Vapor pass data from postgres to a leaf template - swift

Question

I'm new to Vapor,
I try to pass data from postgres to leaf.
In the routes.swift I have the function to render the leaf template:
func routes(_ app: Application) throws {
app.get("all") { req -> EventloopFuture<View> in
let todos = Todo.query(on: req.db).all()
let context = TodoContext(todos: todos)
return req.view.render("index", context)
}
}
But I get an Error from the context line, it says Cannot convert value of type 'EventLoopFuture<[Todo]>' to expected argument type '[Todo]'.
How do I convert a EventLoopFuture<[Todo]> to '[Todo]' so I can use it in the context?
I try the map function after query .all(), but after this its still a EventLoopFuture<[Todo]>.
The TodoContext:
struct TodoContext: Content {
let todos: [Todos]
}
The Todo Model:
final class Todo: Model, Content {
static let schema = "todo"
#ID(key: .id)
var id: UUID?
#Field(key: "todo")
var todo: String
#Field(key: "complete")
var complete: Bool
init() { }
init(id: UUID? = nil, todo: string, complete: Bool) {
self.id = id
self.todo = todo
self.complete = complete
}
}

Answer 1

You're correct in that you need to handle the future but you should use flatMap since the render call returns a future. So your code should look like:
func routes(_ app: Application) throws {
app.get("all") { req -> EventloopFuture<View> in
return Todo.query(on: req.db).all().flatMap { todos in
let context = TodoContext(todos: todos)
return req.view.render("index", context)
}
}
}