Make a synchronous HTTP call with RestKit

Question

When logging a user into my application I need to pull a user object down from the server using only the username. This returns the userId (among other things) that I need i

Answer 1

Putting aside the question of whether this is the ideal design for an iPhone application, I was able to accomplish what I was hoping using blocks.

[[RKObjectManager sharedManager] loadObjectsAtResourcePath:[@"/api/users/" stringByAppendingString:[_userNameField text]] usingBlock:^(RKObjectLoader* loader) {

    loader.onDidLoadResponse = ^(RKResponse *response) {

        NSLog(@"Response: \n%@", [response bodyAsString]);
    };

    loader.onDidLoadObjects = ^(NSArray *objects) {

        APIUser *apiUser = [objects objectAtIndex:0];
        NSLog(@"user_id is %i", apiUser.user_id);


    };

    loader.onDidFailWithError = ^(NSError *error) {


            UIAlertView *badLoginAlert = [[UIAlertView alloc]initWithTitle:NSLocalizedString(@"LOGIN_FAILED", nil)
                                                                   message:NSLocalizedString(@"BAD PASSWORD OR USERNAME", nil)
                                                                  delegate:self
                                                         cancelButtonTitle:NSLocalizedString(@"OK", nil)
                                                         otherButtonTitles:nil];
            [badLoginAlert show];           
    };
}];

Hope this helps someone.