Currently there's no support for views special fields like "Global: Custom text" or "Global: Expression".
Turned out that it's not that difficult, though. The only problem was, that views_json tried to figure out the "raw" value (from database), which doesn't exist for this type of pseudo fields.
Currently there's no support for views special fields like "Global: Custom text" or "Global: Expression".
Turned out that it's not that difficult, though. The only problem was, that views_json tried to figure out the "raw" value (from database), which doesn't exist for this type of pseudo fields.