Nuxt.js vuex 存储未持久化

Question

I've got some strange issues with my Nuxt.js Setup. Some States in Store arent persistent, everytime I load another view, they went back to the default value.

pages/test.vue

<template>
  <section class="section">
    <b-container>
      <b-row>
        <b-col cols=12>
          <b-button @click="setTest" variant="dark">test</b-button> | {{this.$store.state.test}} |
        </b-col>
      </b-row>
    </b-container>
  </section>
</template>

<script>
export default {
  name: 'test',
  methods: {
    setTest() {
      this.$store.commit("setTest")
    },
  }
}
</script>

store/index.js

export const state = () => ({
  test: "test"
})

export const mutations = {
  setTest: (state) => state.test = 'Hello'
}

Testscenario is to hit the "test"-button who call the method with mutation-commit "setTest" which set the state to "Hello". Currently it works fine, but if I changed the view or reload the page, the state is set to default "test".

What am I doing wrong?

Answer 1

Alright, so the behavior is totally logic. Vuex is not supposed to be persistent.

For any persistence on the front-end, you need either:

• cookies
• localStorage
• pass it in the URL (query params)
• IndexedDB
• get the data back from making a call to a backend

Some of the packages here may be useful: https://github.com/vuejs/awesome-vue#persistence

---

If you reload your page with an F5, all your JS will be wiped and loaded again. Hence, no state will be kept since it will be a brand new page. When working with frontend frameworks, you cannot expect it to just work after a page refresh.

Same go when you do follow an href , it is an actual real navigation. What you need to do, is to use a <nuxt-link></nuxt-link> component, with something like to="/profile" to let VueJS move to this URL.

NuxtLink is a Nuxt.js component and essentially a component on top of <router-link></router-link> , which is Vue router .

TLDR: you cannot use things like window.location.href , nor <a href="..." . You may use the given components by either Nuxt ( nuxt-link ) or Vue's router ( router-link ), if you're using VueJS only.

Giving a read to the Vue router's documentation may be a good start to understand things a bit more !

---

If you're using nuxt/auth , give a try to that one: https://auth.nuxtjs.org/api/storage/#universal-storage