parameterMap

Signature

def parameterMap: Directive1[Map[String, String]]

Description

Extracts all parameters at once as a Map[String, String] mapping parameter names to parameter values.

If a query contains a parameter value several times, the map will contain the last one.

See also When to use which parameter directive? to understand when to use which directive.

Example

val route =
  parameterMap { params =>
    def paramString(param: (String, String)): String = s"""${param._1} = '${param._2}'"""
    complete(s"The parameters are ${params.map(paramString).mkString(", ")}")
  }

// tests:
Get("/?color=blue&count=42") ~> route ~> check {
  responseAs[String] shouldEqual "The parameters are color = 'blue', count = '42'"
}
Get("/?x=1&x=2") ~> route ~> check {
  responseAs[String] shouldEqual "The parameters are x = '2'"
}