Add kaminari paginator

README.md

@@ -31,6 +31,8 @@ This template uses [jsonapi-serializer](https://github.com/jsonapi-serializer/js
 3. Foreman
 For running multiple processes
 
+4. [Kaminari](https://github.com/kaminari/kaminari) paginator
+
 ### Authentication
 __Registration__
 

app/controllers/application_controller.rb

@@ -5,8 +5,9 @@ class ApplicationController < ActionController::API
   # acts_as_token_authentication_handler_for User
   around_action :handle_errors
 
-  def render_api_success(serializer, obj, _options = {})
-    render json: serializer.new(obj).serializable_hash
+  def render_api_success(serializer, obj, options = {})
+    options = Kaminari.meta_pagination(obj, options) if defined? obj.current_page
+    render json: serializer.new(obj, options).serializable_hash
   end
 
   def render_api_error(messages, code)

app/services/kaminari.rb

@@ -0,0 +1,20 @@
+module Kaminari
+  def self.meta_pagination(paginated_obj, options = {})
+    options[:meta] = {} unless options.key?(:meta)
+    meta_options = options[:meta].merge(generate_pagination(paginated_obj))
+    options[:meta] = meta_options
+    options
+  end
+
+  def self.generate_pagination(paginated_obj)
+    {
+      pagination: {
+        current_page: paginated_obj.current_page,
+        prev_page: paginated_obj.prev_page,
+        next_page: paginated_obj.next_page,
+        total_pages: paginated_obj.total_pages,
+        total_count: paginated_obj.total_count
+      }
+    }
+  end
+end

template.rb

@@ -33,6 +33,7 @@ def add_template_repository_to_source_path
 
 # Gems
 def add_gems
+  gem 'kaminari'
   gem 'devise', '~> 4.7', '>= 4.7.1'
   gem 'jwt', '~> 2.2', '>= 2.2.1'
   gem 'jsonapi-serializer', '~> 2.1.0'