上个小节,我们写好了查询线上会议分页的后端代码,本小节我们来完成前端部分的设计。
一、熟悉前端页面
我们首先看一下模型层定义的变量,除了有查询条件之外,还有与分页相关的变量。总体上来看,跟用户管理页面的模型层差不多。
data: function() {
return {
dataForm: {
date: null,
mold: '全部会议'
},
dataList: [],
pageIndex: 1,
pageSize: 10,
totalCount: 0,
dataListLoading: false,
addVisible: false,
dataRule: {}
};
},
接下来我们看看前端页面的表单控件是怎么定义的。当用户点击查询按钮的时候,触发点击事件对应的回调函数是searchHandle()
,这个函数是我们一会儿要声明的。
<el-form :inline="true" :model="dataForm" :rules="dataRule" ref="dataForm" class="form">
<el-form-item prop="date">
<el-date-picker
v-model="dataForm.date"
type="date"
placeholder="选择日期"
class="input"
size="medium"
></el-date-picker>
</el-form-item>
<el-form-item>
<el-button size="medium" type="primary" @click="searchHandle()">查询</el-button>
<el-button size="medium" type="danger" @click="addHandle()">会议申请</el-button>
</el-form-item>
<el-form-item class="mold">
<el-radio-group v-model="dataForm.mold" size="medium" @change="changeHandle">
<el-radio-button label="全部会议"></el-radio-button>
<el-radio-button label="我的会议"></el-radio-button>
</el-radio-group>
</el-form-item>
</el-form>
Ajax查询出来的数据要显示在表格控件中,我们来看看表格控件的代码。
<el-table
:data="dataList"
border
v-loading="dataListLoading"
@selection-change="selectionChangeHandle"
cell-style="padding: 4px 0"
style="width: 100%;"
size="medium"
>
<el-table-column width="40px" prop="desc" header-align="center" align="center" type="expand">
<template #default="scope">
会议内容:{{ scope.row.desc }}
</template>
</el-table-column>
<el-table-column type="index" header-align="center" align="center" width="100" label="序号">
<template #default="scope">
<span>{{ (pageIndex - 1) * pageSize + scope.$index + 1 }}</span>
</template>
</el-table-column>
<el-table-column prop="title" header-align="center" align="center" label="会议主题" width="450" />
<el-table-column prop="creatorName" header-align="center" align="center" label="创建者" />
<el-table-column prop="date" header-align="center" align="center" label="日期" />
<el-table-column header-align="center" align="center" label="时间">
<template #default="scope">
<span>{{ scope.row.start }} ~ {{ scope.row.end }}</span>
</template>
</el-table-column>
<el-table-column prop="num" header-align="center" align="center" label="人数" />
<el-table-column prop="status" header-align="center" align="center" label="状态" />
<el-table-column fixed="right" header-align="center" align="center" width="150" label="操作">
<template #default="scope">
<el-button
type="text"
size="medium"
:disabled="!scope.row.canEnterMeeting"
@click="enterHandle(scope.row.id, scope.row.uuid)"
>
进入
</el-button>
<el-button
type="text"
size="medium"
:disabled="
!(
(scope.row.status == '待审批' || scope.row.status == '未开始') &&
scope.row.isCreator == 'true'
)
"
@click="deleteHandle(scope.row)"
>
删除
</el-button>
</template>
</el-table-column>
</el-table>
分页控件跟用户管理页面也差不多,基本上本项目所有页面的分页控件写法都是类似的。
<el-pagination
@size-change="sizeChangeHandle"
@current-change="currentChangeHandle"
:current-page="pageIndex"
:page-sizes="[10, 20, 50]"
:page-size="pageSize"
:total="totalCount"
layout="total, sizes, prev, pager, next, jumper"
></el-pagination>
二、加载页面数据
大家看好了,这才是你要写的代码,我们在online_meeting.vue
页面中,声明加载线上会议数据的封装方法。
loadDataList: function() {
let that = this;
that.dataListLoading = true;
let data = {
mold: that.dataForm.mold,
page: that.pageIndex,
length: that.pageSize
};
if (that.dataForm.date != null && that.dataForm.date != '') {
data.date = dayjs(that.dataForm.date).format('YYYY-MM-DD');
}
that.$http('meeting/searchOnlineMeetingByPage', 'POST', data, true, function(resp) {
let page = resp.page;
for (let one of page.list) {
if (one.status == 1) {
one.status = '待审批';
} else if (one.status == 3) {
one.status = '未开始';
} else if (one.status == 4) {
one.status = '进行中';
} else if (one.status == 5) {
one.status = '已结束';
}
//计算会议是否可以进入
//1.开会前15分钟可以进入会议室
//2.会议状态必须是未开始或者进行中
let minute = dayjs(new Date()).diff(dayjs(`${one.date} ${one.start}`), 'minute');
if (
one.mine == 'true' &&
((minute >= -15 && minute <= 0 && one.status == '未开始') || one.status == '进行中')
) {
one.canEnterMeeting = true;
} else {
one.canEnterMeeting = false;
}
}
that.dataList = page.list;
that.totalCount = page.totalCount;
that.dataListLoading = false;
});
},
然后在本页面的生命周期函数create()
中调用loadDataList()
函数。
created: function() {
this.loadDataList();
}
为分页控件设置翻页和改变显示记录数量的回调函数。
<el-pagination
@size-change="sizeChangeHandle"
@current-change="currentChangeHandle"
:current-page="pageIndex"
:page-sizes="[10, 20, 50]"
:page-size="pageSize"
:total="totalCount"
layout="total, sizes, prev, pager, next, jumper"
></el-pagination>
sizeChangeHandle: function(val) {
this.pageSize = val;
this.pageIndex = 1;
this.loadDataList();
},
currentChangeHandle: function(val) {
this.pageIndex = val;
this.loadDataList();
},
三、有条件查询数据
我们声明查询按钮点击事件和切换组合按钮对应的回调函数,写完这个函数大家就可以运行前后端项目,测试一下数据的查询和分页效果。
searchHandle: function() {
this.$refs['dataForm'].validate(valid => {
if (valid) {
this.$refs['dataForm'].clearValidate();
if (this.dataForm.name == '') {
this.dataForm.name = null;
}
if (this.pageIndex != 1) {
this.pageIndex = 1;
}
this.loadDataList();
} else {
return false;
}
});
},
changeHandle: function(val) {
this.searchHandle();
},