Akka-http Extensions

akka-http-extensions its a simple library with useful tools for develop web apps with Akka-http.

This is an updated project that uses Akka-http instead of Spray: https://github.com/Jarlakxen/spray-extensions

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"com.lonelyplanet" %% "akka-http-extensions" % "0.4.4"

Changelog

0.4

• Fallback to default limit and offset parameters in case they are missing

0.3

• Pagination support

Features

Pagination Support

The trait PaginationDirectives offers some helpers for handling pagination:

path("filter-test") {
  withOptionalPagination { page =>
    complete {
      page match {
        case Some(page) => ... // A page was requested
        case None => ... // No page was requested
      }
    }
  }
}

Alternatively you can use:

path("filter-test") {
  withPagination { page =>
    complete {
      // page is always set
    }
  }
}

The page object has this format

sealed trait Order

object Order {
  case object Asc extends Order
  case object Desc extends Order
}

case class PageRequest(index: Int, size: Int, sort: Map[String, Order])

This is an example of url: /filter-test?page=1&size=10 or /filter-test?page=1&size=10&sort=name,asc;age,desc

The name of the parameters can be configured through Typesafe Config:

akka.http {
    extensions {
        pagination{
            index-param-name = "page"
            size-param-name  = "size"
            sort-param-name  = "sort"
            asc-param-name   = "asc"
            desc-param-name  = "desc"
            sorting-separator = ";"
            order-separator  = ","
            defaults {
                enabled = true
                always-fallback = true
                offset = 10
                limit = 10
            }
        }
    }
}