Is there a way to add a dynamic URL token to images so that the move from local host to live doesn't require code change?
Handling of the links in the field having a WYSIWYG editor, or any other long text field is a common issue when the site moves from one server (say dev) to other (say stage or production).
The links should be saved in such a way that they do not break.  

Pathologic module does that for you.


  Pathologic is an input filter which can correct paths in links and images in your Drupal content in situations which would otherwise cause them to “break;” for example, if the URL of the site changes, or the content was moved to a different server. Pathologic can also solve the problem of missing images and broken links in your site’s RSS feeds. See more example use cases on the documentation page.