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@wsc-tech/wsc-taro-form

v0.2.4

Published

仿照 ant design 的form设计的taro表单

Downloads

6

Readme

taro-form

NPM version NPM downloads MIT Licence

仿照 ant design 的form设计的taro表单,理论上和taro保持一致的兼容性,目前已验证微信小程序和h5

使用方式

  1. 直接在项目中按如下方式引入
import Form, { FormSwitch, ... } from 'fe-taro-form';
import 'fe-taro-form/dist/index.css';
...
<Form ref={formRef} initialValues={{switch: true}}>
...
  <Form.Item label='FormSwitch' name='switch'>
    <FormSwitch />
  </Form.Item>
...
</Form>
...
  1. 配置需要额外的经由 Taro 预设的 postcss 编译的模块。
module.exports = {
  // ...
  h5: {
    // ...
    // 经过这一配置之后,代码中引入的处于 `node_modules/fe-taro-form/` 路径下的样式文件均会经过 postcss 的编译处理。
    esnextModules: ['fe-taro-form']
  }
}

class 组件及 function 组件各自获取ref的方式

1. class 组件

import React, { Component, createRef } from 'react';
...
constructor(props) {
  super(props);
  this.formRef= createRef();
}
...
<Form ref={this.formRef}>...</Form>

2. function 组件

import React, { useRef } from 'react';
...
const formRef = useRef();
...
<Form ref={formRef}>...</Form>
...

API

Form

| 参数 | 说明 | 类型 | 默认值 | | --- | --- | --- | --- | | ref | form 控制实例 | FormInstance | - | | initialValues | 表单默认值,只有初始化以及重置时生效 | object | - | | onFieldsChange | 字段更新时触发回调事件 | function(changedFields) | - |

Form.Item

表单字段组件,用于数据双向绑定、校验、布局等。

| 参数 | 说明 | 类型 | 默认值 | | --- | --- | --- | --- | | name | 字段名 | string | - | | label | label 标签的文本 | ReactNode | - | | getValueFromEvent | 设置如何将 event 的值转换成字段值 | (..args: any[]) => any | - | | required | 必填样式设置。如不设置,则会根据校验规则自动生成 | boolean | false | | rules | 校验规则,设置字段的校验逻辑。 | Rule[] | - | | validateTrigger | 设置字段校验的时机 | onBlur,onChange | onBlur |

被设置了 name 属性的 Form.Item 包装的控件,表单控件会自动添加 value , onChange(或 validateTrigger 指定的其他属性),数据同步将被 Form 接管,这会导致以下结果:

  1. 不再需要也不应该onChange 来做数据收集同步(你可以使用 Form 的 onFieldsChange), onChange组件内部覆盖
  2. 你不能用控件的 valuedefaultValue 等属性来设置表单域的值,默认值可以用 Form 里的 initialValues 来设置。注意 initialValues 不能被 setState 动态更新,你需要用 setFieldValue 来更新。
  3. 你不应该用 setState,可以使用 form.setFieldValue 来动态改变表单值。

FormInstance

| 名称 | 说明 | 类型 | | --- | --- | --- | | getFieldValue | 获取对应字段名的值 | (name: string) => any | | getFieldsValue | 获取所有字段名的值 | () => any | | setFieldValue | 设置对应字段名的值 | (name: string, value: any) => void | | | setFieldsValue | 设置表单的值。如果你只想修改 Form.List 中单项值,请通过 setFieldValue 进行指定 | (values) => void | | validateField | 校验指定子组件域 | () => Promise | | validateAllFields | 校验表单所有子项 | () => Promise | | resetFields | 重置一组字段到 initialValues | () => void |

Rule

Rule 支持接收 object 进行配置,也支持 function 来动态获取 form 的数据:
更多请参考此处

| 名称 | 说明 | 类型 | | --- | --- | --- | | defaultField | 仅在 typearray 类型时有效,用于指定数组元素的校验规则 | rule | | enum | 是否匹配枚举中的值(需要将 type 设置为 enum) | any[] | | fields | 仅在 typearrayobject 类型时有效,用于指定子元素的校验规则 | Record<string, rule> | | len | string 类型时为字符串长度;number 类型时为确定数字; array 类型时为数组长度 | number | | max | 必须设置 type:string 类型为字符串最大长度;number 类型时为最大值;array 类型时为数组最大长度 | number | | message | 错误信息,不设置时会通过模板自动生成 | string | | min | 必须设置 type:string 类型为字符串最小长度;number 类型时为最小值;array 类型时为数组最小长度 | number | | pattern | 正则表达式匹配 | RegExp | | required | 是否为必选字段 | boolean | | transform | 将字段值转换成目标值后进行校验 | (value) => any | | type | 类型,常见有 string |number |boolean |url | email。 | string | | validateTrigger | 设置触发验证时机,必须是 Form.Item 的 validateTrigger 的子集 | string | string[] | | validator | 自定义校验,接收 Promise 作为返回值。示例参考 | (rule, value) => Promise | | whitespace | 如果字段仅包含空格则校验不通过,只在 type: 'string' 时生效 | boolean |

使用示例详见 src/pages 目录下