如何解决未定义的方法`find_by_friendly_id”

Question

我想这

Opportunity.find_by_friendly_id(params[:id]) 

与friendly_id Rails应用程序配置里面。我得到

undefined method `find_by_friendly_id' for #<Class:0x007f8060395ca0> Did you mean? find_by_sql 

有趣的是，这个工程：

Opportunity.friendly.find(params[:id]) 

回事请告诉我？

下面是https://github.com/norman/friendly_id/blob/master/lib/friendly_id/finder_methods.rb

# If you want to search only by the friendly id, use {#find_by_friendly_id}. 
# @raise ActiveRecord::RecordNotFound 

更新文档：有人想看到这一点：

$ cat components/core/app/models/opportunity.rb | grep friendly 
    friendly_id :slug_candidates, use: :slugged 
$ 

Answer 1

我结束了根据加入finders到模型

friendly_id :foo, :use => [:slugged, :finders]