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play.api.mvc

ActionFunction

trait ActionFunction[-R[_], +P[_]] extends AnyRef

A builder for generic Actions that generalizes over the type of requests. An ActionFunction[R,P] may be chained onto an existing ActionBuilder[R] to produce a new ActionBuilder[P] using andThen. The critical (abstract) function is invokeBlock. Most users will want to use ActionBuilder instead.

R

the type of the request on which this is invoked (input)

P

the parameter type which blocks executed by this builder take (output)

Self Type
ActionFunction[R, P]
Source
Action.scala
Linear Supertypes
AnyRef, Any
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Abstract Value Members

  1. abstract def invokeBlock[A](request: R[A], block: (P[A]) => Future[Result]): Future[Result]

    Invoke the block.

    Invoke the block. This is the main method that an ActionBuilder has to implement, at this stage it can wrap it in any other actions, modify the request object or potentially use a different class to represent the request.

    request

    The request

    block

    The block of code to invoke

    returns

    A future of the result

Concrete Value Members

  1. def andThen[Q[_]](other: ActionFunction[P, Q]): ActionFunction[R, Q]

    Compose this ActionFunction with another, with this one applied first.

    Compose this ActionFunction with another, with this one applied first.

    other

    ActionFunction with which to compose

    returns

    The new ActionFunction

  2. def compose[B](other: ActionBuilder[R, B]): ActionBuilder[P, B]
  3. def compose[Q[_]](other: ActionFunction[Q, R]): ActionFunction[Q, P]

    Compose another ActionFunction with this one, with this one applied last.

    Compose another ActionFunction with this one, with this one applied last.

    other

    ActionFunction with which to compose

    returns

    The new ActionFunction