Writing data to Firebase

Now, let's alter our application to be more interactive and enable posting messages to Firebase:

1. First, let's add a pushData method to the Firebase service:

export const pushData = (endpoint, data) => {
  return firebase.database().ref(endpoint).push(data);
}

We are using push method here because we want to push additional data. There are other methods--such as set, which overrides data and update, which updates a specific entry in a database.

2. Now, let's add a proper API call in our API service:

export const postMessage = (message) => {
   if (Boolean(message)) {
     pushData('messages', {
        incoming: false,
         message
     })
   }
}

3. We check here whether a message is empty and use the pushData method...