Get the keys of a parameterised page

A page declared with a parameterised href (e.g. "/who/:id") exposes the values matched in the URL through get_keys(). Call it with no argument inside a page server, and pass it the request inside a page ui.

Usage

get_keys(x = shiny::getDefaultReactiveDomain())

Arguments

x

A shiny session, or the request object a page ui receives. Defaults to the session the code is running in.

Value

A named list of the values matched in the page href, or NULL outside of a brochure page.

Examples

library(shiny)
page(
  href = "/who/:id",
  ui = function(request) {
    h1(get_keys(request)$id)
  },
  server = function(input, output, session) {
    print(get_keys())
  }
)
#> $href
#> [1] "/who/:id"
#> 
#> $ui
#> function (request) 
#> {
#>     h1(get_keys(request)$id)
#> }
#> <environment: 0x5648cda54c50>
#> 
#> $server
#> function (input, output, session) 
#> {
#>     print(get_keys())
#> }
#> <environment: 0x5648cda54c50>
#> 
#> $method
#> [1] "get"
#> 
#> $req_handlers
#> list()
#> 
#> $res_handlers
#> list()
#> 
#> attr(,"class")
#> [1] "brochure_page" "list"