fix: correct data loading

modules/data_manipulations.R

@@ -4,7 +4,8 @@
 #' not 'empty').
 #'
 #' Needed for proper data validation.
-check_for_empty_data = function(value_to_check) {
+#' @export
+is_this_empty_value = function(value_to_check) {
 
   # for any 0-length
   if (length(value_to_check) == 0) return(TRUE)
@@ -19,7 +20,14 @@ check_for_empty_data = function(value_to_check) {
   if (inherits(value_to_check, "Date") && length(value_to_check) != 0) return(FALSE)
 
   # for empty strings (stands before checking non-empty data for avoid mistakes)
-  if (value_to_check == "") return(TRUE)
+  if (is.character(value_to_check)) {
+    if (is.na(value_to_check)) return(TRUE)
+    if (value_to_check == "")   return(TRUE)
+  }
 
-  FALSE
+  if (is.double(value_to_check)) {
+    if (is.na(value_to_check)) return(TRUE)
+  }
+
+  return(FALSE)
 }