This function retrieves the book_id values from the input_data and saves them to a specified text file.
Examples
# Create sample data
books <- data.frame(title = c("Hamlet", "The Hunger Games", "Jane Eyre"),
book_id = c("1420", "2767052", "10210")
)
# Create a temporary file path
temp_file <- file.path(tempdir(), "bookids.txt")
# Run the function
get_book_ids(books, temp_file)
#> Book IDs saved to /tmp/Rtmp8flXPX/bookids.txt
# Clean up: remove the temporary file
file.remove(temp_file)
#> [1] TRUE