Parse on Heroku

Configuration for heroku(required)

AppDelegate.swift

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        
// configuration of using Parse code in heroku
let parseConfig = ParseClientConfiguration {(ParseMutableClientConfiguration) in
        
//accessing heroku app via id & keys           
ParseMutableClientConfiguration.applicationId = "instagramlyh"
ParseMutableClientConfiguration.clientKey = "instagramhc"
ParseMutableClientConfiguration.server = "http://fakeinstagram.herokuapp.com/parse"    
}    
Parse.initialize(with: parseConfig)

// Override point for customization after application launch.
return true
}

Save data to parse server

viewController.swift

// Unwrap image file data from UIImageView
let data = UIImageJPEGRepresentation(picture.image!, 5)

// Convert image to file
let file = PFFile(name: "picture.jpg", data: data!)

// Create a class in Heroku
let table = PFObject(className: "messages")
table["sender"] = "Akhmed"
table["receiver"] = "Bob"
table["message"] = "Hello Bob!"
table["picture"] = file

table.saveInBackground { (success:Bool, error:Error?) in
if success {
print("Saved in server")
}else{
print(error!)
}
}

Get data from parse server

let information = PFQuery(className: "messages")
information.findObjectsInBackground { (objects:[PFObject]?, error:Error?) in
            // if no error...
            
            if error == nil {
                
                //take each object from list of objects.
                for object in objects!{
                    
                    let message = object["message"] as! String
                    let receiver = object["receiver"] as! String
                    let sender = object["sender"] as! String
                    let picture = object["picture"] as! PFFile
                    
                    self.messageLbl.text = "Message:\(message)"
                    self.receiverLbl.text = "Receiver:\(receiver)"
                    self.senderLbl.text = "Sender:\(sender)"
                    picture.getDataInBackground(block: { (data:Data?, error:Error?) in
                        
                        if error == nil {        
                            if data != nil {
                                self.picture.image = UIImage(data:data!) 
                            }
                        } else {
                            print(error!)
                        }
                    })
                }   
                }else{   
                    print(error!)
                }
            }   
        }