check_data_arg_exists function

Check requested data argument exists in REDCap data

Provide an error message when an argument is requested, but is not found in any read_redcap() redcap_data output.

check_data_arg_exists(db_data, col, arg, call = caller_env())

Arguments

• db_data: The REDCap database output generated by REDCapR::redcap_read_oneshot()$data
• col: The column to check for in redcap_data
• arg: The argument used for the column check
• call: The calling environment to use in the error message

Returns

An error message saying the requested data does not exist

Details

Currently used for the following arguments:

• export_survey_fields: *_timestamp
• export_data_access_groups: redcap_data_access_group