Vapor 4 Utilities

EventLoopFuture+tryFlatMap.swift

import NIO

/// Author: vzsg (Discord) - https://twitter.com/vzsg_dev
/// Source: https://discordapp.com/channels/431917998102675485/684159753189982218/684537099378098272
extension EventLoopFuture {

  func tryFlatMap<NewValue>(
    file: StaticString = #file,
    line: UInt = #line,
    _ callback: @escaping (Value) throws -> EventLoopFuture<NewValue>
  ) -> EventLoopFuture<NewValue> {
    return flatMap(file: file, line: line) { result in
      do {
        return try callback(result)
      } catch {
        return self.eventLoop.makeFailedFuture(error, file: file, line: line)
      }
    }
  }
}

ViewRenderer+AsyncContext.swift

import Vapor

extension ViewRenderer {
    public func render<E>(_ name: String, _ context: EventLoopFuture<E>) -> EventLoopFuture<View>
        where E: Encodable
    {
        context.flatMap { context in
            self.render(name, context)
        }
    }
}