Firestore Query Properties with special characters

问题

I've a collection with contacts with a structure like:

name: 'XPTO' emails: { susan@xpto.com: 'Susan', fred@xpto.com: 'Fred' }

But the query will not return result: db.firestore().collection('contacts').where('emails.susan@xpto.com', '==', 'Susan').get().then(...

Because of the dot at "susan@xpto.com"

How to escape the dot?

I've tried `` and [ ] and didn't work.

回答1:

The documentation that suggests you should escape fields using backticks is actually not correct. It's in the process of being fixed. Instead, you should use FieldPath to build a path to the field to query:

db.firestore()
.collection('contacts')
.where(new FieldPath('emails', 'susan@xpto.com'), '==', 'Susan').

来源：https://stackoverflow.com/questions/49396148/firestore-query-properties-with-special-characters