We Keep Coding

Socket.IO - Callback to user who emited only

I am making a chat application which requires users to log in, I have so far managed to get the login system working by using UserApp.io, but I cant seem to find a way which would send a "Callback" back to the user who has emited the information to the server.
So for index.html, when a login form is submitted, it would gather the values of the two fields and emit the data to the backend.
$('form#login').submit(function() {
var data = {};
data.email = $("#login_email").val();
data.password = $("#login_password").val();
socket.emit('user login', data);
});
In the index.js file, it receives the details and checks using the UserApp API that the user is valid and all the details are correct. It also retrieves information like the first and last name.
socket.on('user login', function (user) {
logger.info('Receiving login info for "' + user.email + '"...');
UserApp.User.login({"login": user.email, "password": user.password}, function (error, result) {
if (error) {
logger.error('Login failed: ' + error.message);
} else {
var userToken = result.token;
var userID = result.user_id;
console.log("User has logged in.");
UserApp.User.get({
"user_id": userID
}, function (error, result) {
if (error) {
logger.error(error.message);
} else {
logger.info(result[0]['first_name'] + " " + result[0]['last_name'] + " Has logged in!")
}
});
}
});
});
So here is my issue. I cant seem to find a way of giving a callback to index.html so it can show errors like "Incorrect username".
So is there a way of giving a callback to one person, more specificly, the person who submitted the login form?
Any help would be appreciated.
Thanks.

socket.io has acknowledgement callbacks, here are the docs
http://socket.io/docs/#sending-and-getting-data-(acknowledgements)
Add a callback function as the third argument when emitting
$('form#login').submit(function() {
var data = {};
data.email = $("#login_email").val();
data.password = $("#login_password").val();
socket.emit('user login', data, function (result) {
console.log(result);
});
});
and then the callback function server side can have an additional parameter which is the callback you defined when emitting
socket.on('user login', function (user, callback) {
logger.info('Receiving login info for "' + user.email + '"...');
UserApp.User.login({"login": user.email, "password": user.password}, function (error, result) {
if (error) {
logger.error('Login failed: ' + error.message);
} else {
var userToken = result.token;
var userID = result.user_id;
console.log("User has logged in.");
UserApp.User.get({
"user_id": userID
}, function (error, result) {
if (error) {
logger.error(error.message);
} else {
logger.info(result[0]['first_name'] + " " + result[0]['last_name'] + " Has logged in!")
return callback('your results');
}
});
}
});
});

Parse user.signUp, error call back not triggered

I am using parse javascript SDK, but when I try to handle user registration errors, such like username already taken, the error callback is not triggered.
The code I have is:
signUp: function () {
var self = this;
var errors = this.form.commit({ validate: true });
if(errors) return;
mainapp.showSpinner();
this.model.signUp({
success: function (user) {
console.log(user);
},
error: function (user, error) {
//mainapp.hideSpinner();
console.log('called')
self.errorMessage.html(error);
}
});
},
And the console.log('called) is not triggered, but in console of Chrome I have an javascript error POST https://api.parse.com/1/users 400 (Bad Request)
Any idea how can i catch and handle the error in the error callback?

By checking at the Parse JS sdk documentation, it seems like you miss one parameter when calling sign up function :
user.signUp(null, {
success: function(user) {
// Hooray! Let them use the app now.
},
error: function(user, error) {
// Show the error message somewhere and let the user try again.
alert("Error: " + error.code + " " + error.message);
}
});
https://parse.com/docs/js/guide#users-signing-up
Hope this could help to solve your problem.

