我尝试以这种方式保存关系
[pfBill pinInBackgroundWithBlock:^(BOOL succeeded, NSError *PF_NULLABLE_S error)
{
[relation addObject:pfBill];
[pfObjectWithRelations pinInBackgroundWithBlock:^(BOOL succeeded, NSError *PF_NULLABLE_S error)
{
}];
}];
但我做不到。
PFRelation *relation = [[PFUser currentUser] relationForKey:@"Relation"];
PFQuery *query = [[relation query] fromLocalDataStore];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error){
NSLog(@"%@", objects);
}];
它什么也不返回,但是如果我保存与 saveEventually 的关系,它会从本地数据存储中返回一些对象