How to use Ransack Aliases

问题

I am trying to implement aliases with Ransack to make my URL search query shorter.

According to the docs: https://github.com/activerecord-hackery/ransack#ransack-aliases

class Post < ActiveRecord::Base
  belongs_to :author

  # Abbreviate :author_first_name_or_author_last_name to :author
  ransack_alias :author, :author_first_name_or_author_last_name
end

However when i use it in my model, i get a

undefined method `ransack_alias' for #<Class:0x007f9376f176e0> 

回答1:

As I understand, ransack_alias appeared in the master branch of the ransack, in 1.7.0(current stable) it was not implemented.

回答2:

You should use the latest updates, use the master branch.

gem 'ransack', github: 'activerecord-hackery/ransack'

回答3:

method ransack_alias was appeared in v 1.8.0

Ransack 1.8.0 changelog

update your Gemfile gem version

gem 'ransack', '~> 1.8.0'

来源：https://stackoverflow.com/questions/34738623/how-to-use-ransack-aliases