You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
215 lines
7.2 KiB
215 lines
7.2 KiB
2 years ago
|
<template>
|
||
|
<view class="u-form">
|
||
|
<slot />
|
||
|
</view>
|
||
|
</template>
|
||
|
|
||
|
<script>
|
||
|
import props from "./props.js";
|
||
|
import Schema from "../../libs/util/async-validator";
|
||
|
// 去除警告信息
|
||
|
Schema.warning = function() {};
|
||
|
/**
|
||
|
* Form 表单
|
||
|
* @description 此组件一般用于表单场景,可以配置Input输入框,Select弹出框,进行表单验证等。
|
||
|
* @tutorial https://www.uviewui.com/components/form.html
|
||
|
* @property {Object} model 当前form的需要验证字段的集合
|
||
|
* @property {Object | Function | Array} rules 验证规则
|
||
|
* @property {String} errorType 错误的提示方式,见上方说明 ( 默认 message )
|
||
|
* @property {Boolean} borderBottom 是否显示表单域的下划线边框 ( 默认 true )
|
||
|
* @property {String} labelPosition 表单域提示文字的位置,left-左侧,top-上方 ( 默认 'left' )
|
||
|
* @property {String | Number} labelWidth 提示文字的宽度,单位px ( 默认 45 )
|
||
|
* @property {String} labelAlign lable字体的对齐方式 ( 默认 ‘left' )
|
||
|
* @property {Object} labelStyle lable的样式,对象形式
|
||
|
* @example <u--formlabelPosition="left" :model="model1" :rules="rules" ref="form1"></u--form>
|
||
|
*/
|
||
|
export default {
|
||
|
name: "u-form",
|
||
|
mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
|
||
|
provide() {
|
||
|
return {
|
||
|
uForm: this,
|
||
|
};
|
||
|
},
|
||
|
data() {
|
||
|
return {
|
||
|
formRules: {},
|
||
|
// 规则校验器
|
||
|
validator: {},
|
||
|
// 原始的model快照,用于resetFields方法重置表单时使用
|
||
|
originalModel: null,
|
||
|
};
|
||
|
},
|
||
|
watch: {
|
||
|
// 监听规则的变化
|
||
|
rules: {
|
||
|
immediate: true,
|
||
|
handler(n) {
|
||
|
this.setRules(n);
|
||
|
},
|
||
|
},
|
||
|
// 监听属性的变化,通知子组件u-form-item重新获取信息
|
||
|
propsChange(n) {
|
||
|
if (this.children?.length) {
|
||
|
this.children.map((child) => {
|
||
|
// 判断子组件(u-form-item)如果有updateParentData方法的话,就就执行(执行的结果是子组件重新从父组件拉取了最新的值)
|
||
|
typeof child.updateParentData == "function" &&
|
||
|
child.updateParentData();
|
||
|
});
|
||
|
}
|
||
|
},
|
||
|
// 监听model的初始值作为重置表单的快照
|
||
|
model: {
|
||
|
immediate: true,
|
||
|
handler(n) {
|
||
|
if (!this.originalModel) {
|
||
|
this.originalModel = uni.$u.deepClone(n);
|
||
|
}
|
||
|
},
|
||
|
},
|
||
|
},
|
||
|
computed: {
|
||
|
propsChange() {
|
||
|
return [
|
||
|
this.errorType,
|
||
|
this.borderBottom,
|
||
|
this.labelPosition,
|
||
|
this.labelWidth,
|
||
|
this.labelAlign,
|
||
|
this.labelStyle,
|
||
|
];
|
||
|
},
|
||
|
},
|
||
|
created() {
|
||
|
// 存储当前form下的所有u-form-item的实例
|
||
|
// 不能定义在data中,否则微信小程序会造成循环引用而报错
|
||
|
this.children = [];
|
||
|
},
|
||
|
methods: {
|
||
|
// 手动设置校验的规则,如果规则中有函数的话,微信小程序中会过滤掉,所以只能手动调用设置规则
|
||
|
setRules(rules) {
|
||
|
// 判断是否有规则
|
||
|
if (Object.keys(rules).length === 0) return;
|
||
|
if (process.env.NODE_ENV === 'development' && Object.keys(this.model).length === 0) {
|
||
|
uni.$u.error('设置rules,model必须设置!如果已经设置,请刷新页面。');
|
||
|
return;
|
||
|
};
|
||
|
this.formRules = rules;
|
||
|
// 重新将规则赋予Validator
|
||
|
this.validator = new Schema(rules);
|
||
|
},
|
||
|
// 清空所有u-form-item组件的内容,本质上是调用了u-form-item组件中的resetField()方法
|
||
|
resetFields() {
|
||
|
this.resetModel();
|
||
|
},
|
||
|
// 重置model为初始值的快照
|
||
|
resetModel(obj) {
|
||
|
