1.说明
(1) 本文主要实现通过动态表单的方式实现自定义筛选的功能，用户可以自己添加筛选的项目，筛选条件及筛选内容。
(2) 每个项目的筛选包含筛选项目，筛选条件，筛选方式及筛选值。
筛选项目代表表中的字段，如姓名，年龄等
筛选条件包含等于，不等于，大于，小于，包含等
筛选类型包含手动输入值的方式，通过下拉进行选择的方式，和表中的其他字段进行比较的方式
筛选值可以手动输入，可以通过下拉进行选择，也可以选择某个日期。
2.示例
<template>
<a-modal :visible="visibleFlag" @ok="handleOk" @cancel="handleCancel" unmountOnClose width="auto">
<div style="text-align: right">
<a-button @click="handleAdd()">Add</a-button>
</div>
<a-form :model="form" layout='vertical' style="width: 1000px;height: 400px;" ref="formRef">
<div v-for="(item,index) in form.data">
<a-row :gutter="10">
<a-col :span="5">
<a-form-item :field="`data[${index}].filterColumn`" label="Column" :hide-label="index != 0"
:rules="[{required:true,message:'Column不能为空'}]"
validate-trigger="blur">
<a-select v-model="item.filterColumn" :style="{width:'500px'}" placeholder="Please select ..."
@blur="columnBlur(form.data[index].filterColumn, form.data[index].filterType , index)" allow-clear>
<a-option v-for="item of columns" :value="item.value" :label="item.label"/>
</a-select>
</a-form-item>
</a-col>
<a-col :span="6">
<a-form-item :field="`data[${index}].filterOperation`" label="Operation" :hide-label="index != 0"
:rules="[{required:true,message:'Operation不能为空'}]"
validate-trigger="blur">
<a-select v-model="item.filterOperation" :style="{width:'500px'}"
placeholder="Please select ..." allow-clear>
<a-option v-for="item of filterOpeData[index]" :value="item.value" :label="item.label"/>
</a-select>
</a-form-item>
</a-col>
<a-col :span="5">
<a-form-item :field="`data[${index}].filterType`" label="Type" :hide-label="index != 0"
:rules="[{required:true,message:'Type不能为空'}]"
validate-trigger="blur">
<a-select v-model="item.filterType" :style="{width:'500px'}" placeholder="Please select ..."
@blur="typeBlur(form.data[index].filterColumn, form.data[index].filterType, index)" allow-clear>
<a-option v-for="item of filterTypeData" :value="item.value" :label="item.label"/>
</a-select>
</a-form-item>
</a-col>
<a-col :span="5">
<a-form-item :field="`data[${index}].filterValue`" label="Value" :hide-label="index != 0"
:rules="[{required:true,message:'Value不能为空'}]"
validate-trigger="blur">
<a-input v-model="item.filterValue" :style="{width:'500px'}"
placeholder="Please enter something"
allow-clear v-if="valueFlag[index] == 0"/>
<a-select v-model="item.filterValue" :style="{width:'400px'}" placeholder="Please select ..."
v-if="valueFlag[index] == 1" allow-clear>
<a-option v-for="item of colValList[index]" :value="item.value" :label="item.label"/>
</a-select>
<a-date-picker v-model="item.filterValue" :style="{width:'400px'}"
v-if="valueFlag[index] == 2" />
</a-form-item>
</a-col>
<a-col :span="3">
<a-button v-show="index != 0" @click="handleDelete(index)" :style="{marginLeft:'10px'}">Delete</a-button>
</a-col>
</a-row>
</div>
</a-form>
</a-modal>
</template>
<script lang="ts" setup>
import {onMounted, ref} from 'vue';
import {Message} from '@arco-design/web-vue';
import {FormInstance} from '@arco-design/web-vue/es/form';
const formRef = ref<FormInstance>();
const visibleFlag = ref(false)
// 0：输入框；1：下拉选择器；2：日期
const valueFlag = ref([] as any)
valueFlag.value.push(0)
const form = ref({
data: [{
filterColumn: '',
filterOperation: '',
filterType: '',
filterValue: ''
}]
})
const colValList = ref([] as any)
const filterOpeData = ref([] as any)
const filterTypeData = [{
value: '0',
label: 'Value',
}, {
value: '1',
label: 'Column',
}, {
value: '2',
label: 'User List',
}]
const operationData1 = [
{value: '1', label: 'EQUAL'},
{value: '2', label: 'GREATER_THAN'},
{value: '3', label: 'GREATER_THAN_OR_EQUAL'},
{value: '4', label: 'LESS_THAN'},
{value: '5', label: 'LESS_THAN_OR_EQUAL'},
{value: '6', label: 'NOT_EQUAL'}]
const operationData2 = [
{value: '1', label: 'EQUAL'},
{value: '2', label: 'GREATER_THAN'},
{value: '3', label: 'GREATER_THAN_OR_EQUAL'},
