Trait/Object

org.scalatra

FlashMapSupport

Related Docs: object FlashMapSupport | package scalatra

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trait FlashMapSupport extends Handler

Allows an action to set key-value pairs in a transient state that is accessible only to the next action and is expired immediately after that. This is especially useful when using the POST-REDIRECT-GET pattern to trace the result of an operation.

post("/article/create") {
  // create session
  flash("notice") = "article created successfully"
  redirect("/home")
}
get("/home") {
  // this will access the value set in previous action
  stuff_with(flash("notice"))
}
Self Type
FlashMapSupport with ScalatraBase
See also

FlashMap

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Value Members

  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )

  6. final def eq(arg0: AnyRef): Boolean

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  7. def equals(arg0: Any): Boolean

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  8. def finalize(): Unit

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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )

  9. def flash(key: String)(implicit request: HttpServletRequest): Any

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  10. def flash(implicit request: HttpServletRequest): FlashMap

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    Returns the org.scalatra.FlashMap instance for the current request.

  11. def flashMapSetSession(f: FlashMap): Unit

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    Override to implement custom session retriever, or sanity checks if session is still active

  12. final def getClass(): Class[_]

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  13. def handle(req: HttpServletRequest, res: HttpServletResponse): Unit

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    Definition Classes
    FlashMapSupport → Handler

  14. def hashCode(): Int

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  15. final def isInstanceOf[T0]: Boolean

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  16. final def ne(arg0: AnyRef): Boolean

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  17. final def notify(): Unit

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  18. final def notifyAll(): Unit

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  19. def sweepUnusedFlashEntries(req: HttpServletRequest): Boolean

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    Determines whether unused flash entries should be swept.

    Determines whether unused flash entries should be swept. The default is false.

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    protected

  20. final def synchronized[T0](arg0: ⇒ T0): T0

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  21. def toString(): String

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  22. final def wait(): Unit

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    @throws( ... )

  23. final def wait(arg0: Long, arg1: Int): Unit

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  24. final def wait(arg0: Long): Unit

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Inherited from Handler

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