title: How to bind the storage blob name dynamically from a particular field inside trigger queue message
body: <p>I am trying to do some logging for a triggered message(queue), so that if a message fails and it gets picked up by the webjob next time I would have logged some information so that I wouldn't redo the success paths(like sending messages to clients after stage1).
  So I plan on using the azure blob storage binding to configure as input and output streams. But in order to do it i need a unique name for the blob. I have a guid inside the message and i plan on using that guid to read/write from the blob storage.
  How do i configure this blob storage name binding dynamically from a guid field inside the queue message. (My message is very big and i don't want to use the entire message as a blob storage name).</p>
  
  <pre><code>public static void ProcessQueueMessage([QueueTrigger("%testQueue%")],
  TestMessageModel testMessage,
  [Blob("testStorage/{queueTrigger}", FileAccess.ReadWrite)] Stream logstream)
  {
  
  }
  </code></pre>
  
  <p>As you can see, the official documentation only uses queueTrigger that uses the string inside the message as the blob name. But my message looks big like this</p>
  
  <pre><code>public class TestMessageModel
  {
    public Guid Id {get; set;}
    public int FromOrg {get; set;}
    public DateTime BatchDate {get; set;}
    public Payments[] payments {get; set;}  // this array is big (many items)
  }
  </code></pre>
  
  <p>I don't want to use something that ridiculous as a blob name.
  how to use the Id inside the testMessage?</p>