queryValue function
Para valores
Implementation
String queryValue(dynamic input) {
if (input is int || input is double) {
return input.toString();
}
if (input == null) {
return 'null';
}
if (input is List) {
input = jsonEncode(input);
}
if (input is Map) {
input = jsonEncode(input);
}
String str = (input as String).replaceAll("'", "''");
return "'$str'";
}