Ruby-on-rails rails：堆栈级别太深
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rails : stack level too deep
提问by msusplugas
Actually i'm on a project for a model many->many. I need to find with a current user all credits/devices/project (and I think it's useless to have a table credit with only two column (id & score) so I merge this table to the join table).
实际上，我正在做一个模型很多-> 很多的项目。我需要找到当前用户的所有积分/设备/项目（我认为只有两列（id 和 score）的表积分是没用的，所以我将此表合并到连接表中）。
I get this error :
我收到此错误：
SystemStackError in Users#show
Showing app/views/shared/_credit.html.erb where line # raised:
stack level too deep
And the two model :
和两个模型：
class **Credit** < ActiveRecord::Base
attr_accessible :created_at, :credit_id, :device_id, :project_id, :score, :user_id
belongs_to :device
belongs_to :user
belongs_to :project
belongs_to :score
end
class **User** < ActiveRecord::Base
has_many :credit
has_many :credit, :through => :credit, foreign_key: "user_id", dependent: :destroy
end
Thank !
谢谢 ！
Best.
最好的事物。
回答by bento
Stack level to deep points to an infinitive recursive call, and I would say you get that with
堆栈级别到深度指向一个不定式递归调用，我会说你明白了
has_many :credit, :through => :credit,
which clearly introduces a cycle of some sort.
这清楚地引入了某种循环。
