CODEWITHSUNDEEP
swiftfirebasefirebase-realtime-databasefirebase-authentication
user2640633
user2640633

Reputation:

Swift Firebase Must be a non-empty string and not contain '.' '#' '$' '[' or ']'

This is a follow up to my previous question. I am trying to see if an email has already been used.

I am using the line 

if snapshot.hasChild(email) {

I have in my database an email [email protected] When I type that in..the moment I get to the '.' before com the app crashes and gives an error that says this 

Must be a non-empty string and not contain '.' '#' '$' '[' or ']'

I see a lot of posts about checking for usernames, but my app doesn't have usernames, just email. Am I able to use email with 

hasChild(...) {...

Upvotes: 1

Views: 2715

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 599031

Firebase keys cannot contain a . (dot) character. If you want to store an email address in a key, you'll have to encode it. The common way to do that is to replace the . with a , (comma), which conveniently is not allowed in email addresses. So [email protected] would be encoded as test1@test,com.

I don't think you're actually storing the email address as a key, but I'll follow up for that on your previous question.

Upvotes: 5

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