Define filter related output in filtering panel — .render

The method exported only for custom extensions use.

Usage

.render_filter(filter, step_id, cohort, ns)

Arguments

filter: Filter object.
step_id: Id of the step.
cohort: Cohort object.
ns: Namespace function.

Value

A `shiny.tag` class `div` object defining html structure of filter input panel.

Examples

if (interactive()) {
  library(magrittr)
  library(shiny)
  library(cohortBuilder)
  library(shinyCohortBuilder)

  ui <- fluidPage(
    actionButton("add_filter", "Add Filter"),
    div(id = "filter_container")
  )

  server <- function(input, output, session) {
    add_gui_filter_layer <- function(public, private, ...) {
      private$steps[["1"]]$filters$copies$gui <- .gui_filter(
        private$steps[["1"]]$filters$copies
      )
    }
    add_hook("post_cohort_hook", add_gui_filter_layer)
    coh <- cohort(
      set_source(as.tblist(librarian)),
      filter(
        "range", id = "copies", name = "Copies", dataset = "books",
        variable = "copies", range = c(5, 12)
      )
    ) %>% run()
    coh$attributes$session <- session
    coh$attributes$feedback <- TRUE

    observeEvent(input$add_filter, {
      insertUI(
        "#filter_container",
        ui = .render_filter(
          coh$get_filter("1", "copies"),
          step_id = "1",
          cohort = coh,
          ns = function(x) x
        ))
    }, ignoreInit = TRUE, once = TRUE)
  }

  shinyApp(ui, server)
}