to_api_array function

Convert a vector to the array format expected by the REDCap API

Utility function to convert a vector into the array format expected by the some REDCap API calls. It is called internally by REDCapR functions, and is not intended to be called directly.

to_api_array(x, element_names)

Arguments

• x: A vector to convert to array format. Can be NULL.
• element_names: A string containing the name of the API request parameter for the array. Must be either "fields" or "forms".

Returns

If x is not NULL a list is returned with one element for each element of x in the format: list(`element_names[0]` = x[1], `element_names[1]` = x[2], ...).

If x is NULL then NULL is returned.