title: How to get currentBlock in block ajax call without page type reference. [episerver 9]
body: <p>What is the best way to get currentBlock in block ajax call?</p>
  
  <pre><code>[HttpGet]
  public ActionResult GetSomething()
  {
      var currentBlock = Get(); //how?
      return currentBlock.SomeLabel;
  }
  </code></pre>
  
  <p>(I don't know the solution when Block or BlockController do not know about the Page)</p>
  
  <p>I want to make blocks reusable for any page.</p>
  
  <p>Thanks.</p>