Pastable version of ActiveRecord Validations with a lot of conditions

<pre class='prettyprint' language='ruby'>in models/user.rb
...

validates_presence_of     :email,                      :if =&gt; :email_validations_required?
  validates_presence_of     :password,                   :if =&gt; :password_validations_required?
  validates_presence_of     :password_confirmation,      :if =&gt; :password_validations_required?
  validates_length_of       :password, :within =&gt; 4..40, :if =&gt; :password_validations_required?
  validates_confirmation_of :password,                   :if =&gt; :password_validations_required?
  validates_length_of       :nick,    :maximum =&gt; 40,    :if =&gt; :nick_validations_required?
  validates_length_of       :email,    :within =&gt; 3..100,:if =&gt; :email_validations_required?
  validates_format_of       :email, :with =&gt; /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i, 
    :on =&gt; :create, :message =&gt; &quot;doesn't seem to be valid.&quot;,
                                                         :if =&gt; :email_validations_required?
  validates_format_of       :nick, :with =&gt; /\A[^@]+\Z/i,:if =&gt; :nick_validations_required?,
    :message =&gt; &quot;can't have a @ in it.  (Sorry, 1337 |-|@&gt;&lt;0R5!)&quot;

validates_uniqueness_of   :login,                      :if =&gt; :nick_validations_required?
  validates_uniqueness_of   :email, :case_sensitive =&gt; false, :if =&gt; :email_validations_required?
...

def password_validations_required?
    (crypted_password.blank? &amp;&amp; !using_openid?) || !password.blank?
  end

def email_validations_required?
    !email.blank? || !using_openid?
  end
  
  def nick_validations_required?
    !nick.blank?
  end</pre>
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Pastable version of ActiveRecord Validations with a lot of conditions