Hands-On Server-Side Web Development with Swift

Removing a journal entry

Finally, the following code demonstrates how the entry is removed:

app.router.get("/journal/remove/:index?") { request, response, next in    guard let index = request.parameters["index"] else {        return try response.status(.badRequest).send("Missing entry index").end()    }    guard let idx = Int(index) else {        return try response.status(.badRequest).send("Invalid entry index").end()    }    if let entry = journal.delete(index: idx) {        print("Deleted: Entry[\(index)]: \(entry)")        try response.redirect(mainPage)    }    try response.status(.unprocessableEntity).end()}

The route handling process follows the similar step to decipher the URL parameter from request. Then it calls JournalController.delete() to update the deletion of that entry by ...