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class LocalEmail < Email
validate :unique_on_server
validate :unique_alias_for_user
validate :differs_from_main_email
validates :casted_by, :presence => true
def to_partial_path
"emails/email"
end
def unique_on_server
has_email = User.find_by_email_or_alias(email)
if has_email && has_email != self.base_doc
errors.add :email, "has already been taken"
end
end
def unique_alias_for_user
aliases = self.casted_by.email_aliases
if aliases.select{|a|a.email == self.email}.count > 1
errors.add :email, "is already your alias"
end
end
def differs_from_main_email
user = self.casted_by
if user.email == self.email
errors.add :email, "may not be the same as your email address"
end
end
end
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