>From the logs what appears to me is that you don't have any 'title' field in the book database.
Thanks & Regards, Dhruva Sagar. On Thu, Dec 24, 2009 at 12:36 PM, dwhitekiss <[email protected]> wrote: > Hi, > > In a few words, can someone explain to me the NoMethodError. Googling > for answers will get you to something but a direct answer from experts > will give you something. > > NoMethodError in Book#new > > Showing app/views/book/new.html.erb where line #4 raised: > > undefined method `title' for #<Book id: nil, created_at: nil, > updated_at: nil> > > Extracted source (around line #4): > > 1: <h1>Add new book</h1> > 2: <%= form_tag :action => 'create' %> > 3: <p><label for="book_title">Title</label>: > 4: <%= text_field 'book', 'title' %></p> > 5: <p><label for="book_price">Price</label>: > 6: <%= text_field 'book', 'price' %></p> > 7: <p><label for="book_subject">Subject</label>: > > RAILS_ROOT: /home/user/projects/library > Application Trace | Framework Trace | Full Trace > > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > attribute_methods.rb:260:in `method_missing' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/ > form_helper.rb:845:in `send' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/ > form_helper.rb:845:in `value_before_type_cast' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/ > form_helper.rb:833:in `value_before_type_cast' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/ > form_helper.rb:754:in `to_input_field_tag' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/ > form_helper.rb:544:in `text_field' > /home/darwin/projects/library/app/views/book/new.html.erb:4:in > `_run_erb_app47views47book47new46html46erb' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/ > renderable.rb:34:in `send' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/ > renderable.rb:34:in `render' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/base.rb: > 306:in `with_template' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/ > renderable.rb:30:in `render' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/ > template.rb:205:in `render_template' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/base.rb: > 265:in `render' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:1250:in `render_for_file' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:945:in `render_without_benchmark' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > benchmarking.rb:51:in `render' > /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ > core_ext/benchmark.rb:17:in `ms' > /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ > core_ext/benchmark.rb:10:in `realtime' > /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ > core_ext/benchmark.rb:17:in `ms' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > benchmarking.rb:51:in `render' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:1326:in `default_render' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:1332:in `perform_action_without_filters' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > filters.rb:617:in `call_filters' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > filters.rb:610:in `perform_action_without_benchmark' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > benchmarking.rb:68:in `perform_action_without_rescue' > /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ > core_ext/benchmark.rb:17:in `ms' > /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ > core_ext/benchmark.rb:10:in `realtime' > /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ > core_ext/benchmark.rb:17:in `ms' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > benchmarking.rb:68:in `perform_action_without_rescue' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > rescue.rb:160:in `perform_action_without_flash' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > flash.rb:146:in `perform_action' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:532:in `send' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:532:in `process_without_filters' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > filters.rb:606:in `process' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:391:in `process' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > base.rb:386:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > routing/route_set.rb:437:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > dispatcher.rb:87:in `dispatch' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > dispatcher.rb:121:in `_call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > dispatcher.rb:130:in `build_middleware_stack' > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > query_cache.rb:29:in `call' > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > query_cache.rb:29:in `call' > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > connection_adapters/abstract/query_cache.rb:34:in `cache' > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > query_cache.rb:9:in `cache' > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > query_cache.rb:28:in `call' > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/ > connection_adapters/abstract/connection_pool.rb:361:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > string_coercion.rb:25:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb: > 24:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > params_parser.rb:15:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > session/cookie_store.rb:93:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > failsafe.rb:26:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in > `synchronize' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > dispatcher.rb:114:in `call' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > reloader.rb:34:in `run' > /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/ > dispatcher.rb:108:in `call' > /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/rack/static.rb:31:in > `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb:46:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `each' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `call' > /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/rack/log_tailer.rb: > 17:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/content_length.rb: > 13:in `call' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/handler/webrick.rb: > 50:in `service' > /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' > /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run' > /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' > /usr/lib/ruby/1.8/webrick/server.rb:162:in `start' > /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' > /usr/lib/ruby/1.8/webrick/server.rb:95:in `start' > /usr/lib/ruby/1.8/webrick/server.rb:92:in `each' > /usr/lib/ruby/1.8/webrick/server.rb:92:in `start' > /usr/lib/ruby/1.8/webrick/server.rb:23:in `start' > /usr/lib/ruby/1.8/webrick/server.rb:82:in `start' > /usr/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/handler/webrick.rb: > 14:in `run' > /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:111 > /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in > `gem_original_require' > /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in > `require' > script/server:3 > > D > > -- > > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<rubyonrails-talk%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
