Make clear that you performed an action without having to refresh

[lcolladotor]

Received the following suggestion:

One small suggestion -- at the end of the form, you pick either submit or cancel, but I didn't see a clear "submit" "cancel" or "send form" button -- you just have to refresh the page, right?  Totally functional, but students might appreciate the peace of mind that it went...not sure if that's a big deal to add or not...just a thought.

[lcolladotor]

The part of having to reload to view the updated data had to do with the fact that loadReservations() is a reactive function. I made a non-reactive function loadReservationsFunc() [with the original code of loadReservations()] so that I could force the app to re-load the data when needed. The reactivity overview tutorial helped me with this http://rstudio.github.io/shiny/tutorial/#reactivity-overview.

For making clear that you performed an action, I modified the checkEntry() code and added an observer() to change the options for the "action" input.

My reply was:

I think that I managed to implement what you were suggesting (with drop down menus instead of buttons). Now, once you either cancel or reserve, the menu changes to reflect this. Also, you no longer need to reload to see the updated information. You now only strictly need to reload if you wish to perform another action (which should be very rare).