CODEWITHSUNDEEP
firebasegogoogle-cloud-firestore
Mathias Bak
Mathias Bak

Reputation: 5115

How to get Firestore document ID marshalled into struct?

I want to fetch a document from Firestore and have it marshalled into my custom struct. Currently all data is unmarshalled, but I can't find a way to get the document ID into my struct. Here is an example:

type MyStruct struct {
    ID    string                        // What to put here?
    PropA string `firestore:"prop_a"`
    PropB string `firestore:"prop_b"`
}

doc, err := client.Doc(docref).Get(ctx) // Fetch document
var x MyStruct                          // Allocate object
err = doc.DataTo(&x)                    // Unmarshal

The result is that PropA and PropB are populated on x, but I have no idea how to populate the ID field with the document ID.

I can obviously just manually fish it out of doc, but it feels like DataTo should be able to handle this.

Upvotes: 1

Views: 392

Answers (1)

blunder
blunder

Reputation: 11

The id is not part of the document data. Assign it as you mentioned:

x.ID = doc.Ref.ID

Upvotes: 1

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