0816cef0d","creation_limit":5}
解决方法
有一个名为Data的内置类型,其目的是
rather mysterious.您似乎碰到了它：
$ruby -e 'Data.new' -e:1:in `new': allocator undefined for Data (TypeError) from -e:1
问题是,它是如何实现的？最后一个堆栈框架将我们设置为here.因此,看起来数据在调用find_or_create_resource_for之后徘徊.代码分支here很可能：
$irb
>> class C
>> end
=> nil
>> C.const_get('Data')
=> Data
这导致我怀疑你有一个属性或类似名称：数据或“数据”,即使你没有提到上面的一个.你呢？特别是,似乎我们有一个带有子哈希的JSON响应,其键是“数据”.
这是一个可以触发精心设计的输入错误的脚本,但不是来自您发布的响应：
$cat ./activeresource-oddity.rb
#!/usr/bin/env ruby
require 'rubygems'
gem 'activeresource','3.0.10'
require 'active_resource'
class User < ActiveResource::Base
self.site = "http://localhost:3000/"
self.element_name = "users"
self.format = :json
end
USER = User.new :name => "Test",:email => "test.user@domain.com"
def simulate_load_attributes_from_response(response_body)
puts "Loading #{response_body}.."
USER.load User.format.decode(response_body)
end
OK = '{"email":"test@gmail.com","creation_limit":5}'
BORKED = '{"data":{"email":"test@gmail.com","creation_limit":5}}'
simulate_load_attributes_from_response OK
simulate_load_attributes_from_response BORKED
生产..
$./activeresource-oddity.rb
Loading {"email":"test@gmail.com","creation_limit":5}..
Loading {"data":{"email":"test@gmail.com","creation_limit":5}}..
/opt/local/lib/ruby/gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1233:in `new': allocator undefined for Data (TypeError)
from /opt/local/lib/ruby/gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1233:in `load'
from /opt/local/lib/ruby/gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1219:in `each'
from /opt/local/lib/ruby/gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb:1219:in `load'
from ./activeresource-oddity.rb:17:in `simulate_load_attributes_from_response'
from ./activeresource-oddity.rb:24
如果我是你,我会打开/Library/Ruby/Gems/1.8/gems/activeresource-3.0.10/lib/active_resource/base.rb,在1320行找到load_attributes_from_response并暂时更改
load(self.class.format.decode(response.body))
至
load(self.class.format.decode(response.body).tap { |decoded| puts "Decoded: #{decoded.inspect}" })
..并再次重现错误,看看你的json解码器真正出现了什么.