WoW:API GetBattlefieldStatus

status, mapName, instanceID = GetBattlefieldStatus(index);

Get status on a battlefield

Value of index appears to be the Battlefield queue index. Changed from null argument to index in 1.9

---

Returns

status, mapName, instanceID

status

String - The player's Battlefield status ('none', 'queued', 'confirm', 'active', 'error')

mapName

String - The queued Battlefield's name ('Alterac Valley', etc.)

instanceID

Integer - The number of the Battlefield instance

 for i=1, MAX_BATTLEFIELD_QUEUES do
   status, mapName, instanceID = GetBattlefieldStatus(i);
   if ( instanceID ~= 0 ) then
       mapName = mapName.." "..instanceID;
   end
   ...