Hello. I want to access the "fields" and "values" of a Custom Data Type within a Custom Action using an argument.
In the Custom Action, I am fetching data from Firebase. The data from Firebase includes Map data, so I am utilizing a Custom Data Type (named "Translation") for it. Example: TranslationStruct({en: AAA, ja: BBB})
I'd like to return the value if the variable matches the field, and return "OTHER" if the variable doesn't have the field.
In this case, when I tried the following code, an error occurred:
Future<NewsDataTypeStruct> newsCustomAction(
List<NewsRecord> newsCollection,
String currentLang,
) async {
// Add your function code here!
String title;
if (newsRecord.title != null && newsRecord.title[currentLang] != null) {
title = newsRecord.title[currentLang];
} else {
title = "OTHER";
}
NewsDataTypeStruct newsData = NewsDataTypeStruct(
title: title,
);
return newsData;
}Error:
The operator '[]' isn't defined for the type 'TranslationStruct'. Try defining the operator '[]'.newsRecord.title[currentLang] -> newsRecord.title.currentLang Error:
The getter 'currentLang' isn't defined for the type 'TranslationStruct'. Try importing the library that defines 'currentLang', correcting the name to the name of an existing getter, or defining a getter or field named newsRecord.title[currentLang] -> newsRecord.title.[currentLang]Error:
Expected an identifier.
The getter '[' isn't defined for the type 'TranslationStruct'. Try importing the library that defines '[', correcting the name to the name of an existing getter, or defining a getter or field named '['.
Do you have any ideas to solve this?
Thank you!