parseCategories function
Implementation
List<Category>? parseCategories(dynamic data) {
if (data is String) {
return jsonDecode(data)
.cast<Map<String, dynamic>>()
.map<Category>((json) => Category.fromMap(json))
.toList();
} else {
return data
.cast<Map<String, dynamic>>()
.map<Category>((json) => Category.fromMap(json))
.toList();
}
}