form: {
					dynamicAry: [],
				},
				myrules: {
					dynamicAry: []
				},
				guigerules: {
					name: [{
							required: true,
							message: '此為必填字段',
							// blur和change事件觸發(fā)檢驗(yàn)
							trigger: ['blur', 'change'],
						},
						{
							min: 2,
							max: 12,
							message: '長度在2-12個(gè)字符之間'
						},
					],
					price: [{
							required: true,
							message: '此為必填字段',
							// blur和change事件觸發(fā)檢驗(yàn)
							trigger: ['blur', 'change'],
						},
						{
							validator: (rule, value, callback) => {
								return uni.$u.test.amount(value);
							},
							message: '金額格式不對(duì)'
						}
					],
					weight: {
						type: 'number',
						required: true,
						message: '必須是數(shù)值',
						trigger: ['change']
					},
 
					kucun: {
						type: 'number',
						required: true,
						message: '必須是數(shù)值',
						trigger: ['change']
					}
				},

<u--form labelPosition="left" :model="form" :rules="myrules" ref="form2">
			<view class="block" v-for=" (item,index) in form.dynamicAry" :key="index">
 
				<view class="block__title">
					<text style="flex: 1;">規(guī)格信息<text v-if="index>0">{{index}}</text></text>
					<view style="width: 60px;" v-if="index>0">
						<u-button type="error" icon="trash" text="刪除"></u-button>
					</view>
 
				</view>
				<view class="block__content">
 
					<u-form-item required label="規(guī)格名稱" labelWidth="80" :prop="`dynamicAry.${index}.name`" borderBottom>
						<u--input v-model="item.name" border="none" placeholder="請(qǐng)?zhí)顚懸?guī)格名稱,如200g"></u--input>
					</u-form-item>
					<u-form-item required label="報(bào)價(jià)" labelWidth="80" :prop="`dynamicAry.${index}.price`" borderBottom>
						<u--input type="digit" :v-model="item.price" border="none" placeholder="請(qǐng)輸入商品報(bào)價(jià)">
						</u--input>
					</u-form-item>
 
					<u-form-item required label="重量" labelWidth="80" :prop="`dynamicAry.${index}.weight`" borderBottom>
						<u--input type="number" :v-model="item.weight" disabledColor="#ffffff" placeholder="請(qǐng)輸入商品重量"
							border="none"></u--input>
						<text @click="showGuigeWeightUnit(index)">{{item.weightUnit}}</text>
						<u-icon slot="right" name="arrow-right"></u-icon>
					</u-form-item>
					<u-form-item required label="庫存" labelWidth="80" :prop="`dynamicAry.${index}.kucun`" borderBottom>
						<u--input type="number" :v-model="item.kucun" border="none" placeholder="請(qǐng)輸入商品庫存">
						</u--input>
					</u-form-item>
 
				</view>
 
			</view>
		</u--form>

			// 對(duì)部分表單字段進(jìn)行校驗(yàn)
			async validateField(value, callback, event = null) {
				// $nextTick是必須的，否則model的變更，可能會(huì)延后于此方法的執(zhí)行
				this.$nextTick(() => {
					
					// 校驗(yàn)錯(cuò)誤信息，返回給回調(diào)方法，用于存放所有form-item的錯(cuò)誤信息
					const errorsRes = [];
					// 如果為字符串，轉(zhuǎn)為數(shù)組
					value = [].concat(value);
					// 歷遍children所有子form-item
					this.children.map((child) => {
				 
						// 用于存放form-item的錯(cuò)誤信息
						const childErrors = [];
						if (value.includes(child.prop)) {
							// 獲取對(duì)應(yīng)的屬性，通過類似'a.b.c'的形式
							const propertyVal = uni.$u.getProperty(
								this.model,
								child.prop
							);
							
							// 屬性鏈數(shù)組
							const propertyChain = child.prop.split(".");
							const propertyName =
								propertyChain[propertyChain.length - 1];
							//修改：將const改為let 
							let rule = this.formRules[child.prop];
							//修改：鏈?zhǔn)绞菬o法通過上面的方式獲取的，改為下面的方式
							if(!rule){
								rule=uni.$u.getProperty(
								this.formRules,
								child.prop
								);
							
							}
							// 如果不存在對(duì)應(yīng)的規(guī)則，直接返回，否則校驗(yàn)器會(huì)報(bào)錯(cuò)
							if (!rule) return;
							// rule規(guī)則可為數(shù)組形式，也可為對(duì)象形式，此處拼接成為數(shù)組
							const rules = [].concat(rule);
 
							// 對(duì)rules數(shù)組進(jìn)行校驗(yàn)
							for (let i = 0; i < rules.length; i++) {
								const ruleItem = rules[i];
								
								// 將u-form-item的觸發(fā)器轉(zhuǎn)為數(shù)組形式
								const trigger = [].concat(ruleItem?.trigger);
								
								// 如果是有傳入觸發(fā)事件，但是此form-item卻沒有配置此觸發(fā)器的話，不執(zhí)行校驗(yàn)操作
								if (event && !trigger.includes(event)) continue;
								// 實(shí)例化校驗(yàn)對(duì)象，傳入構(gòu)造規(guī)則
								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;
									}
								);
							}
						}
					});
					// 執(zhí)行回調(diào)函數(shù)
					typeof callback === "function" && callback(errorsRes);
				});
			},
			// 校驗(yàn)全部數(shù)據(jù)

			addGuige() {
				this.form.dynamicAry.push({
					name: '',
					price: '',
					weight: '',
					weightUnit: '克',
					kucun: '',
				});
				this.myrules.dynamicAry.push(this.guigerules);
				// 如果需要兼容微信小程序，并且校驗(yàn)規(guī)則中含有方法等，只能通過setRules方法設(shè)置規(guī)則
				//微信小程序：動(dòng)態(tài)設(shè)置才能生效，每次添加都需要，動(dòng)態(tài)綁定無效
				this.$refs.form2.setRules(this.myrules)
			},

// u-form-item 源碼文件中

// 在 props 屬性中添加
target: {
?? ?type: Object,
},
// 找到 validation 方法
this.fieldValue = this.target[this.prop];
// 修改成如下
if (this.target) {
?? ?this.fieldValue = this.target[this.prop];
} else {
?? ?this.fieldValue = this.parent.model[this.prop];
}

<u-form-item v-for="item in list" prop="name" :target="item"></u-form-item>