Hands-On Server-Side Web Development with Swift

Adding the login page

One of the routes you added previously to the public route is to render a Login page for the user to enter credential information.

Add the showLogin handler for the "login" route:

func showLogin(_ req: Request) throws -> Future<View> {    let leaf = try req.make(LeafRenderer.self)    var loginError : Bool = false    var loginRequired : Bool = false    if req.query[Bool.self, at: "error"] != nil { loginError = true }     if req.query[Bool.self, at: "login"] != nil { loginRequired = true }     let context = LoginContext(login: loginRequired,                               error: loginError,                               title: self.title,                               author: self.author)        return leaf.render("login", context)}

The showLogin handler passes a LoginContext instance to render the login.leaf template. It checks for ...