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E Kanna
2,944 PointsSimple Ruby on Rails Basic Application Problem - No clue!
Hi, I'm a complete Ruby newbie and I've been going through the "Build a Simple Ruby on Rails Application" but I seem to have gotten myself completely stuck.. I just finished "Creating Relationships" but now I cannot see the site I've been building when I go to my console and type in http://0.0.0.0:3000/statuses/
This is what I see when I type in "rails server" to the terminal.
=> Booting WEBrick
=> Rails 4.1.4 application starting in development on http://0.0.0.0:3000
=> Run rails server -h for more startup options
=> Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
=> Ctrl-C to shutdown server
Exiting
/Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in load': /Users/randallkanna/Documents/ruby_projects/demo_app/app/models/user.rb:10: syntax error, unexpected tIDENTIFIER, expecting keyword_end (SyntaxError)
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:inblock in load_file'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in new_constants_in'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:inload_file'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in require_or_load'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:inload_missing_constant'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in const_missing'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:inconst_get'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in block in constantize'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:ineach'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in inject'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:inconstantize'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:552:in get'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:583:inconstantize'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:297:in get'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:77:into'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:72:in modules'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:89:inroutes'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:156:in default_used_route'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:66:ininitialize'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:331:in new'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:331:inadd_mapping'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:221:in block in devise_for'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:ineach'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in devise_for'
from /Users/randallkanna/Documents/ruby_projects/demo_app/config/routes.rb:2:inblock in <top (required)>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in instance_exec'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:ineval_block'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in draw'
from /Users/randallkanna/Documents/ruby_projects/demo_app/config/routes.rb:1:in<top (required)>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in load'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:inblock in load'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in load_dependency'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:inload'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in block in load_paths'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:ineach'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in load_paths'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:inreload!'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in block in updater'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:incall'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in execute'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:inupdater'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in execute_if_updated'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:inblock in <module:Finisher>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:30:in instance_exec'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:30:inrun'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:55:in block in run_initializers'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:226:inblock in tsort_each'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:348:in block (2 levels) in each_strongly_connected_component'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:427:ineach_strongly_connected_component_from'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:347:in block in each_strongly_connected_component'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:ineach'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in call'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:ineach_strongly_connected_component'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:224:in tsort_each'
from /Users/randallkanna/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:205:intsort_each'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:54:in run_initializers'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application.rb:300:ininitialize!'
from /Users/randallkanna/Documents/ruby_projects/demo_app/config/environment.rb:5:in <top (required)>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:inrequire'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in block in require'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:inload_dependency'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in require'
from /Users/randallkanna/Documents/ruby_projects/demo_app/config.ru:3:inblock in <main>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:in instance_eval'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:ininitialize'
from /Users/randallkanna/Documents/ruby_projects/demo_app/config.ru:in new'
from /Users/randallkanna/Documents/ruby_projects/demo_app/config.ru:in<main>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49:in eval'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49:innew_from_string'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:40:in parse_file'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:277:inbuild_app_and_options_from_config'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:199:in app'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/server.rb:50:inapp'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:314:in wrapped_app'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/server.rb:130:inlog_to_stdout'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/server.rb:67:in start'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:81:inblock in server'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:76:in tap'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:76:inserver'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:40:in run_command!'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands.rb:17:in<top (required)>'
from /Users/randallkanna/Documents/ruby_projects/demo_app/bin/rails:8:in require'
from /Users/randallkanna/Documents/ruby_projects/demo_app/bin/rails:8:in<top (required)>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in load'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/rails.rb:27:incall'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client/command.rb:7:in call'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/client.rb:26:inrun'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/bin/spring:48:in <top (required)>'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:inload'
from /Users/randallkanna/.rvm/gems/ruby-2.1.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in <top (required)>'
from /Users/randallkanna/Documents/ruby_projects/demo_app/bin/spring:16:inrequire'
from /Users/randallkanna/Documents/ruby_projects/demo_app/bin/spring:16:in <top (required)>'
from bin/rails:3:inload'
from bin/rails:3:in `<main>'
Additionally, this is the code that seemed to start the problem as far as I could tell.
# this is in my user.rb file
class User < ActiveRecord::Base
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
attr_accessible :email, :password, :password_confirmation, :remember_me, :first_name, :last_name, :profile_name
has_many :statuses
def full_name
first_name + " " last_name
end
end
Additionally, this is the code in my index file.
<div class="page-header">
<h1> Statuses </h1>
</div>
<%= link_to "Post a New Status", new_status_path, class: "btn btn-info" %>
<% @statuses.each do |status| %>
<div class="status">
<strong> <%= status.user.full_name %> </strong>
<p><%= status.content %></p>
<div class="meta">
<%= link_to time_ago_in_words(status.created_at) + " ago" , status %>
<span class="admin">
<%= link_to "Show", status %>
| <%= link_to "Edit", edit_status_path(status) %> |
<%= link_to "Delete", status, method: :delete, data: {confirm: "Are you sure you want to delete this status?"} %>
</span>
</div>
</div>
<% end %>
```
Any help is much appreciated!
4 Answers
Maciej Czuchnowski
36,441 PointsYeah, this app will not work if you're using Rails 4.1.4. Your forms won't send info to the database, so you will deal with nil:NilClass a lot. Please refer to my answer here:
https://teamtreehouse.com/forum/hello-i-get-stuck-at-this-point
and then here:
https://teamtreehouse.com/forum/validates-firstname-presence-true-not-working
E Kanna
2,944 PointsFixed my own problem by running all of these commands..
rake db:reset Status.delete_all User.delete_all
E Kanna
2,944 PointsAlright, seemed to have fix that issue as far as I can tell.. But now this is coming up instead and I can't seem to see the 3000 site thing at all....
NoMethodError in Statuses#index Showing /Users/randallkanna/Documents/ruby_projects/demo_app/app/views/statuses/index.html.erb where line #10 raised:
undefined method `full_name' for nil:NilClass Extracted source (around line #10): 7 8 9 10 11 12 13
<% @statuses.each do |status| %>
<div class="status">
<strong> <%= status.user.full_name %> </strong>
<p><%= status.content %></p>
<div class="meta">
<%= link_to time_ago_in_words(status.created_at) + " ago" , status %>
Jason Cardenas
3,210 Pointsdef full_name first_name + " " last_name end
missing the "+" after the " "
BTW I am also having the issue on Rails 4.1.4 Im getting full_name as nill class
E Kanna
2,944 PointsE Kanna
2,944 PointsThank you! I was trying to convert but I think I'll just switch to the other version of Rails. Thanks again!