88 lines
2.3 KiB
Dart
88 lines
2.3 KiB
Dart
// lib/models/book.dart
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import 'package:flutter/foundation.dart';
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// --- 新增的辅助函数 ---
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// 这个函数能安全地将任何动态类型的值转换为整数。
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int _parseInt(dynamic value) {
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if (value == null) return 0;
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if (value is int) return value;
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if (value is String) {
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return int.tryParse(value) ?? 0;
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}
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// 如果是其他类型（如 double），可以先转为数字再取整
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if (value is num) {
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return value.toInt();
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}
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return 0;
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}
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class Book {
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final String bookId;
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final String title;
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final String author;
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final String intro;
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final int wordsNum;
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final String tags;
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final String imgUrl;
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final List<BookChapter> catalog;
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Book({
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required this.bookId,
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required this.title,
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required this.author,
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required this.intro,
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required this.wordsNum,
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required this.tags,
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required this.imgUrl,
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this.catalog = const [],
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});
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factory Book.fromJson(Map<String, dynamic> json) {
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var bookData = json['data']['book'];
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List<dynamic> tagList = bookData['book_tag_list'] ?? [];
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return Book(
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// --- 这里是修改点 ---
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bookId: bookData['id']?.toString() ?? '', // 确保ID即使为null也不会崩溃
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title: bookData['title'] ?? '未知标题',
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author: bookData['author'] ?? '未知作者',
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intro: bookData['intro'] ?? '暂无简介',
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// --- 使用了安全的解析函数 ---
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wordsNum: _parseInt(bookData['words_num']),
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tags: tagList.map((tag) => tag['title']).join(', '),
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imgUrl: bookData['image_link'] ?? '',
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);
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}
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Book copyWith({List<BookChapter>? catalog}) {
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return Book(
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bookId: this.bookId,
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title: this.title,
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author: this.author,
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intro: this.intro,
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wordsNum: this.wordsNum,
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tags: this.tags,
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imgUrl: this.imgUrl,
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catalog: catalog ?? this.catalog,
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);
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}
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}
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class BookChapter {
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final String id;
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final String title;
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final int sort;
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BookChapter({required this.id, required this.title, required this.sort});
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factory BookChapter.fromJson(Map<String, dynamic> json) {
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return BookChapter(
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// --- 这里是修改点 ---
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id: json['id']?.toString() ?? '',
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title: json['title'] ?? '未知章节',
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// --- 使用了安全的解析函数 ---
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sort: _parseInt(json['chapter_sort']),
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);
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}
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} |