99 lines
3.0 KiB
Ruby
99 lines
3.0 KiB
Ruby
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require 'digest/sha1'
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class User < ActiveRecord::Base
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# Virtual attribute for the unencrypted password
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attr_accessor :password
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validates_presence_of :login, :email
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validates_presence_of :password, :if => :password_required?
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validates_presence_of :password_confirmation, :if => :password_required?
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validates_length_of :password, :within => 4..40, :if => :password_required?
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validates_confirmation_of :password, :if => :password_required?
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validates_length_of :login, :within => 3..40
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validates_length_of :email, :within => 3..100
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validates_uniqueness_of :login, :email, :case_sensitive => false
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before_save :encrypt_password
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before_create :make_activation_code
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# prevents a user from submitting a crafted form that bypasses activation
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# anything else you want your user to change should be added here.
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attr_accessible :login, :email, :password, :password_confirmation
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# Activates the user in the database.
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def activate
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@activated = true
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self.activated_at = Time.now.utc
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self.activation_code = nil
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save(false)
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end
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def activated?
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# the existence of an activation code means they have not activated yet
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activation_code.nil?
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end
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# Returns true if the user has just been activated.
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def recently_activated?
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@activated
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end
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# Authenticates a user by their login name and unencrypted password. Returns the user or nil.
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def self.authenticate(login, password)
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u = find :first, :conditions => ['login = ? and activated_at IS NOT NULL', login] # need to get the salt
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u && u.authenticated?(password) ? u : nil
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end
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# Encrypts some data with the salt.
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def self.encrypt(password, salt)
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Digest::SHA1.hexdigest("--#{salt}--#{password}--")
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end
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# Encrypts the password with the user salt
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def encrypt(password)
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self.class.encrypt(password, salt)
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end
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def authenticated?(password)
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crypted_password == encrypt(password)
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end
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def remember_token?
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remember_token_expires_at && Time.now.utc < remember_token_expires_at
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end
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# These create and unset the fields required for remembering users between browser closes
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def remember_me
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remember_me_for 2.weeks
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end
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def remember_me_for(time)
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remember_me_until time.from_now.utc
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end
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def remember_me_until(time)
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self.remember_token_expires_at = time
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self.remember_token = encrypt("#{email}--#{remember_token_expires_at}")
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save(false)
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end
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def forget_me
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self.remember_token_expires_at = nil
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self.remember_token = nil
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save(false)
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end
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protected
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# before filter
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def encrypt_password
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return if password.blank?
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self.salt = Digest::SHA1.hexdigest("--#{Time.now.to_s}--#{login}--") if new_record?
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self.crypted_password = encrypt(password)
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end
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def password_required?
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crypted_password.blank? || !password.blank?
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end
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def make_activation_code
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self.activation_code = Digest::SHA1.hexdigest( Time.now.to_s.split(//).sort_by {rand}.join )
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end
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end
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