Create a google calendar event from salesforce

Question

I have a visual force page for my organization where each member can schedule a task by clicking simply on a commandbutton. what i want is when he clicks on the button, i create a event on his google calendar with the corresponding date. i know this is possible in apex and i red the documentation on the google calendar API (here) but i did not understand any thing , can you please provide me with a sample code on how to do that in apex ?

Answer 1

I wrote a tutorial on this functionality long back. Here are the steps

1. Create Google client id and client secret.
2. Create a button on your task object and it will ask user to login and it will create event in calendar.

Here are the snippet for the same.

var clientId = 'YOUR_CLIENT_ID';
var apiKey = 'YOUR_API_KEY'; 

var scopes = 'https://www.googleapis.com/auth/calendar'; 

// Use a button to handle authentication the first time.
function handleClientLoad() {
gapi.client.setApiKey(apiKey);
window.setTimeout(checkAuth,1);
} 

function checkAuth() {
gapi.auth.authorize({client_id: clientId, scope: scopes, immediate: true}, handleAuthResult);
} 

function handleAuthResult(authResult) {
// var authorizeButton = document.getElementById('authorize-button');
if (authResult && !authResult.error) { 

makeApiCall(); 

} else {
handleAuthClick();
}
} 

function handleAuthClick() {
gapi.auth.authorize({client_id: clientId, scope: scopes, immediate: false}, handleAuthResult);
return false;
} 

// Load the API and make an API call. Display the results on the screen.
function makeApiCall() {
AddEvent();
}
function AddEvent()
{
var startdate='{!YEAR(DATEVALUE(Task.CreatedDate))}' + '-' + '{!MONTH(DATEVALUE(Task.CreatedDate))}' + '-' + '{!DAY(DATEVALUE(Task.CreatedDate))}';
var enddate='{!YEAR(Task.ActivityDate)}' + '-' + '{!MONTH(Task.ActivityDate)}' + '-' + '{!DAY(Task.ActivityDate)}'; 

var resource = {
"summary":"{!Task.Subject}",
"description": "{!Task.Description}",
"start": {
"date": startdate
},
"end": {
"date": enddate
}
};
gapi.client.load('calendar', 'v3', function() {
var request = gapi.client.calendar.events.insert({
'calendarId': 'primary',
'resource': resource
});
request.execute(function(resp) {
console.log(resp);
if (resp.id){
alert("Event was successfully added to the calendar!");
}
else{
alert("An error occurred. Please try again later.")
} 

});
}); 

}
{!REQUIRESCRIPT("https://apis.google.com/js/client.js?onload=handleClientLoad")};
handleClientLoad()

You can read full tutorial here: http://sfdcbeginner.com/google-calendar-integration-with-salesforce.html