NoMethodError in Statuses#show

Question

I've been stuck on this for a few hours now and I've gone through similar forum posts on this topic but nothing I seem to try works.

My code is fine, I got so frustrated by this error that I downloaded the project files and copied them over to make sure I didn't miss anything.

Here's the Github https://github.com/leehughes/treehouse

The error I'm getting is

undefined method `full_name' for nil:NilClass

This is on line 5:

2: 
3: <p>
4:   <b>Name:</b>
5:   <%= @status.user.full_name %>
6: </p>
7: 
8: <p>

I know the error is coming up because there's no relationship between user and full name.

I've tried deleting all pervious users by doing a

rake db:reset

But I'm totally confused on why I'm still getting the error given that the code, rails versions are both correct.

Any advice?

Answer 1 · 2014-05-07T01:01:51Z

May 7, 2014 1:01am

Alrighty. The problem is that you don't have a user with id = 1, but when you created a status, that is what was saved (Notice when we called Status.last previously the user_id was 1). My suggestion is to delete all statuses, delete all users, and recreate a couple users and try again.

Answer 2 · 2014-05-07T01:11:01Z

May 7, 2014 1:11am

Awesome!!

I ran

Status.delete_all

then

User.delete_all

Restarted my server, no more errors!

I can't thank you enough, I spent all morning trying to figure that out!

Answer 3 · 2014-05-07T01:15:21Z

May 7, 2014 1:15am

Yeah. what happens is that you created a bunch of statuses, then you ran a migration to add the user_id column. Thus those old statuses didn't have the user_id. Sometime it's best to just get a clean start on the database as you learn.

Definitely play with the rails console. It will become your best friend to access the database.

Answer 4 · 2014-05-06T22:42:22Z

May 6, 2014 10:42pm

@status.user is not making it into the database. If you are using rails 4, it's because you need to allow user_id using strong_parameters in your statuses controller. Search the forums, this topic has come up many times.

Answer 5 · 2014-05-06T22:44:20Z

May 6, 2014 10:44pm

I'm using rails 3.2.14.

I've also researched the forum and tried various suggestions but still struggling to fix the error.

Answer 6 · 2014-05-07T00:18:25Z

May 7, 2014 12:18am

What's in your statuses controller? Particularly the create action? Also, paste your status.rb model here.

Answer 7 · 2014-05-07T00:21:12Z

May 7, 2014 12:21am

This is the current version:

https://github.com/leehughes/treehouse/blob/master/app/controllers/statuses_controller.rb

status.rb

class Status < ActiveRecord::Base
attr_accessible :content, :user_id
belongs_to :user

end

Answer 8 · 2014-05-07T00:42:35Z

May 7, 2014 12:42am

In your _form.html.erb file, you have a typo:

 <%= f.input :user_id, colection: User.all, label_method: :full_name %>

Collection is spelled wrong.

Could you create a status and then go to rails console and type Status.last and paste the output here so we can see how it's being entered into your database.

Answer 9 · 2014-05-07T00:44:57Z

May 7, 2014 12:44am

Thanks for that, I didn't notice that.

Here's the output:

 Status Load (0.1ms)  SELECT "statuses".* FROM "statuses" ORDER BY "statuses"."id" DESC LIMIT 1
 => #<Status id: 2, content: "hello", created_at: "2014-05-06 22:29:06", updated_at: "2014-05-06 22:29:06", user_id: 1>

Answer 10 · 2014-05-07T00:50:40Z

May 7, 2014 12:50am

Yup, I can't access the following pages:

0.0.0.0:3000/statuses

Extracted source (around line #9): in the file app/views/statuses/index.html.erb

6: 
7: <% @statuses.each do |status| %>
8: <div class="status">
9: <strong><%= status.user.full_name %></strong>
10:<p><%= status.content %></p>
11:<div class="meta">
12: <%= link_to time_ago_in_words(status.created_at) + " ago", status %>

I can access 0.0.0.0:3000/statuses/new and create a new status

When I do that I get another another error

0.0.0.0:3000/statuses/4

Extracted source (around line #5): app/views/statuses/show.html.erb

Answer 11 · 2014-05-07T00:53:44Z

May 7, 2014 12:53am

Ok, time for some more rails console. I think the error is in your user maybe. Go to the console and type

User.find(1)

Paste that output here.

While you are at it, play in the rails console. Let's see if this works:

S = Status.find(2)
S.user
S.user.first_name
S.user.last_name
S.user.full_name

Answer 12 · 2014-05-07T00:57:42Z

May 7, 2014 12:57am

for User.find(1)

User Load (2.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 1]]
ActiveRecord::RecordNotFound: Couldn't find User with id=1
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/activerecord-3.2.14/lib/active_record/relation/finder_methods.rb:344:in `find_one'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/activerecord-3.2.14/lib/active_record/relation/finder_methods.rb:315:in         `find_with_ids'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/activerecord-3.2.14/lib/active_record/relation/finder_methods.rb:107:in `find'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/activerecord-3.2.14/lib/active_record/querying.rb:5:in `find'
from (irb):1
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:47:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:8:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

I'm getting similar errors for

S.user.first_name

NoMethodError: undefined method `first_name' for nil:NilClass
from (irb):4
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:47:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:8:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

S.user_last_name

NoMethodError: undefined method `last_name' for nil:NilClass
from (irb):5
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:47:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:8:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

S.user_full_name

NoMethodError: undefined method `full_name' for nil:NilClass
from (irb):6
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:47:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands/console.rb:8:in `start'
from /usr/local/rvm/gems/ruby-2.0.0-p247@gemset/gems/railties-3.2.14/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

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Lee Hughes

Lee Hughes

NoMethodError in Statuses#show

12 Answers

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes

Brandon Barrette

Brandon Barrette

Brandon Barrette

Brandon Barrette

Lee Hughes

Lee Hughes