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Ruby

Posted by Mike Carlucci
Mike Carlucci
1,982 Points

Creating Relationships error

I'm getting a NoMethodError in Statuses#index for line #9 raised undefined method '+' for nil:NilClass

6.

  1. <% @statuses.each do |status| %>
  2. <div class="status">
  3. <strong><%= status.user.full_name %></strong>
  4. <p><%= status.content %></p>
  5. <div class="meta">
  6. <%= link_to time_ago_in_words(status.created_at) + " ago", status %>

11 Answers

Robert Cekay
Robert Cekay
12,460 Points
Robert Cekay
Robert Cekay
12,460 Points

you guys need to update this video series, all I know how to do is what you tell me and google is useless

Jason Seifer
STAFF
Jason Seifer
Treehouse Guest Teacher
Jason Seifer
Jason Seifer
Treehouse Guest Teacher

Based on this error, it looks like one of your statuses is missing the created_at attribute. Try launching the console and deleting all of the statuses like Jim does in this video: http://teamtreehouse.com/library/programming-2/build-a-simple-version-of-facebook/customizing-forms/getting-the-latest-changes. Then, create a few more and that should fix it.

Mike Carlucci
Mike Carlucci
1,982 Points
Mike Carlucci
Mike Carlucci
1,982 Points

Excellent. Thanks, that did the trick.

Mike Carlucci
Mike Carlucci
1,982 Points
Mike Carlucci
Mike Carlucci
1,982 Points

Ok. That only fixed the problem until a new status is added.

I reverted back to the start of the Changing Relationships lesson.

I can create a status fine until adding <%= status.user.first_name %> to my index.html.erb file, in between the <strong> tags..

After adding that I get NoMethodError in Status#index line #5 for show.html.erb with line 5 being <%= @status.user.first_name %>

Mike Carlucci
Mike Carlucci
1,982 Points
Mike Carlucci
Mike Carlucci
1,982 Points

Couldn't get it to work no matter what. Redid the project from the start, works perfectly. Must have made a small error somewhere the first time that I just couldn't see, but I'm back on the rails now!

Jon Thomas
Jon Thomas
8,916 Points
Jon Thomas
Jon Thomas
8,916 Points

Yep, that worked for me too. Thanks guys!

Simon Pacheco
Simon Pacheco
1,995 Points
Simon Pacheco
Simon Pacheco
1,995 Points

I am getting an error as well when trying to click create new status. This is the error that I get:

NoMethodError in Statuses#new

Showing /Users/si/treebook/app/views/statuses/_form.html.erb where line #16 raised:

undefined method `name' for #<Status:0x007f8fd58ba800> Extracted source (around line #16):

13: 14: <div class="field"> 15: <%= f.label :name %><br /> 16: <%= f.text_field :name %> 17: </div> 18: <div class="field"> 19: <%= f.label :content %><br />

Jason Seifer
STAFF
Jason Seifer
Treehouse Guest Teacher
Jason Seifer
Jason Seifer
Treehouse Guest Teacher

Hey Simon, try following along with Jim in that video I linked above and let us know if you still have trouble.

Thibaud CLEMENT
Thibaud CLEMENT
96 Points
Thibaud CLEMENT
Thibaud CLEMENT
96 Points

Jason,

I am encountering a problem with the same video, but the situation is quite different:

  • I am able to choose the user_id when I go to http://localhost:3000/statuses/5/edit
  • If I save the edit, go to the show view, and come back, the user_id has actually been saved.
  • When I add <%= @status.user.first_name %> to show.html.erb, save the file and refresh the status page, nothing changes: the page is working (there is no ErrorMethod messages like my fellow students) but the user's name (first name in this case) does not appear.

I tryed to build Treebook once and stumbled upon the very same problem. So, I restarted from the very first video to make sure I had not made any mistake. But I ended up with the exact same problem and feel stuck right now.

Notice: I am using Ruby 2.0 and Rails 4.0 (and therefore had to deal with the fact that attr_accessible was replaced by strong parameters).

Any idea on how I can fix the app to be able to keep on learning?

Jason Seifer
STAFF
Jason Seifer
Treehouse Guest Teacher
Jason Seifer
Jason Seifer
Treehouse Guest Teacher

Thibaud CLEMENT Jesse Neal Are you both using Rails 4? You may need to add the user_id to the list of permitted attributes in the statuses_controller.

Thibaud CLEMENT
Thibaud CLEMENT
96 Points

Hi Jason Seifer,

Thanks for your reply.

Yes, I am using Rails 4.

I had read about the change in Rails 4 about attr_accessible and therefore I had placed the following into my statuses_controller:

''' def status_params params.require(:status).permit( :content, :user_id) end '''

However, this led to the problem described above.

I just saved all my work and pushed it to GitHub if you want to check it: https://github.com/thibaudclement/treebook/commit/5d0ba5cc48bda86afd77cb1e51e0222f83e5c041

What do you think?

Jason Seifer
Jason Seifer
Treehouse Guest Teacher
Jason Seifer
Jason Seifer
Treehouse Guest Teacher

Thibaud CLEMENT you'll need to add a devise controller and update the permitted parameters there. It's not allowing the first name, last name, and profile name when you sign up. Here's an example gist that highlights what you'll have to do.

Thibaud CLEMENT
Thibaud CLEMENT
96 Points

Jason Seifer thank you very much for your help.

Not sure I understood what you meant.

But here is what I have done (which is not working): I created a registrations_controller.rb file with the following code inside:

‘‘‘ class Users::RegistrationsController < Devise::RegistrationsController

before_filter :configure_permitted_parameters

protected

# my custom fields are :first_name, :last_name, :profile_name def configure_permitted_parameters devise_parameter_sanitizer.for(:status) do |u| u.permit(:first_name, :last_name, :profile_name) end end

end ‘‘‘

Does that make sense?

What am I missing?

Thank you.

nofx1717
nofx1717
5,096 Points
nofx1717
nofx1717
5,096 Points

Jason,

I am having this same issue. Everything works fine, I followed the Jim video several times and deleted all the statuses. I can add a new one, but once I add <%= @status.user.full_name %> in index.html, and show.html I get the no method.

What is weird is that the code on github that Jim pushed up has this in show.html.erb:

<p> <b>Name:</b> <%= @status.user.full_name %> </p>

and in index.html.erb it has this:

<strong><%= status.user.full_name %></strong>

I have also tried deleting all statusus, rolling back my db and refreshing that. Still no dice.

As soon as I remove <%= status.user.full_name %>, I can create all the status updates that I want. Any idea how to fix this?