rebase_attr 
Convert an attribute to a specified base.
When do you need this?
- If your IDs are too long to show, just convert to base 36 (digits and lower case letters).
Installation
Add this line to your application's Gemfile:
gem 'rebase_attr'And then execute:
$ bundle
Or install it yourself as:
$ gem install rebase_attr
Usage
Example for an active record table with long IDs:
# == Schema Info
#
# Table name: medical_bills
#
# id :integer(11) not null, primary key
#
class Bill < ActiveRecord::Base
rebase_attr :id, to: 32, readable: true # digits and leters, without '0', 'o', '1' and 'l'
endThen use it:
bill = Bill.find(3151957185711)
bill.id
=> "2rnfkjw5f"
bill.id_without_rebase
=> 3151957185711
bill.id = "gw88yeya"
bill.id_without_rebase
=> 572581263402Other functions you get when using rebase_attr:
bill.id_without_rebase = 3151957185711
bill.id
=> "2rnfkjw5f"
Bill.find(Bill.decode_id("2rnfkjw5f"))
=> #<Bill id: 3151957185711>
bill.decode_id("2rnfkjw5f")
=> 3151957185711
Bill.encode_id(3151957185711)
=> "2rnfkjw5f"
bill.encode_id(3151957185711)
=> "2rnfkjw5f"Options you can pass to rebase_attr:
# Have :x return base 16, while '0' and '1' are replaced with 'x' and 'y', and then uppercased.
rebase_attr :x, to: 16, readable: true, convert: :upcase
# Have both :x and :y converted from a backend of octal string to a binary string, adding a 'b' in the beginning.
rebase_attr :x, :y, from: 8, to: 2, convert: -> (v) { "b#{v}" }, deconvert: -> (v) { v[1..-1] }Example usage on your own class (not ActiveRecord):
class Bill
module Identifiable
attr_accessor :id # using attr_accessor on Bill will create methods with higher priority than rebase_attr.
end
include Identifiable
rebase_attr :id, to: 32
endContributing
- Fork it ( https://github.com/odedniv/rebase_attr/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request