title: How to validate text isn't blank in Rails
body: <p>if I do </p>
  
  <pre><code>  validates :body, :presence =&gt; true, :length =&gt; {:maximum =&gt; 30000, :message =&gt; ' is a bit long...'}
    validates :body, :length =&gt; {:minimum =&gt; 10, :message =&gt; ' is a bit short...'}
  </code></pre>
  
  <p>I still have a possibility of having a text which includes only <code>spaces</code> and <code>/r</code> or <code>/n</code> - non visible chars, which while the text isn't blank by definition, it is blank by looking at it</p>
  
  <p>How can I validate that the text had a min and max length listed above and is also visible (not 10 spaces) </p>