CODEWITHSUNDEEP
firebasefluttergoogle-cloud-firestore
flutter
flutter

Reputation: 6786

delete a document in firebase when you know the field value

Context: In the frontend the user can enter of delete dates for availability. This is how I added a date:

Firestore.instance.collection('availableDates').add({
        'availableDates':date});

But I also need to delete a document from a collection in Firestore. I don't know the document id but I know the the field value which is unique. How would I go about deleting the document if I know the field value within the document. Here is a screen shot of firestore:

enter image description here

Upvotes: 3

Views: 2564

Answers (2)

nick.tdr
nick.tdr

Reputation: 4943

You can fetch the document first and then delete the document. For example:

var collection = FirebaseFirestore.instance.collection('countries');
var snapshot = await collection.where('city', isEqualTo: 'CA').get();
await snapshot.docs.first.reference.delete();

Upvotes: 10

Raza Shabbir
Raza Shabbir

Reputation: 161

If anyone is confused after the update of why this code is not working please refer to this one. Update of March 21st, 2021.

refUser.where("city", isEqualTo: "CA").get().then((snapshot){
snapshot.docs.first.reference.delete();
});

I took a bit of time myself to get around this but if it helps even a single person stuck like me then it's all worth it. :)

Upvotes: 2

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