(JavaScript) Firebase PATCH - Updating Data

Uses the PATCH method to update record with new information. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// Uses the PATCH method to update a Firebase record.

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example assumes a JWT authentication token, if required, has been previously obtained.
// See Get Firebase Access Token from JSON Service Account Private Key for sample code.

// Load the previously obtained Firebase access token into a string.
var fac = new CkFileAccess();
var accessToken = fac.ReadEntireTextFile("qa_data/tokens/firebaseToken.txt","utf-8");
if (fac.LastMethodSuccess !== true) {
    console.log(fac.LastErrorText);
    return;
}

var rest = new CkRest();

// Make the initial connection (without sending a request yet).
// Once connected, any number of requests may be sent.  It is not necessary to explicitly
// call Connect before each request.  
success = rest.Connect("chilkat.firebaseio.com",443,true,true);
if (success !== true) {
    console.log(rest.LastErrorText);
    return;
}

var authGoogle = new CkAuthGoogle();
authGoogle.AccessToken = accessToken;
rest.SetAuthGoogle(authGoogle);

// Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json
// This data is publicly readable, but not writable.  You'll need to 
// run against your own database..

// We're going to update "Molly II" to "Molly III"
var pigNameUpdate = new CkJsonObject();
pigNameUpdate.AppendString("name","Molly III");

// The string content of the last arg passed is  {"name":"Molly III"} 
var jsonResponse = rest.FullRequestString("PATCH","/pig-rescue/animal/-KI3bD-FU_Dake7sYOiP.json",pigNameUpdate.Emit());
if (rest.LastMethodSuccess !== true) {
    // Something happened in the communications (either no request was sent, or no response was received.
    // (The Chilkat REST API also has lower-level methods where an app can send the request in one call,
    // and then receive the response in another call.)
    console.log(rest.LastErrorText);
    return;
}

// Check the response status code.   A 200 response status indicates success.
if (rest.ResponseStatusCode !== 200) {
    console.log(rest.ResponseStatusText);
    console.log(jsonResponse);
    console.log("Failed.");
    return;
}

// When successful, the response contains the data written.
console.log(jsonResponse);
console.log("Success.");