Merge pull request #1 from mislav/will_paginate

Add support for will_paginate

Author: davidcelis

api-pagination.gemspec

@@ -16,9 +16,6 @@ Gem::Specification.new do |s|
   s.test_files    = Dir['spec/**/*']
   s.require_paths = ['lib']
 
-  s.add_dependency 'rails', '>= 3.0.0'
-  s.add_dependency 'kaminari', '>= 0.13.0'
-
-  s.add_development_dependency 'bundler', '~> 1.3'
-  s.add_development_dependency 'rspec-rails'
+  s.add_development_dependency 'actionpack'
+  s.add_development_dependency 'rspec'
 end

lib/api-pagination.rb

@@ -1,5 +1,4 @@
 require 'api-pagination/version'
-require 'kaminari'
 
 module ApiPagination
   protected
@@ -29,3 +28,10 @@ def paginate(scope)
 
 ActionController::Base.send(:include, ApiPagination) if defined?(ActionController::Base)
 ActionController::API.send(:include, ApiPagination)  if defined?(ActionController::API)
+
+if defined?(WillPaginate::CollectionMethods)
+  WillPaginate::CollectionMethods.module_eval do
+    def first_page?() !previous_page end
+    def last_page?() !next_page end
+  end
+end

spec/controllers/numbers_controller_spec.rb

@@ -1,6 +1,35 @@
 require 'spec_helper'
 
-describe NumbersController do
+Rails.application.routes.draw do
+  resources :numbers, only: [:index]
+end
+
+# quacks like Kaminari
+PaginatedSet = Struct.new(:current_page, :total_count) do
+  def limit_value() 25 end
+
+  def total_pages
+    total_count.zero? ? 1 : (total_count.to_f / limit_value).ceil
+  end
+
+  def first_page?() current_page == 1 end
+  def last_page?() current_page == total_pages end
+end
+
+class NumbersController < ActionController::Base
+  include Rails.application.routes.url_helpers
+
+  after_filter only: [:index] { paginate(:numbers) }
+
+  def index
+    page = params.fetch(:page, 1).to_i
+    total = params.fetch(:count).to_i
+    @numbers = PaginatedSet.new(page, total)
+    render json: @numbers
+  end
+end
+
+describe NumbersController, :type => :controller do
   describe 'GET #index' do
     context 'without enough items to give more than one page' do
       it 'should not paginate' do