Allow to exclude certain categories from paginated posts #6 - no test

lib/jekyll-paginate/pagination.rb

@@ -39,6 +39,18 @@ def generate(site)
       #                   "next_page" => <Number> }}
       def paginate(site, page)
         all_posts = site.site_payload['site']['posts'].reject { |post| post['hidden'] }
+
+        # can be moved to Jekyll:Configuration:fix_common_issues
+        if !site.config['not_paginated_categories'].nil? && !site.config['not_paginated_categories'].is_a?(Array)
+          Jekyll.logger.warn "Config Warning:", "The `not_paginated_categories` key must be an array" +
+              " It's currently set to '#{config['not_paginated_categories'].inspect}'."
+          config['not_paginated_categories'] = nil
+        end
+
+        if !site.config['not_paginated_categories'].nil?
+          all_posts = filter(site, all_posts)
+        end
+
         pages = Pager.calculate_pages(all_posts, site.config['paginate'].to_i)
         (1..pages).each do |num_page|
           pager = Pager.new(site, num_page, all_posts, pages)
@@ -80,6 +92,31 @@ def self.template_page(site)
         end.first
       end
 
+      # Public: Filter posts list depending on categories
+      #
+      # site - the Jekyll::Site object
+      # posts - array of site.posts
+      #
+      # Returns array of filtered posts that are not in a **not_paginated_categories**
+      def filter(site, posts)
+        posts.reject{ |post| excluded?(site, post) }
+      end
+
+      # Public: Vote if a post is from an excluded category
+      #
+      # site - the Jekyll::Site object
+      # post - a Jekyll::Post  object
+      #
+      # Returns bolean true if excluded - false if not
+      def excluded?(site, post)
+        post.categories.each do |c|
+          if site.config['not_paginated_categories'].index(c)
+            return true
+          end
+        end
+        return false
+      end
+
     end
   end
 end