请老师帮忙看一下dialog回调函数怎么用
来源：1-1 vue介绍
慕移动0250816
2022-07-30 08:33:17
我在使用pagehelper的时候想实现添加数据时跳转至最新的页面，但是当分页产生新的页面时，由于是异步查询，查询出来的数据并不是最新的想请老师看看怎么解决。
相关代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.el-table .warning-row {
background: oldlace;
}
.el-table .success-row {
background: #f0f9eb;
}
</style>
<script src="js/axios-0.18.0.js"></script>
</head>
<body>
<div id="app">
<!--搜索表单-->
<el-form :inline="true" :model="brandSelect" class="demo-form-inline">
<el-form-item label="当前状态">
<el-select v-model="brandSelect.status" placeholder="当前状态">
<el-option label="启用" value="1"></el-option>
<el-option label="禁用" value="0"></el-option>
</el-select>
</el-form-item>
<el-form-item label="企业名称">
<el-input v-model="brandSelect.companyName" placeholder="企业名称"></el-input>
</el-form-item>
<el-form-item label="品牌名称">
<el-input v-model="brandSelect.brandName" placeholder="品牌名称"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="onSubmit">查询</el-button>
</el-form-item>
</el-form>
<!--按钮-->
<el-row>
<el-button type="danger" plain>批量删除</el-button>
<el-button type="primary" plain @click="addPage">新增</el-button>
</el-row>
<!--添加数据对话框表单-->
<el-dialog
title="新增品牌"
:visible.sync="dialogVisible"
@close="close"
width="30%"
>
<el-form ref="form" :model="brand" label-width="80px">
<el-form-item label="品牌名称">
<el-input v-model="brand.brandName"></el-input>
</el-form-item>
<el-form-item label="企业名称">
<el-input v-model="brand.companyName"></el-input>
</el-form-item>
<el-form-item label="排序">
<el-input v-model="brand.ordered"></el-input>
</el-form-item>
<el-form-item label="备注">
<el-input type="textarea" v-model="brand.description"></el-input>
</el-form-item>
<el-form-item label="状态">
<el-switch v-model="brand.status"
active-value="1"
inactive-value="0"
></el-switch>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="addBrand">提交</el-button>
<el-button @click="dialogVisible = false">取消</el-button>
</el-form-item>
</el-form>
</el-dialog>
<!--表格-->
<template>
<el-table
:data="tableData"
style="width: 100%"
:row-class-name="tableRowClassName"
@selection-change="handleSelectionChange"
>
<el-table-column
type="selection"
width="55">
</el-table-column>
<el-table-column
type="index"
width="50">
</el-table-column>
<el-table-column
prop="brandName"
label="品牌名称"
align="center"
>
</el-table-column>
<el-table-column
prop="companyName"
label="企业名称"
align="center"
>
</el-table-column>
<el-table-column
prop="ordered"
align="center"
label="排序">
</el-table-column>
<el-table-column
prop="status"
align="center"
label="当前状态">
<template slot-scope="scope">
{{scope.row.status == 0 ? "禁用" : "启用"}}
</template>
</el-table-column>
<el-table-column
align="center"
label="操作">
<el-row>
<el-button type="primary">修改</el-button>
<el-button type="danger">删除</el-button>
</el-row>
</el-table-column>
</el-table>
</template>
<!--分页工具条-->
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page="Page.currentPage"
:page-sizes="[5, 10, 15, 20]"
:page-size="Page.pageSize"
layout="total, sizes, prev, pager, next, jumper"
:total="Page.total">
</el-pagination>
</div>
<script src="js/vue.js"></script>
<script src="element-ui/lib/index.js"></script>
<link rel="stylesheet" href="element-ui/lib/theme-chalk/index.css">
