shinyalert | 🗯️ Easily create pretty popup messages (modals) in Shiny | Data Visualization library

I have a shiny app for uploading CSV file. I used the function sendSweetAlert from shinyWidgets package to send custom message but I would like to reload the page when user clik on "Ok" button

I tried to use shinyalert from shinyalert package but i dont get the desired result.

This is what I did :

In the app below when the user does not upload a .xls file I want a pop up to be displayed. Now it appears only in the beginning but if upload another lets say doc file it is hidden. I do not care it is with shinyalert package or other method.

I have created a modal that is activated when the app is launched and warns the user that he first needs to upload an excel file. But when I upload it the modal is displayed again which seems to be wrong.

My shinyapp is build using modules, the radioBox component inputId = modelling_type is created in the server, using a renderUI function and stored under outputId = modelling_type_ui

As I'm using modules, I have name spaced my IDs in the mod_ui, and then in order to (attempt!) to use the same name space function in the mod_server I have called it via ns <- parentsession$ns. This doesn't throw an error. But I would now expect to access the value of the RadioBox via input$modelling_type

This isn't working! So I must be calling the value incorrectly.

Here is the code:

I have created a survey in Shiny and I would like that the options in this survey are always different. To do so, I have used the sample function and each time I run the app on my local machine the possible options for the answers are always different as I want. However, I have recently deployed the app through shinyapps.io and it seems that the there is no more randomness in the possible options. This is the code of my shiny app :

I am writing an app that will be used to copy large numbers of photos (often tens of thousands at a time) from SD cards to external hard drives, which people will be running in the background while they do other work. I want to notify the user when the file copying is finished so they don't have to keep checking the app. I have used shinyalert() in the past, and I am also aware of using javascript functions to send alerts as well (this is the one I found:

Very new to Shiny here, I have a module like the one below where I just want 2 SelectizeInput menus with the same options each.

The trick is that they have to be mutually exclusive, so I understand I have to use updateSelectizeInput to update the selected options in one menu based on the selected options in the other.

This should work in such a way that if I select one option in one menu, it has to be removed from the selected options in the other menu, and vice versa.

I understand the moving pieces here, but I am not sure where to place them and how to finally accomplish this.

This is what I have so far:

Over the last couple weeks I've been experimenting using shinyalert() to explore the potential of using inputs within an alert and trigger a chain shinyalert() if inputs are not left blank. There a couple of things that are high priority in my mind:

1: I need to cancel the chained modal if the cancel button is selected. I believe I have this part figured out.

2: If any inputs within the shinyalert are left blank, I also need to cancel the chained modal.

The below code seems to function on first use but it quickly becomes evident that it keeps variables in memory (not sure if this is correct terminology) for some reason that I cannot figure out:

I am trying to make a Shiny app using golem, but I am very new to this, and tried to do something I thought simple, but turns out it is not.

In my app_ui.R file I have a tab structure like this: