Firestore. Add new array instead of replacing it

Question

I am trying to store orders(quantity, price, date, etc), I want to store each one in different arrays inside an array called "orders", but when I send the data, instead of creating a new array, it overwrites the one that was already there

this is my code

TS

this.FireServices.collection("clientData").doc(uid).update({
orders: [this.dataForm.value]
})

The data is obtained directly from a form

Doug Stevenson · Accepted Answer · 2020-09-19 16:57:15Z

1

If you want to add a new item to an array, you should use FieldValue.arrayUnion() to add to the existing array.

this.FireServices.collection("clientData").doc(uid).update({
    orders: firestore.FieldValue.arrayUnion(this.dataForm.value)
})

answered Sep 19, 2020 at 16:57

Doug Stevenson

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PacMan Programador Over a year ago

ailoviu su moch c:

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