Ruby on rails 不能'；找不到id=资产的模型

我正在使用rspec和poltergeist/phantomjs测试我的应用程序，在我安装gem-friendly_id以更改默认路由后，我的所有javascript测试都开始抛出以下错误：

Failure/Error: Unable to find matching line from backtrace
    ActiveRecord::RecordNotFound:
        Couldn't find SelectionProcess with id = assets

我的资产在test.rb中配置：

config.serve_static_assets = true 
config.static_cache_control = "public, max-age=3600"

回溯中的最后几行：

 # /Users/Augusto/.rvm/gems/ruby-1.9.3-p362@startupbase/gems/activerecord-3.2.12/lib/active_record/relation/finder_methods.rb:267:in `find_by_attributes'
 # /Users/Augusto/.rvm/gems/ruby-1.9.3-p362@startupbase/gems/activerecord-3.2.12/lib/active_record/dynamic_matchers.rb:50:in `method_missing'
 # /Users/Augusto/.rvm/gems/ruby-1.9.3-p362@startupbase/gems/cancan-1.6.9/lib/cancan/controller_resource.rb:109:in `find_resource'
 # /Users/Augusto/.rvm/gems/ruby-1.9.3-p362@startupbase/gems/cancan-1.6.9/lib/cancan/controller_resource.rb:68:in `load_resource_instance'
 # /Users/Augusto/.rvm/gems/ruby-1.9.3-p362@startupbase/gems/cancan-1.6.9/lib/cancan/controller_resource.rb:32:in `load_resource'
 # /Users/Augusto/.rvm/gems/ruby-1.9.3-p362@startupbase/gems/cancan-1.6.9/lib/cancan/controller_resource.rb:10:in `block in add_before_filter'

---

听起来像是资产URL的友好id。如果为根url（/）定义友好的\u id，则所有资产请求（/assets）都将被接管。因此，Rails尝试查找id=assets的记录。

能否添加实际调用

find

方法的部分？