IBM Worklight - How to access JSON sent using an adapter in server-side PHP?

Question

I am developing a hybrid application in IBM Worklight.

In my app, there is a registration form. I have a requirement: After the user registers with the app, the form data will be sent to an external server in JSON format using an HTTP adapter.

In the external server,

• How to access the JSON data sent using the HTTP adapter in a PHP file? and
• How to send back a response in the same JSON format?

Please give demo codes of both HTTP adapter and server side PHP code.

Answer 1

Client code:

function callAdapter(){

    var invocationData = {
            adapter : 'MyAdapter',
            procedure : 'MyAdapterProcedure',
            parameters : [username, password]
    };

    WL.Client.invokeProcedure(invocationData, {
        onSuccess : adapterSuccessCallback,
        onFailure : adapterFailureCallback
    });
}

Adapter implementation:

function myAdapterProcedure(username, password) {

    var credentials = JSON.stringify({username: username, password: password});

    var input = {
        method : 'post',
        returnedContentType : 'json',
        path : "/myPHPscript.php",
        parameters: {credentials: credentials}
    };


    return WL.Server.invokeHttp(input);
}

PHP script:

<?php
        $jsonObj = $_POST['credentials'];
        $credentials = json_decode($jsonObj)

        // sanitation, database calls, etc

        $returnDict = array();
        $returnDict["success"] = true;
        echo json_encode($returnDict);
?>