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
Linear Supertypes
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- def flash(key: String)(implicit request: HttpServletRequest): Any
- def flash(implicit request: HttpServletRequest): FlashMap
Returns the org.scalatra.FlashMap instance for the current request.
- def flashMapSetSession(f: FlashMap): Unit
Override to implement custom session retriever, or sanity checks if session is still active
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- def handle(req: HttpServletRequest, res: HttpServletResponse): Unit
Handles a request and writes to the response.
Handles a request and writes to the response.
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- def sweepUnusedFlashEntries(req: HttpServletRequest): Boolean
Determines whether unused flash entries should be swept.
Determines whether unused flash entries should be swept. The default is false.
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