Flutter规则验证插件zam_rules的使用

Flutter规则验证插件zam_rules的使用

zam_rules 是一个实用库，包含了一组最常用的规则。该库可以帮助开发者在Flutter应用中进行各种规则验证。

包含的内容

小数规则

• DecimalRangeRule
• LesserThanDecimalRule
• GreaterThanDecimalRule
• LesserThanOrEqualToDecimalRule
• GreaterThanOrEqualToDecimalRule
• PositiveDecimalRule

数字规则

• NumberRangeRule
• LesserThanNumberRule
• GreaterThanNumberRule
• PositiveNumberRule
• PositiveNumberRangeRule
• PercentNumberRule
• EightBitNumberRule
• ThirtyTwoBitNumberRule

文本规则

• TextStartsWithRule
• MatchOnePatternRule
• EndsWithPatternMatcherRule
• PatternMatcherRule
• RegexMatcherRule
• StartsWithPatternMatcherRule
• TextStartsWithRule

您可以在这里详细了解所有组件：详细信息

如何使用

以下是一个简单的示例，展示如何使用 TextStartsWithRule 进行文本验证：

import 'package:zam_rules/zam_rules.dart';

void main() {
  final text = 'Sony Xperia';
  final pattern = 'Sony';
  final rule = TextStartsWithRule(text, pattern, value: text);
  final ruleResponse = rule.execute();
  print(ruleResponse.isSuccess); // true
}

状态

贡献者

• Amsakanna

许可证

本项目采用 BSD 3-Clause License 许可证。

完整示例Demo

以下是一个完整的示例Demo，展示了如何使用多个规则进行验证：

import 'package:flutter/material.dart';
import 'package:zam_rules/zam_rules.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('zam_rules Example')),
        body: Center(
          child: RuleValidationExample(),
        ),
      ),
    );
  }
}

class RuleValidationExample extends StatefulWidget {
  [@override](/user/override)
  _RuleValidationExampleState createState() => _RuleValidationExampleState();
}

class _RuleValidationExampleState extends State<RuleValidationExample> {
  String text = 'Sony Xperia';
  String pattern = 'Sony';
  bool isTextValid = false;
  bool isNumberValid = false;

  void validateText() {
    final rule = TextStartsWithRule(text, pattern, value: text);
    final ruleResponse = rule.execute();
    setState(() {
      isTextValid = ruleResponse.isSuccess;
    });
  }

  void validateNumber() {
    final number = 123;
    final rule = PositiveNumberRule(number);
    final ruleResponse = rule.execute();
    setState(() {
      isNumberValid = ruleResponse.isSuccess;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        TextField(
          onChanged: (value) {
            setState(() {
              text = value;
            });
          },
        ),
        ElevatedButton(
          onPressed: validateText,
          child: Text('Validate Text'),
        ),
        Text(isTextValid ? 'Text is valid' : 'Text is invalid'),
        SizedBox(height: 20),
        ElevatedButton(
          onPressed: validateNumber,
          child: Text('Validate Number'),
        ),
        Text(isNumberValid ? 'Number is valid' : 'Number is invalid'),
      ],
    );
  }
}