Book.fromJson constructor
Implementation
factory Book.fromJson(Map<String, dynamic> json) {
var bookData =
(json['book'] as List).map((data) => BookData.fromJson(data)).toList();
return Book(
bookNumber: json['bookNumber'],
book: bookData,
hadithStartNumber: json['hadithStartNumber'],
hadithEndNumber: json['hadithEndNumber'],
numberOfHadith: json['numberOfHadith'],
);
}