Ruby utility methods for pagination page and per page that make sure you'll always have a valid number. Use them your controllers or model or anywhere where you process page info. Moved to https://github.com/sshaw/page_number.git

page_number.gemspec

Gem::Specification.new do |s|
  s.name        = "page_number"
  s.version     = "0.0.2"
  s.date        = "2016-09-19"
  s.summary     = "Utility methods for pagination page and per page that make sure you'll always have a valid number."
  s.description =<<-DESC
     Utility methods for pagination page and per page that make sure you'll always have a valid number.
     Use them your controllers or model or anywhere where you process page info.
  DESC
  s.authors     = ["Skye Shaw"]
  s.email       = "skye.shaw@gmail.com"
  s.files       = Dir["*.rb"]
  s.require_paths = ["."]
  s.homepage    = "https://gist.github.com/sshaw/83f7ad7ce9c8f92a833f6d6530a2495c"
  s.license     = "MIT"
end

page_number.rb

#
# Utility methods for pagination page, and per page values.
# https://gist.github.com/sshaw/83f7ad7ce9c8f92a833f6d6530a2495c
#
# By: Skye Shaw (https://github.com/sshaw)
# Date: 2016-06-20
#
# === Usage
#
# require "page_number"
#
# class BaseController
#   include PageNumber
#
#   protected
#
#   def page_sizes
#     [ 25, 50, 100 ]
#   end
# end
#
# class SubController < BaseController
#   def action
#     User.all(:page => page(params[:page]), :per_page => per_page(params[:per_page]))
#   end
# end
#

module PageNumber
  def page(n)
    n = __int(n)
    return default_page if n < 1

    max_page_number && n > max_page_number ? max_page_number : n
  end

  alias :__page :page

  def per_page(n)
    n = __int(n)
    return default_per_page if n < 1

    page_sizes && !page_sizes.include?(n) ? default_per_page : n
  end

  alias :__per_page :per_page

  # Override these as you see fit.
  protected

  def default_per_page
    10
  end

  def default_page
    1
  end

  def max_page_number
  end

  def page_sizes
  end

  private

  def __int(n)
    case
    when n.respond_to?(:to_i)
      n.to_i
    when n.respond_to?(:to_int)
      n.to_int
    else
      -1
    end
  end
end

Why not open source it?

Why not open source it?

What do you mean, this is open sourced..?

I mean, I'd like you to open source it as a rubygem.

https://rubygems.org/search?utf8=%E2%9C%93&query=page_number

I wanna use it just by doing gem 'page_number'. :)

Or can I upload this on rubygem?

You know you can do this?

gem "page_number", :gist => "83f7ad7ce9c8f92a833f6d6530a2495c"

Does that work for you?

Checkout Bundler's docs on gist source.

Yes, I know, and it works for me. (Thanks for the information!)

But what if this gist is changed or removed unexpectedly? Ruby gem is more trustable for gem users, I guess.

@toshimaru https://rubygems.org/gems/page_number 😃

Thanks ❤️