Making a Leaderboard in R Shiny - r

Question

I am attempting to make a leaderboard in R Shiny for my school where users could submit their name, teacher's name, and their score in textInputs by clicking an actionButton. I am having trouble with the following:
a) Making the textInputs submit on the push of the actionButton (I know I should use the isolate function, but have no idea where/when/how)
b) Storing the info the user inputs with the data frame so that when the app opens on a second device it still shows the info the first person uses
My code is below:
### Libraries
library('tidyverse')
library('readxl')
library('shiny')
library('DT')
# Define UI
ui <- fluidPage(
# Application title
titlePanel("Scoreboard"),
# Sidebar
sidebarLayout(
sidebarPanel(
h5("Sidebar Text"),
),
# Main Panel
mainPanel(
tabsetPanel(type = "tabs",
tabPanel("Add Score",
textInput("name_input", "Insert Your Name Below"), textInput("teacher_input", "Insert Your Teacher's Last Name Below"),
textInput("score_input", "Insert Your Score Below"),
actionButton("sumbit_button", "Click Button to Submit!")
),
tabPanel("ScoreBoard", dataTableOutput("score_table"))
)
)
)
)
# Define server logic
server <- function(input, output) {
# Read In Sample Scores as a base dataframe to add user inputs to.
scores <- read_excel("Sample_Scores.xlsx")
scores <- scores[order(scores$Scores, decreasing = FALSE),]
names(scores) <- c("Score", "Name", "Teacher")
output$score_table <- renderDataTable({
new_score <- input$score_input
new_name <- input$name_input
new_teacher <- input$teacher_input
new_student <- c(new_score, new_name, new_teacher)
scores <- rbind(scores, new_student)
})
}
# Run the application
shinyApp(ui = ui, server = server)

Answer 1

Figured it out. The best solution was to read in the df as a csv every time I open the app and then write the info back to a csv every time a score is added to the scoreboard.