Okay with the new document provider functionality (added in 2.1) this all works pretty nicely for apps that can open iCloud documents. When you open a DTTG document in one of these applications, any changes you make in the editor app automatically update the document in DTTG. It’s pretty sweet.
So far I’ve found two apps:
“File->Open->DEVONthink To Go”
If you don’t see “File” at the top (because you’re in the ia writer document list), choose “New -> New Document”, close the keyboard, and then you’ll see the File menu.
“Open other… -> Locations -> DEVONthink To Go” and choose your document.
The document chooser will use the same sorting strategy as what you’ve got configured in DTTG. It’s basically exactly the same as navigating the database structure in DTTG.
And here’s the big one… you can search your documents! When you’ve selected a database, pull down on the documents list to reveal the search bar and do your search.
From what I can tell, the document provider functionality only goes one way – you have to open the editor app and navigate to the DTTG document. There’s no way to go from DTTG to the app – no selecting the document in DTTG and choosing “open with…” and then the editor app. They all import a new copy into the app rather than opening the document in the app.
I don’t know of a way to preview the document before opening it in the editor… it would be cool if a future update supported force touch to preview before opening.