title: NoMethodError in Users#show
body: <p>I'm following the rails tutorial @ <a href="http://railstutorial.org" rel="nofollow">http://railstutorial.org</a></p>
  
  <p>On chapter 11, I'm having issues with showing microposts from users.</p>
  
  <p>Based on the tutorial, the RSPEC test should pass. However, it fails </p>
  
  <hr>
  
  <pre><code> 1) UsersController GET 'show' should show the user's microposts
   Failure/Error: get :show, :id =&gt; @user
   undefined method `model_name' for NilClass:Class
   # ./app/views/users/show.html.erb:10:in `_app_views_users_show_html_erb__49
   # ./spec/controllers/users_controller_spec.rb:71
  </code></pre>
  
  <hr>
  
  <p>When I try to access a user's page which has microposts associated with it, I get an exception :</p>
  
  <pre><code>NoMethodError in Users#show
  
  Showing C:/Documents and Settings/XXXXX/workspace/sample_app/app/views/users/show.html.erb where line #10 raised:
  
  undefined method `model_name' for NilClass:Class
  Extracted source (around line #10):
  
  7:       &lt;/h1&gt;
  8:       &lt;% unless @user.microposts.empty? %&gt;
  9:         &lt;table class="microposts" summary="User microposts"&gt;
  10:           &lt;%= render @microposts %&gt;
  11:         &lt;/table&gt;
  12:         &lt;%= will_paginate @microposts %&gt;
  13:       &lt;% end %&gt;
  Rails.root: C:/Documents and Settings/XXXXX/workspace/sample_app
  
