如何在 v-data-table vuetify 中查看分页方向

问题描述

我需要向后端发出不同的 get 请求 取决于我是在桌子上向前还是向后移动。我必须使用什么事件以及如何制作?

解决方法

您可以使用数据表中的@pagination 事件。它发出这样的对象:

{page: 2,itemsPerPage: 5,pageStart: 5,pageStop: 10,pageCount: 2}

因此您可以在自定义方法中捕获它并确定“页面”值是否高于或低于当前值,以便知道是向前还是向后。一个例子:

<template>
<div>
  <v-data-table
    :headers="headers"
    :items="desserts"
    :items-per-page="5"
    class="elevation-1"
    @pagination="writeLog"
  ></v-data-table>
</div>
</template>
<script>
  export default {
    data () {
      return {
        headers: [
          {
            text: 'Dessert (100g serving)',align: 'start',sortable: false,value: 'name',},{ text: 'Calories',value: 'calories' },{ text: 'Fat (g)',value: 'fat' },{ text: 'Carbs (g)',value: 'carbs' },{ text: 'Protein (g)',value: 'protein' },{ text: 'Iron (%)',value: 'iron' },],desserts: [
          {
            name: 'Frozen Yogurt',calories: 159,fat: 6.0,carbs: 24,protein: 4.0,iron: '1%',{
            name: 'Ice cream sandwich',calories: 237,fat: 9.0,carbs: 37,protein: 4.3,{
            name: 'Eclair',calories: 262,fat: 16.0,carbs: 23,protein: 6.0,iron: '7%',{
            name: 'Cupcake',calories: 305,fat: 3.7,carbs: 67,iron: '8%',{
            name: 'Gingerbread',calories: 356,carbs: 49,protein: 3.9,iron: '16%',{
            name: 'Jelly bean',calories: 375,fat: 0.0,carbs: 94,protein: 0.0,iron: '0%',{
            name: 'Lollipop',calories: 392,fat: 0.2,carbs: 98,protein: 0,iron: '2%',{
            name: 'Honeycomb',calories: 408,fat: 3.2,carbs: 87,protein: 6.5,iron: '45%',{
            name: 'Donut',calories: 452,fat: 25.0,carbs: 51,protein: 4.9,iron: '22%',{
            name: 'KitKat',calories: 518,fat: 26.0,carbs: 65,protein: 7,iron: '6%',}
      currentPage = 1
    },methods: {
       writeLog(paginationObject){
            let action
            console.log(paginationObject);
            this.currentPage < paginationObject.page ? action = 'forward' : action ='backguard'
            this.currentPage = paginationObject.page
            console.log(action)
            //Write code to call your backend using action...
        }
    },}
</script>