SEO friendly urls for mongo

I want to replace url posts/:id with posts/:title in mongo. Is there any way to do it. I tried using key in model

class Post
  include Mongoid::Document
  include Mongoid::Timestamps

  field :title
  key :title
end

but my url does not change and also I am getting this error Document not found for class Post with id(s)

Am I missing st开发者_如何学Ch here?

Why are you using

field :key

The correct syntax should be rather key :field_name For further reference on how to use the key check out this link and scroll to the bottom

I doubt it would change the routes though.

If you are using Mongoid instead of the ActiveRecord you can use a gem called slugoid, slugoid

to generate pretty urls.