正则表达式电子邮件：ruby 中的数字 + 电子邮件格式

Question

I have a field email in my database also call emails that should have this format : 123456789@pac.gmail.com where 123456789 should be numbers and a length of 9.

In my model, I tried to format this for my user with the following code :

class Email < ApplicationRecord
    EMAIL_PATTERN = /^[0-9]+/@pac.gmail.com
    LENGTH = 9
    validates :email, presence: true, format: EMAIL_PATTERN, length: LENGTH
end

But with that I have an error unexpected tIVAR, expecting end but I don't get why should I have a END in my code as I don't start any loop or something, Is anyone knows how to format the email in the right way and why I have this kind of error ?

Answer 1

There is no need to separately check the length; you can do that from within your regex. If I'm understanding correctly, you want to make sure there are 9 digits followed by @pac.gmail.com . You can do it like this:

class Email < ApplicationRecord
  EMAIL_PATTERN = /\A[0-9]{9}@pac.gmail.com\z/
  validates :email, presence: true, format: EMAIL_PATTERN
end