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Permit dots in usernames with conditions (#6844)

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* Permit dots in usernames with conditions

- Dot cannot be the start or end of username
- a.lice and al.ice are considered the same during sign-up

* Fix regex mixin flags
This commit is contained in:
Eugen Rochko 2018-03-21 10:26:53 +01:00 committed by GitHub
parent a6b59cd1a3
commit 93897134ca
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2 changed files with 18 additions and 2 deletions
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6
app/models/account.rb
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@ -47,7 +47,8 @@
#
class Account < ApplicationRecord
MENTION_RE = /(?<=^|[^\/[:word:]])@(([a-z0-9_]+)(?:@[a-z0-9\.\-]+[a-z0-9]+)?)/i
USERNAME_RE = /[a-z0-9_]+([a-z0-9_\.]+[a-z0-9_]+)?/i
MENTION_RE = /(?<=^|[^\/[:word:]])@((#{USERNAME_RE}?)(?:@[a-z0-9\.\-]+[a-z0-9]+)?)/i
include AccountAvatar
include AccountFinderConcern
@ -68,7 +69,8 @@ class Account < ApplicationRecord
validates :username, uniqueness: { scope: :domain, case_sensitive: true }, if: -> { !local? && will_save_change_to_username? }
# Local user validations
validates :username, format: { with: /\A[a-z0-9_]+\z/i }, uniqueness: { scope: :domain, case_sensitive: false }, length: { maximum: 30 }, if: -> { local? && will_save_change_to_username? }
validates :username, format: { with: /\A#{USERNAME_RE}\z/i }, length: { maximum: 30 }, if: -> { local? && will_save_change_to_username? }
validates_with UniqueUsernameValidator, if: -> { local? && will_save_change_to_username? }
validates_with UnreservedUsernameValidator, if: -> { local? && will_save_change_to_username? }
validates :display_name, length: { maximum: 30 }, if: -> { local? && will_save_change_to_display_name? }
validates :note, length: { maximum: 160 }, if: -> { local? && will_save_change_to_note? }

14
app/validators/unique_username_validator.rb Normal file
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@ -0,0 +1,14 @@
# frozen_string_literal: true
class UniqueUsernameValidator < ActiveModel::Validator
def validate(account)
return if account.username.nil?
normalized_username = account.username.downcase.delete('.')
scope = Account.where(domain: nil, username: normalized_username)
scope = scope.where.not(id: account.id) if account.persisted?
account.errors.add(:username, :taken) if scope.exists?
end
end