Check that information submitted by students through UI is correct

Source: R/check_metadata.R

This function takes the metadata submitted by a student (Name, ID, Password) and checks it against information in the grade tracking list to ensure that student is present and the submitted information valid

check_metadata(metadata, studentlist)

Arguments

metadata

list containing elements StudentID and Password

studentlist

Data frame containing the student list

Value

An error message if user input is not valid otherwise NULL