zoukankan      html  css  js  c++  java
  • [Nuxt] Navigate with nuxt-link and Customize isClient Behavior in Nuxt and Vue.js

    Because Nuxt renders pages on the server, you should use the nuxt-link components to navigate between pages. Each time a page loads, you can check if you're on the client or server and avoid doing unnecessary loading based on how the page was rendered. This lesson walks you through using nuxt-link and isClient to navigate and avoid reloading data.

    'fetch' can do server side rendering:

     async fetch ({store, redirect, error}) {
    try {
        const res = await axios.get('https://todos-cuvsmolowg.now.sh/todos')
        store.commit('init', res.data)
      } catch (err) {
        redirect('/error')
      }
    }

    Once it successfully store the data inside the store object, we don't need to fetch it again.

    To avoid refetching the data, we can use 'isClient' from the context.

    async fetch ({store, redirect, error, isClient}) {
      if (isClient) {
        return
      }
      try {
        const res = await axios.get('https://todos-cuvsmolowg.now.sh/todos')
        store.commit('init', res.data)
      } catch (err) {
        redirect('/error')
      }
    }

    Because this fetch method can be reused in elsewhere, so we can make it a sprated file:

    shared.js:

    import axios from 'axios'
    
    export async function init ({store, redirect, error, isClient}) {
      if (isClient) {
        return
      }
      try {
        const res = await axios.get('https://todos-cuvsmolowg.now.sh/todos')
        store.commit('init', res.data)
      } catch (err) {
        redirect('/error')
      }
    }

    Required it in side page:

    <template>
      <div>
        <nuxt-link to="/computed">Computed</nuxt-link>
        <article class="pa3 pa5-ns">
          <ul class="list pl0 ml0 center mw6 ba b--light-silver br2">
            <li v-for="todo of todos" class="ph3 pv3 bb b--light-silver">{{todo.task}}</li>
          </ul>
        </article>
      </div>
    </template>
    
    <script>
      import { mapState } from 'vuex'
      import {init} from './shared'
    
      export default {
    
        fetch: init,
        computed: {
          ...mapState({
            todos: (state) => state.todos
          })
        }
      }
    </script>

    Here we use 'nuxt-link' to the navigation.

    Computed page should not load the todos again, since we already have the data store in the store object.

    computed.vue:

    <template>
      <div>
        <nuxt-link to="/">Home</nuxt-link>
        <article class="pa3 pa5-ns">
          <ul class="list pl0 ml0 center mw6 ba b--light-silver br2">
            <li v-for="todo of todos" class="ph3 pv3 bb b--light-silver">{{todo.task}}</li>
          </ul>
        </article>
      </div>
    </template>
    
    <script>
      import { mapState } from 'vuex'
      import {init} from './shared'
    
      export default {
    
        fetch: init,
        computed: {
          ...mapState({
            todos: (state) => state.todos
          })
        }
      }
    </script>
  • 相关阅读:
    更改开机运行级别
    三个路由的路由表信息
    网络
    网卡配置文件与网络命令显示不一致
    使CentOS7恢复网卡传统命名
    删除CentOS7的虚拟网卡
    将克隆的eth3和eth4改为eth0和eth1
    单臂路由--1个物理网卡绑定多个IP地址
    洛谷P1098 字符串的展开
    洛谷P1086 花生采摘
  • 原文地址:https://www.cnblogs.com/Answer1215/p/7230822.html
Copyright © 2011-2022 走看看