215 lines
		
	
	
		
			7.2 KiB
		
	
	
	
		
			Vue
		
	
	
	
	
	
		
		
			
		
	
	
			215 lines
		
	
	
		
			7.2 KiB
		
	
	
	
		
			Vue
		
	
	
	
	
	
| 
								 | 
							
								<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>
							 |