Vapor 3 rendering complex call in Leaf - vapor

Question

Here's the call that works with my API, but I need to render the result in leaf. This currently works fine with the API. Just not sure how where I'm grabbing the teams.
func getTeamsWithUsersForEvent(_ req: Request) throws -> Future<[TeamWithUsers]> {
let currentID = try req.parameters.next(Int.self)
print("currentID \(currentID)")
return Team.query(on: req).filter(\Team.eventID == currentID).sort(\Team.rawScore, .descending).range(..<5).all().flatMap(to: [TeamWithUsers].self) { team in
try team.map { team in
try team.users.query(on: req).all().map { users in
var score: Int
if users.isEmpty {
score = 0
}else{
score = team.rawScore / users.count
}
return TeamWithUsers(
id: team.id,
name: team.name,
icon: team.icon,
eventID: team.eventID,
rawScore: team.rawScore,
//users: users,
count: users.count,
teamScore: score
// teamScore: team.rawScore / users.count
)
}
}.flatten(on: req)
}
}
struct TeamWithUsers: Content {
let id: Int?
let name: String
let icon: String
let eventID: Event.ID
let rawScore: Int
//let users: [User]
let count: Int?
let teamScore: Int
}
Here's the what I've started. This is my context.
struct AllTeamsContext: Encodable {
let title: String
let teams: [TeamWithUsers]
}
And I've created the Leaf template called "Leaders" which just shows a table with TeamWithUsers per row.
#if(count(teams) > 0) {
<table class="table table-bordered table-hover">
<thead class="thead-light">
<tr>
<th>Name</th>
<th>Icon</th>
<th>Score</th>
</tr>
</thead>
<tbody>
#for(team in teams) {
<tr>
<td>#(team.name)</td>
<td>#(team.icon)</td>
<td>#(team.teamScore)</td>
</tr>
}
</tbody>
</table>
} else {
<h2>There aren’t any teams yet.</h2>
}

Answer 1

EDIT: changed answer in the light of the additional information in the comments.
Whilst you could change your existing function to return the view directly, I personally would leave it as-is and call it from a second that renders the view. Try putting this in the same router as your current function:
func teamsView(_ req: Request) throws -> Future<View> {
let currentID = try req.parameters.next(Int.self)
let teamsContext = getTeamsWithUsersForEvent(request, currentID)
return request.view().render("Leaders", teamsContext )
}
Then, in your routes.swift or equivalent, put:
router.grouped("admin","teams") teamsRoute.get("leaders", Int.parameter, use: teamsView)
Move the parameter into the tsamsview function above and then you need to modify your original function header to be:
func getTeamsWithUsersForEvent(_ req: Request, _ currentID:Int) throws -> Future<[TeamWithUsers]>
Then remove your original parameter extraction from this function.
As your router is grouped your view should be visible on:
http://localhost:8080/admin/teams/nnn/leaders
where nnn is what will get translated into currentID.
ALTERNATIVELY:
If this is getting a bit messy (and in spite of my first comment about preferring to keep the functions separate), you could always alter your existing function to:
func getTeamsWithUsersForEvent(_ req: Request) throws -> Future<View> {
let currentID = try req.parameters.next(Int.self)
print("currentID \(currentID)")
let teamContext = Team.query(on: req).filter(\Team.eventID == currentID).sort(\Team.rawScore, .descending).range(..<5).all().flatMap(to: [TeamWithUsers].self) { team in
try team.map { team in
try team.users.query(on: req).all().map { users in
var score: Int
if users.isEmpty {
score = 0
} else {
score = team.rawScore / users.count
}
return TeamWithUsers(
id: team.id,
name: team.name,
icon: team.icon,
eventID: team.eventID,
rawScore: team.rawScore,
//users: users,
count: users.count,
teamScore: score
)
}
}.flatten(on: req)
}
return request.view().render("Leaders", teamContext )
}