表单验证 一个属性根据另一个属性有无进行操作(属性绑定)
1、问题描述
需求:表单里面后两个属性需要根据前面一个属性进行有无判断。如果前面属性没有输入值,则不需要进行操作;如果前面属性有输入值,则后面两个值都需要进行填入。即前面不选,则后必选。
包含:表单验证、属性绑定、整体表单验证
最后样式:
<el-formref="ruleForm":rules="formRules":model="tableData"><el-tableborder="true":show-header="false":data="tableData"><el-table-columnlabel="节点参数"prop=""align="center"min-width="150"><template #default="scope">{{ tabelText.node_param }}</template></el-table-column><el-table-columnprop="param"align="center"min-width="150"><template #default="scope"><el-input v-model="scope.row.param" /></template></el-table-column><el-table-columnlabel="参数值符号"prop=""align="center"min-width="150"><template #default="scope">{{ tabelText.node_symbol }}</template></el-table-column><el-table-columnprop="operate"align="center"min-width="150"><template #default="scope"><el-form-itemprop="operate":rules="(scope.row.param && !scope.row.operate) " />><el-selectv-model="scope.row.operate"class="m-2"placeholder="Select"style="width:100px"clearable><el-optionv-for="item in options":key="item.value":label="item.label":value="item.value"/></el-select></el-form-item></template></el-table-column><el-table-columnlabel="参数值"prop=""min-width="150"align="center"><template #default="scope">{{ tabelText.node_val }}</template></el-table-column><el-table-columnprop="param_val"min-width="150"align="center"><template #default="scope"><el-form-itemprop="param_val":rules="(scope.row.param && !scope.row.param_val) ? [{required: true, message: '请输入参数值', trigger: 'blur'}]:[{required:false}]"><el-input v-model="scope.row.param_val" /></el-form-item></template></el-table-column></el-table> </el-form><script setup>const ruleForm = ref(null)// 表单验证const formRules = ref({})// 整个表单验证const createJudgeForm = () => {ruleForm.value.validate((valid) => {if (valid) {createView()} else {ElMessage({type: 'error',message: '表单验证失败'})}})}</script>