Persistent data storage in Shiny apps documentation out of date

[woodward]

I'm working through this tutorial and I have a couple of problems.

https://shiny.rstudio.com/articles/persistent-data-storage.html

One minor correction is that rdrop2 seems to have changed and we now require filePaths <- filesInfo$path_lower

More difficult is the recent acquisition of MongoLab by MongoDB Altas. I haven't been able to get the mongolite example to work. I created a collection and database, as well as a read/write user. The primary host I got from MongoDB is "cluster0-3wvhd.mongodb.net" but I'm not sure if I need a port number.

options(mongodb = list(
	"host" = "cluster0-3wvhd.mongodb.net",
	"username" = "simon_woodward",
	"password" = "its_a_secret"
))
databaseName <- "myshinydatabase"
collectionName <- "responses"

	db <- mongo(collection = collectionName,
				url = sprintf(
					"mongodb+srv://%s:%s@%s/%s",
					options()$mongodb$username,
					options()$mongodb$password,
					options()$mongodb$host,
					databaseName))

# shiny app runs but doesn't work and gives
# Error: bad auth Authentication failed.

[woodward]

Fixed it! The above is correct but I had a typo in the loadData() function.