Installation

# Gemfile
gem 'acts_as_permalinkable'

Usage

To generate parameterized string from title column to slug column before validation:

class Post < ActiveRecord::Base
  acts_as_permalinkable :title, :slug
end

You probably want to change the way finding the record using find_by:

def set_post
  @post = Post.find_by(slug: params[:id])
end

If there are both name and permalink columns, simplly write:

class Post < ActiveRecord::Base
  acts_as_permalinkable
  # same as `acts_as_permalinkable :name, :permalink`
end

What does it do?

• Validates presence and uniqueness of target column.
• Generate parameterized string from source column to target column before validation if the target colmn is blank.
• Override to_param, returnes the value of target column.
• If the value of source column is not ASCII, a random string is generated insteadly.