Add max_pages and max_pages_per methods to limit displayed pages per model or globally

lib/kaminari/config.rb

@@ -24,6 +24,7 @@ module Kaminari
     config_accessor :left
     config_accessor :right
     config_accessor :page_method_name
+    config_accessor :max_pages
 
     def param_name
       config.param_name.respond_to?(:call) ? config.param_name.call : config.param_name
@@ -45,5 +46,6 @@ module Kaminari
     config.right = 0
     config.page_method_name = :page
     config.param_name = :page
+    config.max_pages = nil
   end
 end

lib/kaminari/models/configuration_methods.rb

@@ -29,6 +29,20 @@ module Kaminari
       def max_per_page
         @_max_per_page || Kaminari.config.max_per_page
       end
+
+      # Overrides the max_pages value per model
+      #   class Article < ActiveRecord::Base
+      #     max_pages_per 100
+      #   end
+      def max_pages_per(val)
+        @_max_pages = val
+      end
+
+      # This model's max_pages value
+      # returns max_pages value unless explicitly overridden via <tt>max_pages_per</tt>
+      def max_pages
+        @_max_pages || Kaminari.config.max_pages
+      end
     end
   end
 end

lib/kaminari/models/page_scope_methods.rb

@@ -18,7 +18,12 @@ module Kaminari
 
     # Total number of pages
     def total_pages
-      (total_count.to_f / limit_value).ceil
+      total_pages_count = (total_count.to_f / limit_value).ceil
+      if max_pages.present? && max_pages < total_pages_count
+        max_pages
+      else
+        total_pages_count
+      end
     end
     #FIXME for compatibility. remove num_pages at some time in the future
     alias num_pages total_pages