{value: '4', label: 'LESS_THAN'},
{value: '5', label: 'LESS_THAN_OR_EQUAL'},
{value: '6', label: 'NOT_EQUAL'},
{value: '9', label: 'CONTAINS'},
{value: '10', label: 'STARTS_WITH'},
{value: '11', label: 'ENDS_WITH'},
{value: '12', label: 'DOES_NOT_START_WITH'},
{value: '13', label: 'DOES_NOT_END_WITH'},
{value: '14', label: 'DOES_NOT_CONTAIN'},
{value: '15', label: 'STARTS_OR_ENDS_WITH'}
]
const handleOk = async () => {
const validRes = await formRef.value?.validate();
if (!validRes) {
visibleFlag.value = false;
console.log(JSON.stringify(form.value.data))
} else {
console.log("校验失败")
}
}
const handleCancel = () => {
visibleFlag.value = false;
}
const handleDelete = (index: any) => {
form.value.data.splice(index, 1);
valueFlag.value.splice(index, 1);
colValList.value.splice(index, 1);
}
const handleAdd = () => {
form.value.data.push({
filterColumn: '',
filterOperation: '',
filterType: '',
filterValue: ''
})
valueFlag.value.push(0)
}
const columnBlur = (colVal: any, typeVal: any, index: any) => {
if (!colVal) {
return
}
const col = columns.value.find((item: { value: any; }) => item.value == colVal)
if (col.type == 'text' || col.type == 'number') {
filterOpeData.value[index] = operationData2
} else {
filterOpeData.value[index] = operationData1
}
if (col.type == 'list' && typeVal != '1') {
valueFlag.value[index] = 1
colValList.value[index] = [{
value: '1',
label: '处理提交'
}, {
value: '2',
label: '处理中'
}, {
value: '3',
label: '处理完成'
}]
}
if (col.type == 'date') {
valueFlag.value[index] = 2
}
}
const typeBlur = (colVal: any, typeVal: any, index: any) => {
if (typeVal == '1') {
if (!colVal) {
Message.error({content: 'column信息不能为空', position: 'top'});
return
} else {
const col = columns.value.find((item: { value: any; }) => item.value == colVal)
if (col.type == 'list') {
Message.error({content: 'list类型的column不支持和其他列进行比较', position: 'top'});
form.value.data[index].filterType = ''
return
}
valueFlag.value[index] = 1
if (col.type == 'date') {
colValList.value[index] = columns.value.filter((item: { type: string; }) => item.type == 'date')
} else if (col.type == 'text') {
colValList.value[index] = columns.value.filter((item: { type: string; }) => item.type == 'text' || item.type == 'number')
} else if (col.type == 'number') {
colValList.value[index] = columns.value.filter((item: { type: string; }) => item.type == 'number')
} else if (col.type == 'list') {
} else {
colValList.value[index] = []
}
}
}
}
// 打开弹窗
const openDialog = () => {
visibleFlag.value = true;
};
// 导出方法在父组件中进行使用
defineExpose({openDialog});
const columns = ref()
const getColumnList = () => {
columns.value = [{
value: '12',
label: 'genoId',
type: 'text'
},
{
value: '13',
label: 'status',
type: 'list'
},
{
value: '14',
label: 'createTime',
type: 'date'
},
{
value: '15',
label: 'qty',
type: 'number'
}
]
}
// 组件完成初始渲染并创建 DOM 节点后运行
onMounted(async () => {
await getColumnList()
})
</script>
<script lang="ts">
export default {
name: "dynamicFilter"
}
</script>
<style scoped>
</style>
说明：
①通过表单的方式进行实现，表单关联的数据源form是对象格式，如下：
const form = ref({
data: [{
filterColumn: '',
filterOperation: '',
filterType: '',
filterValue: ''
}]
})
对象内是一个id为data的数组，数组内的每条数组则存储一个项目的筛选内容，包含筛选项目，筛选条件，筛选方式及筛选值。数据源设置为对象是为了进行校验处理，如果是数组格式，无法实现动态表单的的校验(不同的前端框架，可能会有所不同，但推荐使用对象格式)
②动态表单的实现
在form标签内嵌套div标签，并在div标签上进行循环form.data，如果动态的项目只有一个，可以直接在form-item上进行循环处理。具体的每个表单项可以通过form.data[index].表单项名的方式进行绑定，也可以通过item.表单项名的方式进行绑定。点击新增按钮，会向form.data中push一条新数据，添加的筛选项目后面有删除按钮，点击删除按钮，通过form.data.splice方法删除数组中的元素。
③动态表单的校验处理
在每个表单项中添加校验规则，不要在form上添加校验规则
在arco design框架中的动态表单校验如下：
<a-form-item :field="`data[${index}].filterColumn`" label="Column" :hide-label="index != 0"
:rules="[{required:true,message:'Column不能为空'}]"
validate-trigger="blur">
<a-select v-model="item.filterColumn" :style="{width:'500px'}" placeholder="Please select ..."
