devleopers_controller.rb

class DevelopersController < ApplicationController
  respond_to :hal

  FILTERS = {
    :created_since        => ->(p,d) {d.where(:created_at.gte => p.to_i)},
    :last_activity_since  => ->(p,d) {d.with_last_activity_after(p)},
    :email_address        => ->(p,d) {d.where(email_address: p)},
    :api_key              => ->(p,d) {d.where(api_key: p)}
  }
  
  def index
    @developers = FILTERS.reduce( Developer.page(params[:page] || 1) ) do |developers, filter|
      key, f = filter
      if params.has_key?( key )
        f.call( params[key], developers )
      else
        developers
      end
    end

    @count = @developers.count
    @developers = @developers.per(10)
  end

  def show
    @developer = Developer.where(api_key: params[:id]).first
  end
end