Parse Cloud Code Push Notifications

Question

I have a Class "Storybaord" and there are two instances of when to send a Push Notification.

A user likes a post - [postObject addUniqueObject: [PFUser currentUser] forKey:@"likes"];
A user comments on a post - [postObject addUniqueObject: self.comment forKey:@"comments"];

In my cloud code I use Parse.Cloud.afterSave but I am unsure of how to distinguish between the two, and also determine if they even happen, because there are other occasions of saving the postObject without needing to send a push.

Cloud Code:

Parse.Cloud.afterSave("Storyboard", function(request){
    var user = Parse.User.current();
    var postUser = request.object.get('userId');

    var pushQuery = new Parse.Query(Parse.Installation);
    pushQuery.equalTo ('userId', postUser);

    Parse.Push.send({
            where: pushQuery,
            data: {
                alert: "Liked Your Post"
                }
                    }, {
                    success: function(){

                    },
                    error: function(){

                    }
            });
    });

So your using client-side code to perform the object updates but cloud code to send a push? You will have to tell if client-side to perform a cloud function with parameters for the push or simply push the notification client-side. Either way is done within the postObject client-side. Would you like an example answer for a client side or are you dead-set on cloud push? — soulshined
– soulshined, Commented Aug 28, 2015 at 1:31
@soulshined Well right now push notifications are sent client side, but from what i have read, it is a security issue. So, I am trying to switch over to cloud code to send push notifications. — Peter
– Peter, Commented Aug 28, 2015 at 1:35
So then, create a cloud code function for when a user likes a postObject and if successfully saved, send a push. Then create a separate cloud code function for the comment and send a push within that function. Essentially just like you would client side. No reason to create a conditional statement when it can all be handled in responses or call backs — soulshined
– soulshined, Commented Aug 28, 2015 at 1:37
@soulshined Yes understood. Thats what I'm trying to do but this is my first time writing cloud code and am confused what to call to distinguish which is which. — Peter
– Peter, Commented Aug 28, 2015 at 1:42

soulshined · Accepted Answer · 2015-08-29 01:22:52Z

If your insistent on sending the push via cloud code, all you have to do is set a conditional statement client-side and act accordingly, that way you can opt to send or not according to your needs, since you mentioned something about selectively sending pushing:

if (self.likeButton.isSelected) {
    [PFCloud callFunctionInBackground:@"alertAuthor" withParameters:@{@"message", [NSString stringWithFormat:@"%@ liked your post!", [PFUser currentUser].username]}
} 

if (self.commentEntered) {
    [PFCloud callFunctionInBackground:@"alertAuthor" withParameters:@{@"message", [NSString stringWithFormat:@"%@ commented on your post!", [PFUser currentUser].username]}
}

And simply send a push using the parameters via cloud code:

Parse.Cloud.define("alertAuthor", function(request,response){
  var query = new Parse.Query(Parse.User);
  var message = request.params.message;
  query.equalTo('username', 'postUser');

  Parse.Push.send({
    where: query,
    data : { 
      alert: message,
      badge: "Increment",
      sound: "",
    }
    }, {
    success: function() {
    //Success
    },
    error: function(error) {
    //Oops
    }
  });
});

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