Pass object from tableview to destination with revealviewcontroller in between - swift

Question

I am trying to pass an object from my tableview to the detail view. I am using the revealviewcontroller framework to have a slide out menu. Therefore I need to create a segue from the tableview to the revealviewcontroller and from here another one to the final detailviewcontroller.
That is why I can´t set the object in the detail view - any idea how to do so?
This is the used code:
if segue.identifier == "communityDetailSegue" {
// Get the cell that generated this segue.
if let selectedCommunityCell = sender as ? UITableViewCell {
let destination = segue.destinationViewController as!CommunityViewController
if let communityIndex = self.tableView.indexPathForCell(selectedCommunityCell) {
destination.community = self.communitiesOfCurrentUser[communityIndex.row]
print(self.communitiesOfCurrentUser[communityIndex.row].name)
}
}
}
And this is the exception.
Could not cast value of type 'SWRevealViewController' (0x10027b9f0) to 'CommunityViewController'

Answer 1

You get the error because the segue's destination VC is the SWRevealViewController and not the CommunityViewController.
One way of solving your problem would be to pass the value in two steps:
First, in prepareForSegue() you pass the value to the SWRevealViewController (you'll need a subclass for this one, e.g. MyRevealViewController):
if segue.identifier == "communityDetailSegue" {
// Get the cell that generated this segue.
if let selectedCommunityCell = sender as ? UITableViewCell {
let destination = segue.destinationViewController as! MyRevealViewController
if let communityIndex = self.tableView.indexPathForCell(selectedCommunityCell) {
destination.community = self.communitiesOfCurrentUser[communityIndex.row]
print(self.communitiesOfCurrentUser[communityIndex.row].name)
}
}
}
Then, in MyRevealViewControlleryou can pass the value as soon as it is set:
class MyRevealViewController : SWRevealViewController {
// Let's assume this is the outlet to your final VC:
IBOutlet let communityViewController: CommunityViewController!
var community: YourCommunityType {
didSet {
if let communityVC = self.communityViewController {
communityVC.community = self.community
}
}
}
}