@blur="columnBlur(form.data[index].filterColumn, form.data[index].filterType , index)" allow-clear>
<a-option v-for="item of columns" :value="item.value" :label="item.label"/>
</a-select>
</a-form-item>
通过rules关联校验规则，注意field属性的设置，在arco design中field需要进行如上设置，结果例如：data[0].filterColumn。
在arco design中是设置field属性，在element ui中是设置prop属性，并且内容的设置方式也不一样，需要注意。
④提交时的校验
当前表单嵌套在对话框中，点击确定按钮时，需要先进行表单的校验处理，如下：
const handleOk = async () => {
const validRes = await formRef.value?.validate();
if (!validRes) {
visibleFlag.value = false;
console.log(JSON.stringify(form.value.data))
} else {
console.log("校验失败")
}
}
通过调用表单的ref对象的validate方法，如果校验失败则返回失败的项目的field属性内容及错误信息，如果成功则返回undefined，所以通过判断返回结果就可以判断校验成功与否。
校验失败的返回信息如下
{
"data[0].filterColumn": {
"label": "Column",
"field": "data[0].filterColumn",
"type": "string",
"isRequiredError": true,
"message": "Column不能为空"
},
"data[0].filterOperation": {
"label": "Operation",
"field": "data[0].filterOperation",
"type": "string",
"isRequiredError": true,
"message": "Operation不能为空"
},
"data[0].filterType": {
"label": "Type",
"field": "data[0].filterType",
"type": "string",
"isRequiredError": true,
"message": "Type不能为空"
},
"data[0].filterValue": {
"label": "Value",
"field": "data[0].filterValue",
"type": "string",
"isRequiredError": true,
"message": "Value不能为空"
},
"data[1].filterColumn": {
"label": "Column",
"field": "data[1].filterColumn",
"type": "string",
"isRequiredError": true,
"message": "Column不能为空"
},
"data[1].filterOperation": {
"label": "Operation",
"field": "data[1].filterOperation",
"type": "string",
"isRequiredError": true,
"message": "Operation不能为空"
},
"data[1].filterType": {
"label": "Type",
"field": "data[1].filterType",
"type": "string",
"isRequiredError": true,
"message": "Type不能为空"
},
"data[1].filterValue": {
"label": "Value",
"field": "data[1].filterValue",
"type": "string",
"isRequiredError": true,
"message": "Value不能为空"
},
"data[2].filterColumn": {
"label": "Column",
"field": "data[2].filterColumn",
"type": "string",
"isRequiredError": true,
"message": "Column不能为空"
},
"data[2].filterOperation": {
"label": "Operation",
"field": "data[2].filterOperation",
"type": "string",
"isRequiredError": true,
"message": "Operation不能为空"
},
"data[2].filterType": {
"label": "Type",
"field": "data[2].filterType",
"type": "string",
"isRequiredError": true,
"message": "Type不能为空"
},
"data[2].filterValue": {
"label": "Value",
"field": "data[2].filterValue",
"type": "string",
"isRequiredError": true,
"message": "Value不能为空"
}
}
校验通过后输出的form.data信息，如下：
[{
"filterColumn": "12",
"filterOperation": "1",
"filterType": "0",
"filterValue": "23"
}, {
"filterColumn": "13",
"filterOperation": "1",
"filterType": "0",
"filterValue": "1"
}, {
"filterColumn": "14",
"filterOperation": "2",
"filterType": "0",
"filterValue": "2024-05-14"
}]
3.运行截图
校验失败
输入内容后，校验通过
4.总结
①注意表单绑定的数据源的格式及不同前端框架的校验的方式
②为了使画面更加友好，可以将表单放在表格中
