Firebase Batch set with invalid data-CodePudding

Error Message: Function WriteBatch.set() called with invalid data. Data must be an object, but it was: www.google.com

I have a button that onclick runs the addQuotes function.

Where am I going wrong?

const addQuotes = async () => {
      let test = ['https://www.google.com/', 'https://www.google.com/about',]
      const obj1 = Object.assign({}, test);
      const batch = writeBatch(db);

Object.keys(obj1).forEach(key => {
  var docRef = db.collection("col").doc(); //automatically generate unique id
  batch.set(docRef, obj1[key]);
});

 batch.commit().then(function () {
        console.log("hello")
    });
}

CodePudding user response：

As the error says, the data param should be an object (second argument to the batch.set method)

Commented out the firebase methods invocation for running the code and show you the o/p

// In your case when you do 
let test = ['https://www.google.com/', 'https://www.google.com/about', ]
const obj1 = Object.assign({}, test);

console.log(obj1);


// and ignoring the unique id step


Object.keys(obj1).forEach((key, index) => {
  // var docRef = db.collection("col").doc(); //automatically generate unique id
  
  console.log(obj1[key]);  // here it is just the string value
  
  console.log({[index]: obj1[key]}); // here it is an object
  
  //when you do the bellow line
  // batch.set(docRef, obj1[key]); // value of obj1[key] is just string which is not the correct type 
  
  // may be you do something as below (key can be as you want it to be)
  // batch.set(docRef, {[index]: obj1[key]});  // index is added as key for the object which in now an object and should work
  
});

I used {[index] : obj1[key]} notation which is computed property in object

Hope it's clear