Not able to access i18 plugin from mutation in classic mode store in Nuxt application

问题

I'm trying to implement Vuex i18n package within my Nuxt application. In my nuxt.conf.js file in plugins array I have:

{
    src: '@/plugins/i18n.js',
    ssr: false
},

plugins/i18n.js file is:

import Vue from "vue";
import vuexI18n from "vuex-i18n/dist/vuex-i18n.umd.js";
import toEnglish from "../translations/toEnglish";
import toSpanish from "./../translations/toSpanish";
import toGerman from "./../translations/toGerman";

export default ({ store }) => {
    Vue.use(
        vuexI18n.plugin,
        store,
        {
            onTranslationNotFound: function (locale, key) {
                console.warn(`vuex-i18n :: Key '${key}' not found for locale '${locale}'`)
            }
        }
    );

    // register the locales
    Vue.i18n.add('en', toEnglish);
    Vue.i18n.add('de', toGerman);
    Vue.i18n.add('es', toSpanish);

    // Set the start locale to use
    Vue.i18n.set('de');
    Vue.i18n.fallback('en');
}

Last thing is my store. I'm using classic mode of vuex store in Nuxt:

import Vuex from "vuex";

const store = () => {
    return new Vuex.Store({
        state: () => ({
            currentLanguage: ''
        }),
        mutations: {
            changeLang(state, response) {
                if (response) {
                    console.log(this);
                    state.currentLanguage = response;
                    this.i18n.set(response);
                }
            }
        }
    })
};


export default store;

As you can see in store file in mutation I'm trying to access i18n plugin with this keyword. Unfortunetally in print error in console:

TypeError: Cannot read property 'set' of undefined

this which I consoled also inside mutation is:

回答1:

I changed this.i18n.set(response); to state.i18n.locale = response; inside my mutation and now it seems working.

For some reason when I call this mutation my video.js player refresh. I will try to find out why.

来源：https://stackoverflow.com/questions/54565138/not-able-to-access-i18-plugin-from-mutation-in-classic-mode-store-in-nuxt-applic