CODEWITHSUNDEEP
node.jsgoogle-cloud-firestore
buttonsrtoys
buttonsrtoys

Reputation: 2771

Proper way to delete-if-exists?

I have a use case where I need to delete a document that may or may not exist. I delete like this

db.collection('cities').doc('DC').delete();

It works fine, but when the document doesn't exist, I get an error in the log, which I'd rather not see. I could read the document first to ensure it exists, but that seems wasteful. What's the proper delete-if-exists approach?

EDIT I'm performing this operation using Cloud Functions (JS)

Upvotes: 0

Views: 274

Answers (2)

Alex Beauchemin
Alex Beauchemin

Reputation: 1181

You can also use async/await and reuse the same doc for both actions

const doc = db.collection('cities').doc('DC')
const snapshot = await doc.get()
if (snapshot.exists) await doc.delete()

Upvotes: 0

Ran Turner
Ran Turner

Reputation: 18096

db.collection('cities').doc('DC').get().then(
     doc => {
        if (doc.exists) {
          db.collection('cities').doc('DC').delete().then(() => {
             console.log("Doc deleted!")
          })
        }
     }
 );

Upvotes: 2

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