ERROR Error: Function DocumentReference.set() called with invalid data. Unsupported field value: undefined (found in field activityId)

Question

I am trying to store my auto generated id into the documents field as.

  var act  =  this.afs.collection("activities").add({
  activityId = act.id,

    })
.then(function(docRef) {
    console.log("Document written with ID: ", docRef.id);
})
.catch(function(error) {
    console.error("Error adding document: ", error);
});

but in the console there is an error occur. I am sure I am using wrong approach. Please help me how can I access auto id of my document? Any help will be appreciated.

[Function DocumentReference.set() called with invalid data](https://stackoverflow.com/questions/48156234/function-documentreference-set-called-with-invalid-data-unsupported-field-val) — HDJEMAI, Mar 03 '18 at 14:32
Shouldn't that be `activityId: act.id` instead of `activityId = act.id`? — David Knipe, Mar 03 '18 at 20:25

Hareesh · Accepted Answer · 2018-03-03T19:18:05.047

1

You can use angularfire2 method .createId(). This will generate a random id locally.

let id = this.afs.createId();
this.afs.collection("activities").doc(id).set({
    activityId: id
});

edited Mar 03 '18 at 19:18

answered Mar 03 '18 at 15:42

Hareesh

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are you getting same error? can you `console.log(act.id)`? – Hareesh Mar 03 '18 at 19:07
sorry my fault, i didn't notice you using angularfire2. – Hareesh Mar 03 '18 at 19:11

ERROR Error: Function DocumentReference.set() called with invalid data. Unsupported field value: undefined (found in field activityId)

1 Answers1