how to add document to firestore database using react native

Question

We are trying add documents values manually using react native app to firestore DB.

Here is the reference code we found for web

db.collection("cities").doc("LA").set({
    name: "Los Angeles",
    state: "CA",
    country: "USA"
})
.then(function() {
    console.log("Document successfully written!");
})
.catch(function(error) {
    console.error("Error writing document: ", error);
});

For react native we used this code

firebase.firestore().collection('users').doc("hello").add({
        title: this.state.textInput,
        complete: false,
      })

I'm getting error like add us not defined

How to add documents and collections to it ?

Answer 1

You can add a document to a collection. You cannot add a document to a document.

To add a document to your users collection:

firebase.firestore().collection('users').add({
  title: this.state.textInput,
  complete: false,
})

So remove the .doc("hello") from there.

Answer 2

Here I found the solution for my data structure

firebase
  .firestore()
  .collection("Users")
  .doc("mydoc")
  .collection("Activities")
  .doc("Database")
  .set({
    key: "1",
    value: "",
  })
  .then((ref) => { console.log(ref) });