title: How do I write a custom validation method with parameters for my ActiveRecord model?
body: <p>In my model I have:</p>
  
  <pre><code>validate :my_custom_validation
  
  def my_custom_validation
   errors.add_to_base("error message") if condition.exists?
  end
  </code></pre>
  
  <p>I would like to add some parameters to mycustomer vaildation like so:</p>
  
  <pre><code>validate :my_custom_validation, :parameter1 =&gt; x, :parameter2 =&gt; y
  </code></pre>
  
  <p>How do I write the mycustomvalidation function to account for parameters? </p>