I was wondering if you could create a sub-collection from within flutter to firestore. I've heard you need to add manually add a document or something like that before you can access a sub-collection from flutter, but I wanted to know if there was a work-around.
Something like this-> Firebase.Firestore.instance.collection('groups').doc(groupID).collection('posts').add('')
without having to manually add a document first. Thanks
In Firestore (all client platforms, not just Flutter), both collections and subcollections don't "exist" in the console unless there is at least one document in it. If you want a subcollection to "exist", simply write a document to it.
When the last document is removed from a collection or subcollection, it ceases to "exist" in the console (after you reload it).
Collections are not really an "thing" in firestore. Documents are a thing, and they happen to be organized under collections. Your app should not depend on collections or subcollections existing - it should depends on documents being returned from queries on those collections.
See also:
