Fix pages after 1 on tag page

app/controllers/tags_controller.rb

@@ -52,7 +52,11 @@ class TagsController < ApplicationController
     end
 
     @posts = @posts.tagged_with(params[:name])
-    @posts = @posts.includes(:comments, :photos).order('created_at DESC').limit(15).offset(15*(params[:page]-1))
+
+    max_time = params[:max_time] ? Time.at(params[:max_time].to_i) : Time.now
+    @posts = @posts.where(StatusMessage.arel_table[:created_at].lt(max_time))
+
+    @posts = @posts.includes(:comments, :photos).order('posts.created_at DESC').limit(15)
 
     @posts = PostsFake.new(@posts)
     @commenting_disabled = true

app/helpers/aspects_helper.rb

@@ -1,4 +1,4 @@
-#/   Copyright (c) 2010, Diaspora Inc.  This file is
+#   Copyright (c) 2010, Diaspora Inc.  This file is
 #   licensed under the Affero General Public License version 3 or later.  See
 #   the COPYRIGHT file.
 

app/helpers/tags_helper.rb

@@ -0,0 +1,9 @@
+#   Copyright (c) 2011, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+
+module TagsHelper
+  def next_page_path
+    tag_path(@tag, :max_time => @posts.last.send(session[:sort_order].to_sym).to_i)
+  end
+end

app/models/user.rb

@@ -344,5 +344,4 @@ class User < ActiveRecord::Base
       mentioned_person.delete
     end
   end
-
 end

app/views/tags/show.haml

@@ -23,7 +23,7 @@
     - if @posts.length > 0
       = render 'shared/stream', :posts => @posts
       #pagination
-        =link_to(t('more'), tag_path(params[:name], :page => next_page), :class => 'paginate')
+        =link_to(t('more'), next_page_path, :class => 'paginate')
     - else
       = t('.nobody_talking', :tag => "##{params[:name]}")
 

features/infinite_scroll.feature

@@ -25,3 +25,13 @@ Feature: infinite scroll
       And I wait for the ajax to finish
       And I wait for the ajax to finish
       Then I should see 30 posts
+
+    Scenario: On a tag page
+      When I sign in as "bob@bob.bob"
+      And I am on the tag page for "seeded"
+      Then I should see 15 posts
+
+      When I scroll down
+      And I wait for the ajax to finish
+      And I wait for the ajax to finish
+      Then I should see 30 posts