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
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