How to use vue and Element-plus to group and sort data

How to use Vue and Element Plus to group and sort data

Vue is a popular JavaScript framework that can help us build front-end applications. Element Plus is a desktop component library based on Vue. It provides a rich set of UI components, allowing us to easily build beautiful and user-friendly interfaces. In this article, we will explore how to use Vue and Element Plus to group and sort data.

First, we need to prepare some basic code. We assume that Vue and Element Plus have been installed and the project has been configured accordingly. In the template of the Vue component, we can use the table component provided by Element Plus to display table data.

<template>
  <el-table
    :data="tableData"
    :key="tableKey"
  >
    <!-- 这里是表格的列定义 -->
    <el-table-column
      prop="name"
      label="姓名"
      sortable
    ></el-table-column>
    <el-table-column
      prop="age"
      label="年龄"
      sortable
    ></el-table-column>
    <el-table-column
      prop="gender"
      label="性别"
      sortable
    ></el-table-column>
  </el-table>
</template>

<script>
export default {
  data() {
    return {
      tableData: [
        { name: '张三', age: 20, gender: '男' },
        { name: '李四', age: 25, gender: '女' },
        { name: '王五', age: 30, gender: '男' },
        ...
      ],
      tableKey: 0
    };
  }
};
</script>

In the above code, we use the table component to display table data. The data attribute of the table is bound to an array tableData, which contains the data we want to display. Next, we need to add some code for the grouping and sorting functionality.

The grouping function can be implemented through the slot-scope of the table. We can customize a column to group the data that needs to be grouped, and display the grouped information above the table.

<el-table-column
  label="分组"
  v-slot="{ row }"
>
  {{ getGroup(row) }}
</el-table-column>

In the above code, we use the label attribute to specify the column title as "Group", and use v-slot to define the content of the column. In v-slot, we can access the data of the current row and obtain group information through the getGroup method.

export default {
  methods: {
    getGroup(row) {
      // 根据数据的某个属性来进行分组逻辑判断
      if (row.age < 25) {
        return '青年组';
      } else {
        return '中年组';
      }
    }
  }
};

In the above code, we defined the getGroup method to make logical judgments about grouping based on the age attribute of the data. If the age is less than 25 years old, return the "youth group", otherwise return the "middle-aged group". By adding a custom content above the table, we can display grouping information dynamically.

The sorting function can be achieved by setting the sortable attribute of the table column. In the above code, we set the sortable attribute for the three columns of name, age and gender. In this way, the user can perform sorting operations by clicking the sorting icon at the head of the table.

The above code is just a simple example. We can customize the grouping and sorting logic according to actual business needs. By using the rich components and functions provided by Vue and Element Plus, we can easily implement grouping and sorting of data, as well as other complex front-end needs. I hope this article can help you in the development of Vue and Element Plus!

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