- Fixes mislav#452

- Fix total_pages method to work with per_page = 0

lib/will_paginate/collection.rb

@@ -13,7 +13,7 @@ module WillPaginate
   # This module provides few of these methods.
   module CollectionMethods
     def total_pages
-      total_entries.zero? ? 1 : (total_entries / per_page.to_f).ceil
+      total_entries.zero? || per_page.zero? ? 1 : (total_entries / per_page.to_f).ceil
     end
 
     # current_page - 1 or nil if there is no previous page

spec/collection_spec.rb

@@ -27,7 +27,7 @@
     result = (1..50).to_a.paginate
     result.current_page.should == 1
     result.size.should == 30
-  end
+	end
 
   it "should give total_entries precedence over actual size" do
     %w(a b c).paginate(:total_entries => 5).total_entries.should == 5
@@ -68,8 +68,15 @@
       collection = create(3, 1, 3)
       collection.previous_page.should == 2
       collection.next_page.should be_nil
-    end
-  end
+		end
+	end
+
+	describe "num_page is zero" do
+		it "should have total_pages 1 when num_page is zero" do
+			collection = create(1,0,1)
+			collection.total_pages.should == 1
+		end
+	end
 
   describe "out of bounds" do
     it "is out of bounds when page number is too high" do