关于ruby on rails：通过关联对象创建现有模型的新对象时遇到麻烦

troubles creating a new object of existing model through association object

我正在尝试通过关联创建一个新对象，如下所示：

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def create
@enhancement = current_user.enhancements.create enhancement_params

if @enhancement.save!
redirect_to enhancements_path, notice:"Mission Control has receieved your request"
else
redirect_to enhancements_path, notice:"Danger! Mission Control could not receive your request!"
end
end

我得到的错误是：

1	wrong number of arguments (1 for 0)

我也试过了

1	@enhancement = current_user.enhancements.new enhancement_params

然后为了您可能的参考，这里是我传递的强大参数

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def enhancement_params
params.require(:enhancement).permit(:name, :description, :user_id, :status)
end

关联方面，模型增强属于用户模型，用户模型具有多种增强功能。

我不知道我做错了什么，偷偷摸摸的怀疑我错过了一些非常简单的东西，但我浪费了足够的时间在这上面。有什么想法发生了什么？我能给你什么其他信息吗？

更新 -

我只是在做

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def create
@enhancement = Enhancement.create enhancement_params
if @enhancement.save
redirect_to enhancements_path, notice:"Mission Control has receieved your request"
else
redirect_to enhancements_path, notice:"Danger! Mission Control could not receive your request!"
end
end

这是错误：
错误的参数个数(1表示0)

Started POST"/enhancements" for 127.0.0.1 at 2014-03-20 16:29:38
-0500 Processing by EnhancementsController#create as HTML Parameters: {"utf8"=>"?",
"authenticity_token"=>"pKfKnNGB4CWNSBOOKAe/l6Em+MSV5l+tLS0kDRTCQEc=",
"enhancement"=>{"name"=>"Wow what enhancemnt","description"=>"such
enhamcnet

very wow"},"commit"=>"Save Enhancement"} Completed
500 Internal Server Error in 3ms

ArgumentError - wrong number of arguments (1 for 0):
activerecord-deprecated_finders (1.0.3)
lib/active_record/deprecated_finders/base.rb:28:in call'
activerecord (4.0.2) lib/active_record/scoping/named.rb:163:inblock
(2 levels) in scope' activerecord (4.0.2)
lib/active_record/relation.rb:270:in scoping' activerecord (4.0.2)
lib/active_record/scoping/named.rb:163:inblock in scope'
activerecord (4.0.2) lib/active_record/persistence.rb:36:in create'
app/controllers/enhancements_controller.rb:12:increate' actionpack
(4.0.2) lib/action_controller/metal/implicit_render.rb:4:in
send_action' actionpack (4.0.2)
lib/abstract_controller/base.rb:189:inprocess_action' actionpack
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process_action' actionpack (4.0.2)
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lib/action_controller/metal/rescue.rb:29:inprocess_action'
actionpack (4.0.2)
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lib/rack/handler/webrick.rb:60:in service'
/Users/chris/.rbenv/versions/2.0.0-p353/lib/ruby/2.0.0/webrick/httpserver.rb:138:in
service'
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run'
/Users/chris/.rbenv/versions/2.0.0-p353/lib/ruby/2.0.0/webrick/server.rb:295:in
block in start_thread' `