import-url {datamods}

Import data from a URL

Description

Let user paste link to a JSON then import the data.

Usage

import_url_ui(id, title = TRUE)

import_url_server(
  id,
  btn_show_data = TRUE,
  show_data_in = c("popup", "modal"),
  trigger_return = c("button", "change"),
  return_class = c("data.frame", "data.table", "tbl_df", "raw"),
  reset = reactive(NULL)
)

Arguments

id

Module's ID.

title

Module's title, if TRUE use the default title, use NULL for no title or a shiny.tag for a custom one.

btn_show_data

Display or not a button to display data in a modal window if import is successful.

show_data_in

Where to display data: in a "popup" or in a "modal" window.

trigger_return

When to update selected data: "button" (when user click on button) or "change" (each time user select a dataset in the list).

return_class

Class of returned data: data.frame, data.table, tbl_df (tibble) or raw.

reset

A reactive function that when triggered resets the data.

Value

• UI: HTML tags that can be included in shiny's UI

• Server: a list with three slots:

  • status: a reactive function returning the status: NULL, error or success.

  • name: a reactive function returning the name of the imported data as character.

  • data: a reactive function returning the imported data.frame.

Examples

library(shiny)
library(datamods)

ui <- fluidPage(
  tags$h3("Import data from URL"),
  fluidRow(
    column(
      width = 4,
      import_url_ui("myid")
    ),
    column(
      width = 8,
      tags$b("Import status:"),
      verbatimTextOutput(outputId = "status"),
      tags$b("Name:"),
      verbatimTextOutput(outputId = "name"),
      tags$b("Data:"),
      verbatimTextOutput(outputId = "data")
    )
  )
)

server <- function(input, output, session) {

  imported <- import_url_server(
    "myid",
    btn_show_data = FALSE,
    return_class = "raw"
  )

  output$status <- renderPrint({
    imported$status()
  })
  output$name <- renderPrint({
    imported$name()
  })
  output$data <- renderPrint({
    imported$data()
  })

}

if (interactive())
  shinyApp(ui, server)