Hi,
I am getting an error “Unable to retrieve value for field/property ‘contacts’” when i am attempting to save my user object (BackendlessUser) which contains a one-to-many relation. However, when i go to the backendless database dashboard, all data are saved with relations linked.
Below are the relationship:
Backendless User
http://support.backendless.com/public/attachments/6dc620c1b8f1908fa0343338baf2f4f1.png</img>
PhoneBook
http://support.backendless.com/public/attachments/80749b5a3fe6784b01eb353b12ae7843.png</img>
Contact
http://support.backendless.com/public/attachments/6badb6151c35fae0cf61f8c708df356f.png</img>
Here are something that i’ve tried:
- Use the latest backendless.jar - still same
- Use both synchronous and asynchronous method - still same
- Remove the one-to-many “contacts” from PhoneBook - get the same error but changed from ‘contacts’ to ‘owner’
- Remove both one-to-many “contacts” and one-to-one “owner” from PhoneBook - works fine
- Save the PhoneBook object only - works fine
This is very annoying since I can’t really save the basic user object. Please give some advice. Thanks.
Here is my code, a very simple one:
Runnable runnable = new Runnable() {
public void run() {
final BackendlessUser user = new BackendlessUser();
final String userEmail = "xxxfillInYourEmailHerexxx";
final String userPassword = "test1234";
user.setEmail(userEmail);
user.setPassword(userPassword);
//synchronous api call is not allowed in the main UI thread, you must use a different thread to run this.
try {
Backendless.UserService.register(user);
}
catch(BackendlessException exp)
{
Log.d("Backend error: ", exp.toString());
}
try {
BackendlessUser backendlessUser = Backendless.UserService.login(userEmail, userPassword, true);
Backendless.UserService.setCurrentUser(backendlessUser);
}
catch(BackendlessException exp)
{
Log.d("Backend error: ", exp.getMessage());
}
Log.d("Successfully login: ", Backendless.UserService.CurrentUser().getEmail());
Address address = new Address();
address.setStreet("TN 55");
address.setCity("Lynchburg");
address.setState("Tennessee");
Contact owner = new Contact();
owner.setName("Jack Daniels");
owner.setAge(147);
owner.setPhone("777-777-777");
owner.setTitle("Favorites");
owner.setAddress(address);
Contact contact2 = new Contact();
contact2.setName("Jack2");
contact2.setAge(5);
contact2.setPhone("777-777-777");
contact2.setTitle("Favorites");
contact2.setAddress(address);
Contact contact3 = new Contact();
contact3.setName("Jack3");
contact3.setAge(10);
contact3.setPhone("777-777-777");
contact3.setTitle("Favorites");
contact3.setAddress(address);
Contact contact4 = new Contact();
contact4.setName("Jack4");
contact4.setAge(58);
contact4.setPhone("777-777-777");
contact4.setTitle("Favorites");
contact4.setAddress(address);
Contact contact5 = new Contact();
contact5.setName("Jack5");
contact5.setAge(500);
contact5.setPhone("777-777-777");
contact5.setTitle("Favorites");
contact5.setAddress(address);
List<Contact> contactList1 = new ArrayList<Contact>();
contactList1.add(owner);
contactList1.add(contact2);
contactList1.add(contact3);
List<Contact> contactList2 = new ArrayList<Contact>();
contactList2.add(contact4);
contactList2.add(contact5);
List<Contact> contactList3 = new ArrayList<Contact>();
contactList3.add(owner);
contactList3.add(contact3);
contactList3.add(contact5);
PhoneBook phoneBook = new PhoneBook();
phoneBook.setOwner(owner);
phoneBook.setContacts(contactList2);
phoneBook.setIsFavourite(true);
PhoneBook phoneBook2 = new PhoneBook();
phoneBook2.setOwner(contact5);
phoneBook2.setContacts(contactList1);
phoneBook2.setIsFavourite(true);
PhoneBook phoneBook3 = new PhoneBook();
phoneBook3.setOwner(contact2);
phoneBook3.setContacts(contactList3);
phoneBook3.setIsFavourite(false);
final List<PhoneBook> phoneBookList = new ArrayList<PhoneBook>();
phoneBookList.add(phoneBook);
phoneBookList.add(phoneBook2);
phoneBookList.add(phoneBook3);
BackendlessUser currentUser = Backendless.UserService.CurrentUser();
currentUser.setProperty("PhoneBookList", phoneBookList);
try {
BackendlessUser savedUser = Backendless.Persistence.save(currentUser);
// user has been updated
Object[] objects = (Object[]) savedUser.getProperty("PhoneBookList");
if (objects.length > 0) {
PhoneBook[] userPhoneBookList = (PhoneBook[]) objects;
for (PhoneBook phonebook : userPhoneBookList)
Log.d("response: ", phonebook.getOwner().getName());
}
}
catch(BackendlessException exp)
{
Log.d("Backend error: ", exp.getMessage());
}
}
};
Thread mythread = new Thread(runnable);
mythread.start();
