Is there a way to call input$ from another file other than ui and server

Hi all,

I wanted to check if we can call input$ from any other R file other than ui.R and server.R?

app.R

library(shinydashboard)
library(shiny)
library(dplyr)
source("fun.R")

ui <- selectInput("beverage", "Choose a beverage:", choices = unique(df$a)),
uiOutput("sd")

server <- function(input, output, session) {
output$sd <- renderUI({
    selectInput("beverage1", "Choose a beverage:", choices = df()$b)
  })
}

fun.R

library(dplyr)
library(shiny)
source("app.R")

df <- data.frame(a = c("Tea", "Coffee", "Cocoa","Tea", "Coffee", "Cocoa"), b = c(1,2,3,4,5,6))

df_fil <- function(){
  df[df$a == input$beverage,]
}

I suppose you could use modules and call them from other modules.

https://shiny.rstudio.com/articles/modules.html