Initial commit

classes/pagination.rb

@@ -0,0 +1,20 @@
+class Paginator
+  attr_reader :page, :per_page
+
+  def initialize(params, per_page, custom_name = 'p')
+    @current_page = params[custom_name].nil? || params[custom_name].to_i < 1 ? 1 : params[custom_name].to_i
+    @per_page = per_page
+  end
+
+  def get_page(items)
+    start_index = (@current_page - 1) * @per_page
+    items[start_index, @per_page]
+  end
+
+  def pages_info(items)
+    total_pages = (items.length / @per_page.to_f).ceil
+    (1..total_pages).map do |page_number|
+      { page: page_number, is_current: page_number == @current_page }
+    end
+  end
+end