Views: if fieldvalue (external link) is set, use it, if not, link to node For my articles, i've added a field "external_link". If this link is set, the headline should link to an external website, and if not, the headline should open the articles detailview.

Now i have the fields of my view two fields, which are excluded from the display, the external_link, and the nid. And on the headlinefield, i can do a 

"rewrite results -> output this field as a link" 
and write either node/[nid] or [external_link], 

but how to use conditions in views, to use the external_link if set, and the node/[nid] if not set? I'm new to Drupal and i have no idea how or where to add this condition...
There is no direct way of using conditionals inside of Views.  However, you might be able to fake it out with something like this:


Order the fields in your view in nid, external link, title order.
In your external link field, set empty field behavior to node/[nid]
Always use it as the link in the last rewrite.


In my just woke up and enjoying espresso before getting to some real work state of mind, this should do what you are asking for, eg, linking to node/nid if there is no external link, but using it if it exists.