gistfile1.m

- (void)tableViewEnabled:(BOOL)enabled withBlock:(void (^)(void))block
{
    
    if (enabled) {
        [self transitionView:^{
            self.tableView.alpha = 1;
            _minMaxNightsHeightConstraint.constant = 0;
            [_minMaxStayLabel resetStyle];
            
            _minMaxStayLabel.text = @"";
            
            if (block) {
                block();
            }
        }];
    }
    else {
        [self transitionView:^{
			_minMaxStayLabel.hidden = NO;
            
			if (self.availability.stayRuleViolations.count > 0) {
                _minMaxStayLabel.text = self.availability.stayRuleViolations[0][@"description"];
            }
            if (self.availability.availableRooms.count == 0) {
                _minMaxStayLabel.text = [NSString stringWithFormat:NSLocalizedString(@"NO_AVAILABLE_ROOMS", nil)];
            }
            _minMaxNightsHeightConstraint.constant = 30;
            self.tableView.alpha = 0.3;
            [_minMaxStayLabel emphasiseStyle];
            
            if (block) {
                block();
            }
        }];
    }
    
    self.tableView.userInteractionEnabled = enabled;
}

- (void)transitionView:(void (^)(void))block
{
    [UIView animateWithDuration:0.2f delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
        if (block) {
            block();
        }
        [self.view layoutIfNeeded];
    } completion:nil];
}