Firestore Find Doc And Set Data Code Example

Snippet 1

  var washingtonRef = db.collection("cities").doc("DC");// Atomically add a new region to the "regions" array field.washingtonRef.update({    regions: firebase.firestore.FieldValue.arrayUnion("greater_virginia")});// Atomically remove a region from the "regions" array field.washingtonRef.update({    regions: firebase.firestore.FieldValue.arrayRemove("east_coast")}); 

Snippet 2

  firebase deploy --only functions:functionNameHere 

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