54 lines
1.5 KiB
Dart
54 lines
1.5 KiB
Dart
import 'package:blog_app/models/common.dart';
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List<T> convertListResponse<T>(
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dynamic data,
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T Function(Map<String, dynamic>) fromJson,
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) {
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if (data is List) {
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return data.map((item) => fromJson(item as Map<String, dynamic>)).toList();
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}
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throw FormatException(
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'Expected a list of items for conversion, but got ${data.runtimeType}',
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);
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}
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PageResult<T> convertPageResponse<T>(
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dynamic data,
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T Function(Map<String, dynamic>) fromJson,
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) {
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if (data is Map<String, dynamic>) {
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return PageResult<T>.fromJson(
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data,
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(json) => fromJson(json as Map<String, dynamic>),
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);
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}
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throw FormatException(
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'Expected a Map for page response conversion, but got ${data.runtimeType}',
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);
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}
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/// 将数字格式化为中文单位（万/亿）
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String formatChineseDecimal(num number, {int decimalPlaces = 2}) {
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if (number < 10000) {
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return number.toString();
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} else if (number < 100000000) {
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// 万单位
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double result = number / 10000.0;
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return '${_formatDecimal(result, decimalPlaces)}万';
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} else {
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// 亿单位
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double result = number / 100000000.0;
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return '${_formatDecimal(result, decimalPlaces)}亿';
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}
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}
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String _formatDecimal(double number, int decimalPlaces) {
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// 去除末尾的0和小数点
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String formatted = number.toStringAsFixed(decimalPlaces);
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if (formatted.contains('.')) {
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formatted = formatted.replaceAll(RegExp(r'0*$'), '');
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formatted = formatted.replaceAll(RegExp(r'\.$'), '');
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}
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return formatted;
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}
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