UITextField progression with NITableViewModel

gistfile1.m

// Currently in a subclass of NITextInputFormElement
///////////////////////////////////////////////////////////////////////////////////////////////////
- (BOOL)shouldUpdateCellWithObject:(PPHTextInputFormElement *)textInputElement {
    textInputElement.textFieldConfigBlock(self.textField);
    if ([super shouldUpdateCellWithObject:textInputElement]) {

        //textInputElement.textFieldConfigBlock(self.textField);

        return YES;
    }
    return NO;
}

// When creating the datasource from a UIViewController
self.firstNameItem = [NITextInputFormElement textInputElementWithID:PPHOBPersonalInfoTableCellIDFirstName placeholderText:NSLocalizedString(@"First Name", @"First name placeholder text") value:nil delegate:self textFieldConfigBlock:^(UITextField *textField) {
            [self forgetTextField:textField];
            self.firstNameTextField = textField;
            textField.returnKeyType = UIReturnKeyNext;
}];

// ...

- (void)forgetTextField:(UITextField *)aTextField {
    if (self.firstNameTextField == aTextField) {
        self.firstNameTextField = nil;
    }
    if (self.lastNameTextField == aTextField) {
        self.lastNameTextField = nil;
    }
    // ... etc ...
}

// ...

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    
    if (textField == self.firstNameTextField) {
        [self.lastNameTextField becomeFirstResponder];
        return NO;
    } else if (textField == self.lastNameTextField) {
        [self.dateOfBirthTextField becomeFirstResponder];
        return NO;
    }
    // ... etc ...
}