Setting a "Reset Values" button on Shiny - r

Question

I have put together a Shiny app that reactively creates lists while simultaneously removing those selections from the list you're selecting from. I'm trying to put together a feature where you click a reset button and it does the following:
1.) Deselects all input options
2.) Sets the Age Range to 18 - 104 (so it captures all values)
3.) Moves the other two sliders to zero
I'm trying to use the shinyjs::reset function, but it doesn't appear to be working. Take a look:
df <- read.csv('https://raw.githubusercontent.com/gooponyagrinch/sample_data/master/datasheet.csv')
library(shiny)
library(shinyWidgets)
library(shinyjs)
library(tidyverse)
library(DT)
ui <- fluidPage(
div(id = "myapp",
fluidRow(
column("",
width = 10, offset = 1,
tags$h3("Select Area"),
panel(
sliderInput("current", "Current Score",
min = 0, max = 100, value = 20),
sliderInput("projected", "Projected Score",
min = 0, max = 100, value = 20),
sliderInput("age", "Age",
min = 18, max = max(df$age), value = c(18,24)),
checkboxGroupInput("ethnicity",label = "Ethnicity",
choices = list("Caucasian"="Caucasian",
"African-American"="African-American",
"Hispanic"="Hispanic",
"Other"="Other")),
checkboxInput('previous', label = "Previous Sale"),
checkboxInput('warm', label = "Warm Lead"),
actionButton("button", "Add to List"),
actionButton("reset", "Reset form")),
textOutput("counter"),
tags$h2("Data to filter"),
DT::dataTableOutput("table"),
tags$h2("IDs added to list"),
DT::dataTableOutput("addedToList")
)
)
)
)
server <- function(input, output, session) {
filterData = reactiveVal(df %>% mutate(key = 1:nrow(df)))
addedToList = reactiveVal(data.frame())
filtered_df <- reactive({
res <- filterData() %>% filter(current_grade >= input$current)
res <- res %>% filter(projected_grade >= input$projected)
res <- res %>% filter(age >= input$age[1] & age <= input$age[2])
res <- res %>% filter(ethnicity %in% input$ethnicity | is.null(input$ethnicity))
if(input$previous == TRUE)
res <- res %>% filter(previous_sale == 1)
if(input$warm == TRUE)
res <- res %>% filter(warm_lead == 1)
res
})
output$counter <- renderText({
res <- filtered_df() %>% select(customer_id) %>% n_distinct()
res
})
output$table <- renderDataTable({
res <- filtered_df() %>% distinct(customer_id)
res
})
observeEvent(input$button, {
addedToList(rbind(addedToList(),
filterData() %>% filter(key %in% filtered_df()$key) %>%
select(customer_id) %>% distinct() ))
filterData(filterData() %>% filter(!key %in% filtered_df()$key))
})
observeEvent(input$reset, {
shinyjs::reset("myapp")
})
output$addedToList <- renderDataTable({
addedToList()
})
}
shinyApp(ui,server)
Am I missing something?

Answer 1

All you need to do is ensure that your application is listening for a call to "ShinyJS" in your application. In the UI, add the useShinyJS() call!
ui <- fluidPage(
useShinyJS()
div(id = "myapp",
fluidRow(...)
)
I also should note this looks like a repeat of this question. 'Reset inputs' button in shiny app