Adding Users to Parse Role in Cloud Code

I want to add users to my Parse.Role but it's not working. I looked at a number of examples and they all seem pretty straight-forward however I'm unable to get it right. Here is my code:
Parse.Cloud.define("activateVendor", function(request, response){
var query = new Parse.Query(Parse.Role);
query.equalTo("name", "vendor");
query.first ({
success: function(role) {
role.getUsers().add(request.params);//request.params is the parse object, should I be using request.params.id?
role.save();
},
error: function(error) {
throw "Got an error " + error.code + " : " + error.message;
}
})
});

It depends on who you wish added to the role. The user who made the cloud request is available via the request object...
role.getUsers().add(request.user);
Otherwise, you can get a user via a query as #RobertRowntree suggests. (though, I'd suggest doing it with promises).

does what you want with 2 queries (Role, User) ...
var qu = new Parse.Query(Parse.User);
var qr = new Parse.Query(Parse.Role);
Parse.Cloud.useMasterKey();
qr.get(roleId, {
success: function(role) {
_role = role;
qu.get(userId, {
success: function(user) {
_role.getACL().setRoleReadAccess(_role, true);
_role.getUsers().add(user);
_role.save();
response.success(_role.toJSON());
},
error: function(object, error) {
}
});
},
error: function(object, error) {
}
});

Phonegap Facebook Connect - Getting User's Birthday and Name

My app is in the early development stage. I'm using the latest PhoneGap Build and Facebook Connect plugin. I managed to get the login working - you tap the Login With Facebook button, it switches to the Facebook app, Facebook passes my app an object with the basic login key/token & userID, and then my app tries to reach out for the user's full name and age.
I can't seem to get Facebook to give me any information other than the user's ID and full name. I need the user's age! For some reason, adding a projection isn't working... What's wrong with my code?
var fbLoginSuccess = function (userData) {
facebookConnectPlugin.getAccessToken(function(token) {
if(userData['status'] == 'connected'){
getBasicUserInfo_fb(userData);
}
}, function(err) {
alert("Could not get access token: " + err);
});
}
function getBasicUserInfo_fb(userData){
facebookConnectPlugin.api(userData['authResponse']['userID'] + "/?fields=id,birthday", ["user_birthday"], function (response) {
if (response && !response.error) {
alert("response: " + JSON.stringify(response));
console.log(response);
var user_name = response['name'];
var user_age = response['birthday'];
var user_picture = response['picture'];
}
},
function (error) {
console.log(error);
alert("Failed: " + JSON.stringify(error));
});
}
The Github page (https://github.com/Wizcorp/phonegap-facebook-plugin) says:
Getting a User's Birthday
Using the graph api this is a very simple task:
facebookConnectPlugin.api("<user-id>/?fields=id,email", ["user_birthday"],
function (result) {
alert("Result: " + JSON.stringify(result));
/* alerts:
{
"id": "000000123456789",
"email": "myemail#example.com"
}
*/
},
function (error) {
alert("Failed: " + error);
});
I might be losing my mind but the example on Github is saying how to get the birthday, and the scope is set up to get that, BUT then the parameters are set up to get the email address. Basically all I've done is changed "id,email" to "id,birthday"... What am I doing wrong?!

Apparently I was wrong to have "user_profile" in my initial login request... I guess it only accepts one parameter?
The bad version:
facebookConnectPlugin.login(["public_profile","user_birthday"],
fbLoginSuccess,
function (error) { alert("" + error) }
);
The good version:
facebookConnectPlugin.login(["user_birthday"],
fbLoginSuccess,
function (error) { alert("" + error) }
);

Send push notification in parse cloud code after matching two different classes

I am trying to send a push notification after a user's status update has changed (status update is managed in the submission class in parse core data) but I'm using cloud code to match users phone numbers in the User and submission classes so that the push notification only targets the one specific user.
Parse.Cloud.afterSave("submission", function(request) {
var statusText = request.object.get('status');
var phoneNumber = request.object.get('Phone');
Parse.Cloud.afterSave("User", function(request) {
var userPhone = request.object.get('Phone');
var pushQuery = new Parse.Query(Parse.submission);
pushQuery.matchesQuery(userPhone, phoneNumber);
Parse.Push.send({
where: pushQuery, // Set our Installation query
data: {
alert: "Status Change: " + statusText
}
}, {
success: function() {
},
error: function(error) {
throw "Got an error " + error.code + " : " + error.message;
}
});
});