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Ruby

Posted by Ashley Schneider
Ashley Schneider
7,627 Points

Adding Gravatars Code Challenge

The first code challenge asks you to "Add a method to User called gravatar_url. This method should for now simply return the email address, which should be retrieved using the email method on User."

I've tried everything! I have no clue what to put to pass this code challenge. I thought I was on the right track with putting <%= status.user.gravatar_url %> but that was wrong.

6 Answers

Philipp Antar
Philipp Antar
7,216 Points

The challenge takes place in the User model, not in a view. Therefore you won't need these ERB tags: <%= %>. The User model is pure ruby code and it describes the User class. You're asked to add a method to this class and this method should return the email of an instance of the User class. You can achieve this by using the self keyword in the method body:

 class User < ActiveRecord::Base
   def gravatar_url
     self.email
   end
 end

BTW -- Ruby features an implicit return of the last evalued expression, hence there's no need for the return keyword. HTH :)

Marin Gerov
Marin Gerov
28,501 Points
Marin Gerov
Marin Gerov
28,501 Points

Hi guys,

What also works is

class User < ActiveRecord::Base
  def gravatar_url
    email
  end
end
Ashley Schneider
Ashley Schneider
7,627 Points
Ashley Schneider
Ashley Schneider
7,627 Points

thank you so much! this totally helped!

Neill dev
PLUS
Neill dev
Courses Plus Student 23,163 Points
Neill dev
Neill dev
Courses Plus Student 23,163 Points

Yes, thank you Philipp...but can anyone explain why user.email or User.email would not work...self.email (Which I assume is similar to 'this' in JS) was not addressed in the video, therefore I don't think this was the expected answer? Rdgs Neill

Philipp Antar
Philipp Antar
7,216 Points
Philipp Antar
Philipp Antar
7,216 Points

user.email would refer to an object of class User, which has a method called email. User.email refers to a class User having a class-method email. What we want, however, is to provider an instance method for instances of the class User. Read about the differences between class, instances of classes, class methods and instance methods. I'm sure it will quickly make sense.