toJson method
Convert this object into a JSON object.
Implementation
Map<String, dynamic> toJson() {
return <String, dynamic>{
'activities': activities.map((Favorite a) => a.toJson()).toList(),
'books': books.map((Favorite b) => b.toJson()).toList(),
'interests': interests.map((Favorite i) => i.toJson()).toList(),
'movies': movies.map((Favorite m) => m.toJson()).toList(),
'television': television.map((Favorite t) => t.toJson()).toList(),
};
}