title: Laravel ignore validation while updating record
body: <p>Validation for my model looks like:</p>
  
  <pre><code>public static $rules = array(
      'email' =&gt; 'required',
      'password' =&gt; 'required'
  );
  </code></pre>
  
  <p>How can i tell laravel not to check the validation for "password" field if user is going to update the record and also i want to retain the previous password in the database until user fills the password again from the edit form?</p>