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Diffstat (limited to 'activemodel/lib/active_model/secure_password.rb')
-rw-r--r-- | activemodel/lib/active_model/secure_password.rb | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/secure_password.rb b/activemodel/lib/active_model/secure_password.rb new file mode 100644 index 0000000000..7e8370a04c --- /dev/null +++ b/activemodel/lib/active_model/secure_password.rb @@ -0,0 +1,62 @@ +require 'bcrypt' + +module ActiveModel + module SecurePassword + extend ActiveSupport::Concern + + module ClassMethods + # 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, confirmation of password (using + # a "password_confirmation" attribute) are automatically added. + # You can add more validations by hand if need be. + # + # Example using Active Record (which automatically includes ActiveModel::SecurePassword): + # + # # Schema: User(name:string, password_digest:string) + # class User < ActiveRecord::Base + # has_secure_password + # end + # + # user = User.new(:name => "david", :password => "", :password_confirmation => "nomatch") + # user.save # => false, password required + # user.password = "mUc3m00RsqyRe" + # user.save # => false, confirmation doesn't match + # user.password_confirmation = "mUc3m00RsqyRe" + # user.save # => true + # user.authenticate("notright") # => false + # user.authenticate("mUc3m00RsqyRe") # => user + # User.find_by_name("david").try(:authenticate, "notright") # => nil + # User.find_by_name("david").try(:authenticate, "mUc3m00RsqyRe") # => user + def has_secure_password + attr_reader :password + attr_accessor :password_confirmation + + attr_protected(:password_digest) if respond_to?(:attr_protected) + + validates_confirmation_of :password + validates_presence_of :password_digest + + include InstanceMethodsOnActivation + end + end + + module InstanceMethodsOnActivation + # Returns self if the password is correct, otherwise false. + def authenticate(unencrypted_password) + if BCrypt::Password.new(password_digest) == unencrypted_password + self + else + false + end + end + + # Encrypts the password into the password_digest attribute. + def password=(unencrypted_password) + @password = unencrypted_password + self.password_digest = BCrypt::Password.create(unencrypted_password) + end + end + end +end |