Incorperating this package as a dependency in another R package

[benyamindsmith]

I am using this package as a dependency for a personal project and I am struggling with how to incorperate this package dependency without having to put library(RPostgreSQL) in the function code.

For some context, the code that I uses connects to a PostgreSQL database hosted on the cloud and proceeds to preform some relevant queries.

My code:

database_func<- function(
    dsn_database,
    dsn_hostname,
    dsn_port,
    dsn_uid,
    dsn_pwd,
    ...) {

  tryCatch({
    drv <- dbDriver("PostgreSQL")
    print("Connecting to Database…")
    connec <- dbConnect(drv,
                        dbname = dsn_database,
                        host = dsn_hostname,
                        port = dsn_port,
                        user = dsn_uid,
                        password = dsn_pwd)
    print("Database Connected!")
  },
  error=function(cond) {
    print("Unable to connect to Database.")
  })

# REST OF CODE ....

}

If I don't call library(RPostgreSQL) before I utilize this function, the code breaks as the argument for dbDriver() is invalid.

I tried having RPostGreSQL listed in my package dependencies in my DESCRIPTION file but the problem still persists.