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@wxa/validate

v2.5.1

Published

form plugin for wxa

Downloads

33

Readme

wxa-validate表单校验

wxa-validate参照了vee-validate的实现思路在wxa内提供了便捷的表单校验功能

安装

  • yarn

yarn add @wxa/validate

  • npm

npm i @wxa/validate --save

在app.js文件中引入

import {
    wxa
} from '@wxa/core';
import WxaValidate from '@wxa/validate';

wxa.use(WxaValidate);

在具体页面中使用

引入wxa-validate之后,在页面里中可以直接通过this.func的格式使用入以下属性和方法:

|名称|类型|作用| |------|-----|-----| |$form|属性|{    dirty: false, // 用户是否有接触表单     valid: { //已经校验的表单信息        name: true // 表单中data-name的输入框输入值符合要求    }    errMsgs: ['请输入name'] // 用于反显给用户的错误信息}可以在开发者工具中AppData页卡查看完整数据| |$type|方法|更新对应value,如下面代码中由于data-name="name",用户输入之后该方法会直接更新this.data.name的值| |$typeAndValidate|方法|1、执行$type更新对应value;2、执行规则校验| |$validate|方法|校验某个input的输入值,如在页面中执行this.$validate('name')会去校验data-name="name"的输入框值,返回结果为true或者false| |$validateAll|方法|通常用于最后的表单提交,方法会返回一个promise|

原生微信input元素使用wxa-validate示例:

<input
    class="wxa-input"
    type="text"
    maxlength="20"
    placeholder="请填写姓名"
    placeholder-class="psection"
    value="{{name}}"
    data-name="name"
    data-rule="required|username"
    bindinput="$typeAndValidate"
    bindfocus="$clearErrorMsg"
    bindblur="$validate"/>

<view class="item-error" wx:if="{{$form.dirty && !$form.valid.name}}">请填写有效中文姓名</view>

原生微信picker元素使用wxa-validate示例:

<picker
    class="item-picker wxa-input"
    mode="selector"
    range="{{genderList}}"
    value="{{gender}}"
    data-name="gender"
    data-rule="required"
    bindchange="$typeAndValidate">
        <view class="picker-text">{{filter.gender(gender) || '请选择性别'}}</view>
</picker>

<view class="item-error" wx:if="{{$form.dirty && !$form.valid.gender}}">请选择性别</view>

注意:所有需要使用wxa-validate做校验的input、picker等元素的class属性必须包含有wxa-input

提交表单信息示例:

this.$validateAll().then(res => {
    if (res.valid) {
        ...
    }
}, err => {
    console.warn(err);
});

模版中使用插件

<input value='{{pwdConfirme}}' data-rule="required|password|weakPwd|confirmed:.confirmed" data-name="pwdConfirme" bindinput="$validate"type="number" maxlength="6"/>
</view>
<view wx:if="{{$form.errMap['pwdConfirme'].password}}">交易密码格式不对,请重新输入</view>
<view wx:elif="{{$form.errMap['pwdConfirme'].weakPwd}}">交易密码过于简单,请重新输入</view>
<view wx:elif="{{$form.errMap['pwdConfirme'].confirmed}}">两次密码不一致,请重新输入</view>

上面代码中input使用了4个校验规则:required、password、weakPwd、confirmed。

其中confirmed规则带了参数.confirmed,插件会获取(wx.createSelectorQuery().select('.confirmed'))对应组件的值作比较。