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Ruby ActiveRecord Basics Validation Errors 2

Shawn Wilson
seal-mask
.a{fill-rule:evenodd;}techdegree
Shawn Wilson
iOS Development Techdegree Student 7,049 Points
Posted by Shawn Wilson
.a{fill-rule:evenodd;}techdegree
Shawn Wilson
iOS Development Techdegree Student 7,049 Points

Build a custom validator that ensures that no Contact’s last_name is Evil. issue with challenge

hey all im jacked up on a code challenge here and ive tried a few variations with no avail.. this is my code so far.. 

class Contact < ActiveRecord::Base
   validates :last_name, presence: true
                         uniqueness: true

   validate :name_has_no_evil

   def name_has_no_evil
     if @last_name.include?("Evil")
       errors.add(:last_name, "Can not be Evil")
     end
   end
 end

im not sure what else to try im sure this is something simple that im overlooking bur i've watched the video a few times and still cant pick up on it..

thanks in advance.

2 Answers

Shawn Wilson
seal-mask
.a{fill-rule:evenodd;}techdegree
Shawn Wilson
iOS Development Techdegree Student 7,049 Points
Shawn Wilson
.a{fill-rule:evenodd;}techdegree
Shawn Wilson
iOS Development Techdegree Student 7,049 Points

well i removed the @ but to no avail and the error treehouse send out is not helpful at all... just says bummer try again..

Myers Carpenter
Myers Carpenter
6,421 Points

The validates :last_name, presence: true, uniqueness: true would be useful in a real app, but seems to screw up this code challenge. Try it without that.

I agree the error messages isn't very helpful. Thanks for pointing that out. We'll look into improving that.

Myers Carpenter
Myers Carpenter
6,421 Points
Myers Carpenter
Myers Carpenter
6,421 Points

In an ActiveRecord class you don't put @ in front of attributes like last_name.

1,205 Points

Yes, you have to watch carefully to ignore the various permutations of incorrect answers the instructor goes through before arriving at a working example. (Initially, the instructor uses @ in the custom validator.) Unfortunately these are not edited out of the videos.