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Ruby

Tim Smith
Tim Smith
11,164 Points
Posted by Tim Smith
Tim Smith
11,164 Points

nil:NilClass (ruby 4.0.0)

Hi Everyone,

I have a problem in my Treebook Ruby on Rails (4.0.0) app that I can't seem to figure out. I am at the part of the app development where they are introducing Simple form and connecting user_id with the user's name:

Programming > Build a Simple Ruby on Rails Application > Customizing Forms > Creating Relationships

Everything works in my app the way it does in the tutorial except for the user_id itself. When I use the simple form to enter the user_id for a status, it is not saved when I save the status. I end up getting the error:

undefined method `first_name' for nil:NilClass

when I try to use <%= status.user.first_name %>.

I am not able to proceed with the course until this bug is resolved.

Hope this is a good enough description.

Thanks,

Tim Smith

3 Answers

Tim Smith
Tim Smith
11,164 Points
Tim Smith
Tim Smith
11,164 Points

FIXED!!

I added :user_id to

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

in statuses_controller.rb.

Rails 4 handles things differently

Hillie Kootstra
Hillie Kootstra
3,136 Points
Hillie Kootstra
Hillie Kootstra
3,136 Points

Hey Tim,

I tried this but it didn't work for me. Do i need to do anything else? Do a migration or something?

Tim Smith
Tim Smith
11,164 Points
Tim Smith
Tim Smith
11,164 Points

After doing:

rails c Status.first

I get:

Status Load (0.1ms) SELECT "statuses".* FROM "statuses" ORDER BY "statuses"."id" ASC LIMIT 1 => #<Status id: 1, content: "Test", created_at: "2013-10-17 01:59:05", updated_at: "2013-10-17 01:59:05", user_id: nil>

It seems like my migrations are not running because I do not see a "user_id" column

Lisa Rossiter
Lisa Rossiter
3,630 Points
Lisa Rossiter
Lisa Rossiter
3,630 Points

Hi Tim,

I know this is random but did you have to add permitted values for devise as well.

I also assume you have finished this tutorial now is there any problems you came across whilst doing this tutorial with rails 4.