diff options
Diffstat (limited to 'activemodel/lib/active_model/secure_password.rb')
| -rw-r--r-- | activemodel/lib/active_model/secure_password.rb | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/activemodel/lib/active_model/secure_password.rb b/activemodel/lib/active_model/secure_password.rb index 4033eb5808..fdfd8cb147 100644 --- a/activemodel/lib/active_model/secure_password.rb +++ b/activemodel/lib/active_model/secure_password.rb @@ -2,6 +2,11 @@ module ActiveModel module SecurePassword extend ActiveSupport::Concern + # BCrypt hash function can handle maximum 72 characters, and if we pass + # password of length more than 72 characters it ignores extra characters. + # Hence need to put a restriction on password length. + MAX_PASSWORD_LENGTH_ALLOWED = 72 + class << self attr_accessor :min_cost # :nodoc: end @@ -11,16 +16,20 @@ module ActiveModel # Adds methods to set and authenticate against a BCrypt password. # This mechanism requires you to have a +password_digest+ attribute. # - # Validations for presence of password on create, confirmation of password - # (using a +password_confirmation+ attribute) are automatically added. If - # you wish to turn off validations, pass <tt>validations: false</tt> as an - # argument. You can add more validations by hand if need be. + # The following validations are added automatically: + # * Password must be present on creation + # * Password length should be less than or equal to 72 characters + # * Confirmation of password (using a +password_confirmation+ attribute) + # + # If password confirmation validation is not needed, simply leave out the + # value for +password_confirmation+ (i.e. don't provide a form field for + # it). When this attribute has a +nil+ value, the validation will not be + # triggered. # - # If you don't need the confirmation validation, just don't set any - # value to the password_confirmation attribute and the validation - # will not be triggered. + # For further customizability, it is possible to supress the default + # validations by passing <tt>validations: false</tt> as an argument. # - # You need to add bcrypt (~> 3.1.7) to Gemfile to use #has_secure_password: + # Add bcrypt (~> 3.1.7) to Gemfile to use #has_secure_password: # # gem 'bcrypt', '~> 3.1.7' # @@ -63,6 +72,7 @@ module ActiveModel record.errors.add(:password, :blank) unless record.password_digest.present? end + validates_length_of :password, maximum: ActiveModel::SecurePassword::MAX_PASSWORD_LENGTH_ALLOWED validates_confirmation_of :password, if: ->{ password.present? } end |