  Application Trace | Framework Trace | Full Trace
  actionpack (3.0.0) lib/action_view/render/partials.rb:319:in `partial_path'
  actionpack (3.0.0) lib/action_view/render/partials.rb:207:in `setup'
  actionpack (3.0.0) lib/action_view/render/partials.rb:186:in `initialize'
  actionpack (3.0.0) lib/action_view/render/partials.rb:331:in `new'
  actionpack (3.0.0) lib/action_view/render/partials.rb:331:in `_render_partial'
  actionpack (3.0.0) lib/action_view/render/rendering.rb:31:in `render'
  app/views/users/show.html.erb:10:in `_app_views_users_show_html_erb__49899798_36559632_0'
  actionpack (3.0.0) lib/action_view/template.rb:135:in `send'
  actionpack (3.0.0) lib/action_view/template.rb:135:in `render'
  activesupport (3.0.0) lib/active_support/notifications.rb:54:in `instrument'
  actionpack (3.0.0) lib/action_view/template.rb:127:in `render'
  actionpack (3.0.0) lib/action_view/render/rendering.rb:59:in `_render_template'
  activesupport (3.0.0) lib/active_support/notifications.rb:52:in `instrument'
  activesupport (3.0.0) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
  activesupport (3.0.0) lib/active_support/notifications.rb:52:in `instrument'
  actionpack (3.0.0) lib/action_view/render/rendering.rb:56:in `_render_template'
  actionpack (3.0.0) lib/action_view/render/rendering.rb:26:in `render'
  actionpack (3.0.0) lib/abstract_controller/rendering.rb:114:in `_render_template'
  actionpack (3.0.0) lib/abstract_controller/rendering.rb:108:in `render_to_body'
  actionpack (3.0.0) lib/action_controller/metal/renderers.rb:47:in `render_to_body'
  actionpack (3.0.0) lib/action_controller/metal/compatibility.rb:55:in `render_to_body'
  actionpack (3.0.0) lib/abstract_controller/rendering.rb:101:in `render_to_string'
  actionpack (3.0.0) lib/abstract_controller/rendering.rb:92:in `render'
  actionpack (3.0.0) lib/action_controller/metal/rendering.rb:17:in `render'
  actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb:40:in `render'
  activesupport (3.0.0) lib/active_support/core_ext/benchmark.rb:5:in `ms'
  c:/Ruby187/lib/ruby/1.8/benchmark.rb:308:in `realtime'
  activesupport (3.0.0) lib/active_support/core_ext/benchmark.rb:5:in `ms'
  actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb:40:in `render'
  actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb:78:in `cleanup_view_runtime'
  activerecord (3.0.0) lib/active_record/railties/controller_runtime.rb:15:in `cleanup_view_runtime'
  actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb:39:in `render'
  actionpack (3.0.0) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
  actionpack (3.0.0) lib/action_controller/metal/implicit_render.rb:5:in `send_action'
  actionpack (3.0.0) lib/abstract_controller/base.rb:150:in `process_action'
  actionpack (3.0.0) lib/action_controller/metal/rendering.rb:11:in `process_action'
  actionpack (3.0.0) lib/abstract_controller/callbacks.rb:18:in `process_action'
  activesupport (3.0.0) lib/active_support/callbacks.rb:435:in `_run__434435962__process_action__453433196__callbacks'
  activesupport (3.0.0) lib/active_support/callbacks.rb:409:in `send'
  activesupport (3.0.0) lib/active_support/callbacks.rb:409:in `_run_process_action_callbacks'
  activesupport (3.0.0) lib/active_support/callbacks.rb:93:in `send'
  activesupport (3.0.0) lib/active_support/callbacks.rb:93:in `run_callbacks'
  actionpack (3.0.0) lib/abstract_controller/callbacks.rb:17:in `process_action'
  actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  activesupport (3.0.0) lib/active_support/notifications.rb:52:in `instrument'
  activesupport (3.0.0) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
  activesupport (3.0.0) lib/active_support/notifications.rb:52:in `instrument'
  actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
  actionpack (3.0.0) lib/action_controller/metal/rescue.rb:17:in `process_action'
  actionpack (3.0.0) lib/abstract_controller/base.rb:119:in `process'
  actionpack (3.0.0) lib/abstract_controller/rendering.rb:40:in `process'
  actionpack (3.0.0) lib/action_controller/metal.rb:133:in `dispatch'
  actionpack (3.0.0) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
  actionpack (3.0.0) lib/action_controller/metal.rb:173
  actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:62:in `call'
  actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:62:in `dispatch'
  actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:27:in `call'
  rack-mount (0.6.13) lib/rack/mount/route_set.rb:148:in `call'
  rack-mount (0.6.13) lib/rack/mount/code_generation.rb:93:in `recognize'
  rack-mount (0.6.13) lib/rack/mount/code_generation.rb:82:in `optimized_each'
  rack-mount (0.6.13) lib/rack/mount/code_generation.rb:92:in `recognize'
  rack-mount (0.6.13) lib/rack/mount/route_set.rb:139:in `call'
  actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:492:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/head.rb:14:in `call'
  rack (1.2.1) lib/rack/methodoverride.rb:24:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/flash.rb:182:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/session/abstract_store.rb:149:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/cookies.rb:287:in `call'
  activerecord (3.0.0) lib/active_record/query_cache.rb:32:in `call'
  activerecord (3.0.0) lib/active_record/connection_adapters/abstract/query_cache.rb:28:in `cache'
  activerecord (3.0.0) lib/active_record/query_cache.rb:12:in `cache'
  activerecord (3.0.0) lib/active_record/query_cache.rb:31:in `call'
  activerecord (3.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/callbacks.rb:46:in `call'
  activesupport (3.0.0) lib/active_support/callbacks.rb:415:in `_run_call_callbacks'
  actionpack (3.0.0) lib/action_dispatch/middleware/callbacks.rb:44:in `call'
  rack (1.2.1) lib/rack/sendfile.rb:107:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/remote_ip.rb:48:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/show_exceptions.rb:46:in `call'
  railties (3.0.0) lib/rails/rack/logger.rb:13:in `call'
  rack (1.2.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.0.0) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.2.1) lib/rack/lock.rb:11:in `call'
  rack (1.2.1) lib/rack/lock.rb:11:in `synchronize'
  rack (1.2.1) lib/rack/lock.rb:11:in `call'
  actionpack (3.0.0) lib/action_dispatch/middleware/static.rb:30:in `call'
  railties (3.0.0) lib/rails/application.rb:168:in `call'
  railties (3.0.0) lib/rails/application.rb:77:in `send'
  railties (3.0.0) lib/rails/application.rb:77:in `method_missing'
  railties (3.0.0) lib/rails/rack/log_tailer.rb:14:in `call'
  rack (1.2.1) lib/rack/content_length.rb:13:in `call'
  rack (1.2.1) lib/rack/handler/webrick.rb:52:in `service'
  c:/Ruby187/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
  c:/Ruby187/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:162:in `start'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:95:in `start'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:92:in `each'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:92:in `start'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:23:in `start'
  c:/Ruby187/lib/ruby/1.8/webrick/server.rb:82:in `start'
  rack (1.2.1) lib/rack/handler/webrick.rb:13:in `run'
  rack (1.2.1) lib/rack/server.rb:213:in `start'
  railties (3.0.0) lib/rails/commands/server.rb:65:in `start'
  railties (3.0.0) lib/rails/commands.rb:30
  railties (3.0.0) lib/rails/commands.rb:27:in `tap'
  railties (3.0.0) lib/rails/commands.rb:27
  script/rails:6:in `require'
  script/rails:6
  Request
  
  Parameters:
  
  {"id"=&gt;"1"}
  Show session dump
  
  Show env dump
  
  Response
  
  Headers:
  
  None
  </code></pre>
  
  <hr>
  
  <p>I've tried to find someone with similar issues, but to no avail.</p>
  
  <p>I've recopied the whole code for this chapter form the tutorial to make sure it wasn't a typo, still didn't helped.</p>
  
  <p>Thanks for any help given.</p>