// 历遍所有u-form-item,根据其prop属性,还原model的原始快照
|
||
|
this.children.map((child) => {
|
||
|
const prop = child?.prop;
|
||
|
const value = uni.$u.getProperty(this.originalModel, prop);
|
||
|
uni.$u.setProperty(this.model, prop, value);
|
||
|
});
|
||
|
},
|
||
|
// 清空校验结果
|
||
|
clearValidate(props) {
|
||
|
props = [].concat(props);
|
||
|
this.children.map((child) => {
|
||
|
// 如果u-form-item的prop在props数组中,则清除对应的校验结果信息
|
||
|
if (props[0] === undefined || props.includes(child.prop)) {
|
||
|
child.message = null;
|
||
|
}
|
||
|
});
|
||
|
},
|
||
|
// 对部分表单字段进行校验
|
||
|
async validateField(value, callback, event = null) {
|
||
|
// $nextTick是必须的,否则model的变更,可能会延后于此方法的执行
|
||
|
this.$nextTick(() => {
|
||
|
// 校验错误信息,返回给回调方法,用于存放所有form-item的错误信息
|
||
|
const errorsRes = [];
|
||
|
// 如果为字符串,转为数组
|
||
|
value = [].concat(value);
|
||
|
// 历遍children所有子form-item
|
||
|
this.children.map((child) => {
|
||
|
// 用于存放form-item的错误信息
|
||
|
const childErrors = [];
|
||
|
if (value.includes(child.prop)) {
|
||
|
// 获取对应的属性,通过类似'a.b.c'的形式
|
||
|
const propertyVal = uni.$u.getProperty(
|
||
|
this.model,
|
||
|
child.prop
|
||
|
);
|
||
|
// 属性链数组
|
||
|
const propertyChain = child.prop.split(".");
|
||
|
const propertyName =
|
||
|
propertyChain[propertyChain.length - 1];
|
||
|
|
||
|
const rule = this.formRules[child.prop];
|
||
|
// 如果不存在对应的规则,直接返回,否则校验器会报错
|
||
|
if (!rule) return;
|
||
|
// rule规则可为数组形式,也可为对象形式,此处拼接成为数组
|
||
|
const rules = [].concat(rule);
|
||
|
|
||
|
// 对rules数组进行校验
|
||
|
for (let i = 0; i < rules.length; i++) {
|
||
|
const ruleItem = rules[i];
|
||
|
// 将u-form-item的触发器转为数组形式
|
||
|
const trigger = [].concat(ruleItem?.trigger);
|
||
|
// 如果是有传入触发事件,但是此form-item却没有配置此触发器的话,不执行校验操作
|
||
|
if (event && !trigger.includes(event)) continue;
|
||
|
// 实例化校验对象,传入构造规则
|
||
|
const validator = new Schema({
|
||
|
[propertyName]: ruleItem,
|
||
|
});
|
||
|
validator.validate({
|
||
|
[propertyName]: propertyVal,
|
||
|
},
|
||
|
(errors, fields) => {
|
||
|
if (uni.$u.test.array(errors)) {
|
||
|
errorsRes.push(...errors);
|
||
|
childErrors.push(...errors);
|
||
|
}
|
||
|
child.message =
|
||
|
childErrors[0]?.message ?? null;
|
||
|
}
|
||
|
);
|
||
|
}
|
||
|
}
|
||
|
});
|
||
|
// 执行回调函数
|
||
|
typeof callback === "function" && callback(errorsRes);
|
||
|
});
|
||
|
},
|
||
|
// 校验全部数据
|
||
|
validate(callback) {
|
||
|
// 开发环境才提示,生产环境不会提示
|
||
|
if (process.env.NODE_ENV === 'development' && Object.keys(this.formRules).length === 0) {
|
||
|
uni.$u.error('未设置rules,请看文档说明!如果已经设置,请刷新页面。');
|
||
|
return;
|
||
|
}
|
||
|
return new Promise((resolve, reject) => {
|
||
|
// $nextTick是必须的,否则model的变更,可能会延后于validate方法
|
||
|
this.$nextTick(() => {
|
||
|
// 获取所有form-item的prop,交给validateField方法进行校验
|
||
|
const formItemProps = this.children.map(
|
||
|
(item) => item.prop
|
||
|
);
|
||
|
this.validateField(formItemProps, (errors) => {
|
||
|
if(errors.length) {
|
||
|
// 如果错误提示方式为toast,则进行提示
|
||
|
this.errorType === 'toast' && uni.$u.toast(errors[0].message)
|
||
|
reject(errors)
|
||
|
} else {
|
||
|
resolve(true)
|
||
|
}
|
||
|
});
|
||
|
});
|
||
|
});
|
||
|
},
|
||
|
},
|
||
|
};
|
||
|
</script>
|
||
|
|
||
|
<style lang="scss" scoped>
|
||
|
</style>
|