Question

I just did a push to Heroku and tried doing some testing by adding a model through rails_admin. When I did that I got a generic error page. I went into the logs and noticed this message:

NoMethodError (undefined method `name’ for nil:NilClass)

I then opened heroku console and tried adding the model manually and received the same message when trying to save.

NoMethodError: undefined method `name’ for nil:NilClass

Here is the model:

class Board < ActiveRecord::Base
  attr_accessible :name, :description

  validates :name, :presence => true
  validates :description, :presence => true
  validates_uniqueness_of :name, :case_sensitive => false

  has_many :subjects
  scope :hidden, where(:is_hidden => true)
  scope :visible, where(:is_hidden => false)
end

Any ideas what might be happening with this – or where to start looking?

I did the migration and was able to see that it recognized the model and it’s attributes when working in the console.

Thanks!

Answer 1

I’m not sure if there is a delay or something with Heroku when pushing changes out and running db:migrate but after spending a few hours out and about, I came back, ran rake db:migrate again, which appeared to do nothing and then I tried creating the model again and it worked without any problems.

So all seems well now, but I can’t tell I just needed to wait longer before testing with Heroku – or whether running the migration again actually did something.