How to create subcollections programmatically with React Native Firestore

Question

I am looking to create subcollections with React Native Firebase to create a firestore structure like this:

groups
   ->group
      ->scheduledQuestionnaires
         ->questionnaire (fields: id, type and timestamp)

users
   ->user
      ->groups
         (fields: id and name)

I have created the collections groups and users, but how can I create a subcollection scheduledQuestionnaires for every group programmatically.

I am able to add documents with fields to collections just fine, but I can't seem to find a way to create (sub)collections. Am I going the wrong way about it or am I missing something?

EDIT To add to the answer by monsty. Here is a code snippet of what I wanted to do:

 firestore()
    .collection('groups')
    .doc('group1/scheduledQuestionnaires/questionnaire1')
    .set({
       id: '1',
       type: 'type',
       timestamp: 'timestamp',
    });

monsty monsty · Accepted Answer · 2020-05-07T14:19:58

You don't need to create subcollections for every collection, because Firebase will handle it.

If you try to save a document into "/groups/group/scheduledQuestionnaires/hello/world/my_document", Firebase will create all the sub collections needed (in this case : hello and world).

How to create subcollections programmatically with React Native Firestore

1 Answers