Class: EmailFormatValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
app/validators/email_format_validator.rb

Overview

Validate fields to look like emails

Is not an exhaustive check but prevents emails that can cause Postfix to crash. Specifically emails with special characters in the local part.

A blank email is considered valid (use presence validator to check for that)

Examples

validates :email, email_format: true                 # optional
validates :email, email_format: true, presence: true # required

Constant Summary collapse

EMAIL_REGEX =

Local part is basically a-z 0-9 and common symbols en.wikipedia.org/wiki/E-mail_address#Local_part

Domain part is basically any unicode character while the TLD is still restricted to at least two characters in range of a-z

/\A(([a-zA-Z0-9+_!#$%&'*+~=\/\{\}\|\`\^\?\-\.]+)@((?:[^(),:;<>@\[\\\]\s\.]+\.)+[a-z]{2,}))?\z/i

Instance Method Summary collapse

Instance Method Details

#validate_each(record, attr_name, value) ⇒ Object 



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# File 'app/validators/email_format_validator.rb', line 19

def validate_each(record, attr_name, value)
  return if value.blank?
  record.errors.add(attr_name, :email_format, options) unless value =~ EMAIL_REGEX
end