亲，先看效果
image.png
简单说明
材料相关的是通过增加数组的长度属性动态创建出来的，并且校验材料名称。运单数量。签收数量必填
追重要的是需求校验签收数量不能大于运单数量
知识点
1，el-form的动态增减表单项：
循环动态建的元素属性名的书写遵循：
<el-form-item
v-for="(domain, index) in dynamicValidateForm.domains"
:label="'域名' + index"
:key="domain.key"
:prop="'domains.' + index + '.value'"
:rules="{
required: true, message: '域名不能为空', trigger: 'blur'
}"
>
<el-input v-model="domain.value"></el-input><el-button @click.prevent="removeDomain(domain)">删除</el-button>
</el-form-item>
上面是重点
2，统一对象之间的输入内容关联校验
如：输入签收数量，或运单数量校验签收数量
用到el-form的methods 对部分表单字段进行校验的方法 validateField
例如：
this.$refs['defaultData'].validateField('signMaterials.' + index + '.signinQuantity')
defaultData为表单的ref ,signMaterials为变化的材料数组，index为操作的数组的当前项，signinQuantity为校验的属性
代码实现
html
<el-form
:model="formData"
:rules="rules"
ref="defaultData"
label-width="100px"
class="application-signForm"
>
<el-card style="margin-bottom: 18px;">
<el-row
class="material-item"
v-for="(material, index) in formData.signMaterials"
:ref="'signMaterials.' + index"
:key="index"
>
<el-col :span="11">
<el-form-item
label="材料名称"
label-width="110px"
:prop="'signMaterials.' + index + '.materialId'"
:required="required"
:rules="{
validator: validateMaterial,
trigger: ['change', 'blur'],
}"
>
<frequent-material-select
ref="materialSelect"
:width="195"
@material-change="materialChange"
:row-data="material"
:index="index"
:select-options="selectOptions"
:hidelabel="true"
></frequent-material-select>
</el-form-item>
</el-col>
<el-col>
<el-col :span="12">
<el-form-item
label="运单数量"
label-width="110px"
label-position="left"
:required="required"
:prop="'signMaterials.' + index + '.deliveryQuantity'"
:rules="{
validator: validateDeliveryQuantity,
trigger: ['change', 'blur'],
}"
>
<el-input
class="deliveryQuantity-class"
@input.native="deliveryQuantityChange($event, material, index)"
v-model="material.deliveryQuantity"
></el-input>
</el-form-item>
</el-col>
// 设置prop属性必须这样子才能起到校验的效果
<el-col :span="12">
<el-form-item
label="签收数量"
label-width="110px"
label-position="left"
:required="required"
:prop="'signMaterials.' + index + '.signinQuantity'"
:rules="{
validator: validateSignQuantity,
trigger: ['change', 'blur'],
}"
>
<el-input
@input.native="signQuantityChange($event, material, index)"
@blur="signQuantityBlur($event,material)"
class="signinQuantity-class"
v-model="material.signinQuantity"
></el-input>
</el-form-item>
</el-col>
</el-col>
<el-col :span="22" v-if="material.showReadOnly">
<el-col :span="5" class="seat">
<label class="el-form-item__label">
累计签收量:
</label>
</el-col>
<el-col :span="7">
<span class="application-spanstyle">
{{ material.cumulativeSignShow }}{{ material.unit }}
</span>
</el-col>
<el-col :span="5" class="seat">
<label class="el-form-item__label">
{{ material.controlName }}:
</label>
</el-col>
<el-col :span="7">
<span class="application-spanstyle">
{{ material.controlQuantity }}{{ material.unit }}
</span>
</el-col>
</el-col>
<el-col :span="2" :offset="22" class="btn-delete" v-if="formData.signMaterials.length>1">
<el-tooltip
class="item"
effect="dark"
content="删除本条材料"
placement="bottom"
>
<i
class="el-icon-circle-close icon-delete"
@click="deleteMaterial(index)"
/>
</el-tooltip>
</el-col>
</el-row>
<div class="add-btn">
<span @click="addMaterial">
+ 添加材料
</span>
</div>
</el-card>
</el-row>
</el-form>
js
methods:{
// 1,增加数组长度，增加材料按钮
addMaterial(){
this.formData.signMaterials.push(JSON.parse(JSON.stringify(this.materialItem)))
},
//2,删除材料
deleteMaterial(index){
this.formData.signMaterials.splice(index,1)
},
//3,校验材料名称必填且材料不能重复
validateMaterial(rule, value, callback) {
if (!value) {
callback(new Error('请输入材料名称'));
}
let flag = 0
this.formData.signMaterials.forEach(item => {
if (item.materialId === value) {
flag++
}
})
if (flag >= 2) {
callback(new Error('材料不能重复'))
return false
}else{
callback();
}
},
//4,校验运单数量：运单数量不能超过3位小数
validateDeliveryQuantity(rule, value, callback){
var pattern = /^0$|^[1-9]\d{0,15}$|^[1-9]\d{0,15}\.{1}\d{1,3}$|^0\.{1}\d{1,3}$/g;
//alert(pattern.test(value));
if (value == null || value === '') {
callback(new Error('请输入运单量'));
return false;
} else if (value < 0 || value > 100000) {
//校验数字在0-100000之间，最多3位小数
callback(new Error('请输入0-10万之间数字'));
return false;
}
else if(!pattern.test(value)){
callback(new Error('最多输入3位小数'));
return false;
}
callback();
},
//5,校验签收数量：签收数量不能超过3位小数
validateSignQuantity(rule, value,callback){
const deliveryQuantity = this.formData.signMaterials &&this.formData.signMaterials[this.currentIndex] && this.formData.signMaterials[this.currentIndex].deliveryQuantity
var pattern = /^0$|^[1-9]\d{0,15}$|^[1-9]\d{0,15}\.{1}\d{1,3}$|^0\.{1}\d{1,3}$/g;
//alert(pattern.test(value));
if (value == null || value === '') {
callback(new Error('请输入签收量'));
return false;
} else if (value < 0 || value > 100000) {
//校验数字在0-100000之间，最多3位小数
callback(new Error('请输入0-10万之间数字'));
return false;
}else if(!pattern.test(value)){
callback(new Error('最多输入3位小数'));
return false;
}
else if(parseFloat(value) > parseFloat(deliveryQuantity) ){
callback(new Error('签收数量不能大于运单数量的数据'))
}
callback();
},
// 5.输入运单数量手动触发校验签收数量（*本文的重点，卡了好久，主要还是对element的对部分字段校验不熟悉）
deliveryQuantityChange($event,material,index){
if(material.signinQuantity){
this.currentIndex = index
this.$refs['defaultData'].validateField('signMaterials.' + index + '.signinQuantity')
}
},
}
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