backendless easy facebook login: fetching first name

Question

I'm trying to login to facebook using backendless easyLogin* method in Swift and to fetch user's facebook name to display further. I'm able to login successfully but can't get the name.

The code is as the following ("first_name" is facebooks graph field to map, "displayName" is backendless custom user field):

let backendless = Backendless.sharedInstance();

backendless.userService.easyLoginWithFacebookFieldsMapping(

    ["email":"email", "first_name":"displayName"], permissions: ["email", "public_profile"],

    response: {(result : NSNumber!) -> () in

    print ("Result: \(result)")

},

error: { (fault : Fault!) -> () in

    print("Server reported an error: \(fault)")

})

What am I missing here?

Answer 1

Not sure what was the exact problem but the following worked for me:

1. I've removed previously created facebook user from backendless user table

2. Tried to login using the following code snippet:

func easyFacebookLogin() {
    let fieldsMapping = [
    "name" : "name",
    "first_name": "first_name",
    "last_name" : "last_name",
    "email": "email"]
    backendless.userService.easyLoginWithFacebookFieldsMapping(
    fieldsMapping,
    permissions: ["email"],
    response: {(result : NSNumber!) -> () in
    print ("Result: \(result)")
    },
    error: { (fault : Fault!) -> () in
    print("Server reported an error: \(fault)")
    })
}

3. Everything worked as expected - name was fetched and mapped