<script>
new Vue({
el: "#app",
methods: {
/* deleteBrand(id){
axios.get("brand/delete?id="+id).then((resp)=>{
var result = resp.data;
});
},*/
close(){
},
addPage(){
this.dialogVisible=true;
this.brand={};
},
PageLoad(){
axios.get(`brand/selectAll?pageNum=${this.Page.currentPage}&pageSize=${this.Page.pageSize}&status=${this.brandSelect.status}&brandName=${this.brandSelect.brandName}&companyName=${this.brandSelect.companyName}`).then((resp)=>{
var result = resp.data;
console.log(result);
this.Page.total=result.total;
this.Page.pageSize=result.pageSize;
this.tableData=result.list;
this.Page.pages=result.pages;
this.Page.hasNextPage=result.hasNextPage;
this.Page.isFirstPage=result.isFirstPage;
this.Page.isLastPage=result.isLastPage;
this.Page.size=result.size;
this.Page.navigateLastPage=result.navigateLastPage;
});
},
tableRowClassName({row, rowIndex}) {
if (rowIndex === 1) {
return 'warning-row';
} else if (rowIndex === 3) {
return 'success-row';
}
return '';
},
// 复选框选中后执行的方法
handleSelectionChange(val) {
this.multipleSelection = val;
console.log(this.multipleSelection)
},
// 查询方法
onSubmit() {
console.log(this.brandSelect);
this.PageLoad();
},
// 添加数据
addBrand(){
console.log(this.brand);
axios.post("brand/add",this.brand).then((resp)=>{
var result = resp.data;
if (result.flag){
this.$message.success(result.msg);
this.PageLoad();
var currPage=this.Page.navigateLastPage;
this.handleCurrentChange(currPage);
}else {
this.$message.error(result.msg);
}
});
this.dialogVisible=false;
},
//分页
handleSizeChange(val) {
console.log(`每页 ${val} 条`);
this.Page.pageSize=val;
this.PageLoad();
},
handleCurrentChange(val) {
console.log(`当前页: ${val}`);
this.Page.currentPage=val;
this.PageLoad();
}
},
created(){
this.PageLoad();
},
data() {
return {
Page:{
// 当前页码
currentPage: 1,
//页面大小
pageSize:5,
//总记录条数
total:100,
//是否有下一页
hasNextPage:false,
//是否是第一页
isFirstPage:true,
//是否是最后一页
isLastPage:false,
//页数
pages:5,
//当前页面的记录条数
size:0
},
// 添加数据对话框是否展示的标记
dialogVisible: false,
// 品牌模型数据
brand: {
status: '',
brandName: '',
companyName: '',
id:"",
ordered:"",
description:""
},
brandSelect:{
status: '',
brandName: '',
companyName: '',
},
// 复选框选中数据集合
multipleSelection: [],
// 表格数据
tableData: [{
brandName: '华为',
companyName: '华为科技有限公司',
ordered: '100',
status: "1"
}, {
brandName: '华为',
companyName: '华为科技有限公司',
ordered: '100',
status: "1"
}, {
brandName: '华为',
companyName: '华为科技有限公司',
ordered: '100',
status: "1"
}, {
brandName: '华为',
companyName: '华为科技有限公司',
ordered: '100',
status: "1"
}]
}
}
})
</script>
</body>
</html>其中elemnet-ui有一个回调方法close不会用
相关代码：
addBrand(){
console.log(this.brand);
axios.post("brand/add",this.brand).then((resp)=>{
var result = resp.data;
if (result.flag){
this.$message.success(result.msg);
this.PageLoad();
var currPage=this.Page.navigateLastPage;
this.handleCurrentChange(currPage);
}else {
this.$message.error(result.msg);
}
});
this.dialogVisible=false;在这个方法里查询全部的this.PageLoad（）方法是异步的怎样使用dialog的回调方法确保
var currPage=this.Page.navigateLastPage;
这条语句拿到是最新的数据，用于产生新页面是跳转到新页面。
写回答
1回答
-
好帮手慕小脸
2022-07-30
同学你好，上述贴出与后端代码应该是相关联的，无法进行单独测试，且上述代码不属于课程演示中的案例，所以老师为此不能提供准确的编写代码思路，同学如果是在校学生的话，更建议问一下授课老师，以便于有更清晰的解决方案
祝学习愉快~
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