loginUI: login UI module

In shinyauthr: 'Shiny' Authentication Modules

Description

Shiny UI Module for use with loginServer

Usage

loginUI(
  id,
  title = "Please log in",
  user_title = "User Name",
  pass_title = "Password",
  login_title = "Log in",
  error_message = "Invalid username or password!",
  additional_ui = NULL,
  cookie_expiry = 7
)

Arguments

id	An ID string that corresponds with the ID used to call the module's server function
title	header title for the login panel
user_title	label for the user name text input
pass_title	label for the password text input
login_title	label for the login button
error_message	message to display after failed login
additional_ui	additional shiny UI element(s) to add below login button. Wrap multiple inside shiny::tagList()
cookie_expiry	number of days to request browser to retain login cookie

Value

Shiny UI login panel with user name text input, password text input and login action button.

Examples

library(shiny)

# dataframe that holds usernames, passwords and other user data
user_base <- dplyr::tibble(
  user = c("user1", "user2"),
  password = c("pass1", "pass2"),
  permissions = c("admin", "standard"),
  name = c("User One", "User Two")
)

ui <- fluidPage(
  # add logout button UI
  div(class = "pull-right", shinyauthr::logoutUI(id = "logout")),
  # add login panel UI function
  shinyauthr::loginUI(id = "login"),
  # setup table output to show user info after login
  tableOutput("user_table")
)

server <- function(input, output, session) {
  # call login module supplying data frame, 
  # user and password cols and reactive trigger
  credentials <- shinyauthr::loginServer(
    id = "login",
    data = user_base,
    user_col = user,
    pwd_col = password,
    log_out = reactive(logout_init())
  )
  
  # call the logout module with reactive trigger to hide/show
  logout_init <- shinyauthr::logoutServer(
    id = "logout",
    active = reactive(credentials()$user_auth)
  )
  
  output$user_table <- renderTable({
    # use req to only render results when credentials()$user_auth is TRUE
    req(credentials()$user_auth)
    credentials()$info
  })
}

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

shinyauthr documentation built on July 20, 2021, 9:07 a.m.