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Answer a Vue component that asked the server

Source: R/vue_server.R
vue_answer.Rd

A component that needs the server – a lazy tree its children, a remote search its matches – asks with shinyVue.ask(input, question) in the browser: the question arrives as an input, with a request number, and the component waits for the answer. This sends it, or refuses (failed), which rejects the component's promise.

Usage

vue_answer(
  session = shiny::getDefaultReactiveDomain(),
  id,
  request,
  value = NULL,
  failed = FALSE
)

Arguments

session

Shiny session; the current one by default, as for shiny::updateTextInput().

id

The component's id (un-namespaced).

request

The question as it arrived, or its request number.

value

The answer.

failed

TRUE to refuse the request instead.

Value

Called for its side effect; returns NULL invisibly.

See also

vue_app().

Examples

if (interactive()) {
  # inside a server function: a component asked input$places_query
  observeEvent(input$places_query, {
    q <- input$places_query
    vue_answer(
      id = "places",
      request = q,
      value = grep(q$text, cities, value = TRUE)
    )
  })
}