Access module from Vuex Store

Question

I have the following module:

export const ProfileData = {
    state: {
        ajaxData: null;
    },
    getters: {/*getters here*/},
    mutations: {/*mutations here*/},
    actions: {/*actions here*/}
}

and this module is registered in my global store:

import {ProfileData} from './store/modules/ProfileData.es6'
const store = new Vuex.Store({
    modules: {
       ProfileData: ProfileData
    }
});

I have also used the Vue.use(Vuex) and set the store in new Vue({ store: store}) properly. However, when I try to access the ajaxData belonging to the ProfileData module, in one of my components via this.$store.ProfileData.ajaxData, the console shows an undefined error. The same goes for reading the this.$store.ProfileData or this.$store.ajaxData, while this.$store is defined and I am already able to read it. I also see the ProfileData object added to the _modules property of the store in browser's console.

What is that I am doing wrong to access the modules registered to the Vuex? How can I access those?

Answer 1

Directly accessing state of Vuex module

The format to access a Module's local state is $store.state.moduleName.propertyFromState.

So you would use:

this.$store.state.ProfileData.ajaxData

Demo:

const ProfileData = {
  state: {ajaxData: "foo"}
}
const store = new Vuex.Store({
  strict: true,
  modules: {
    ProfileData
  }
});
new Vue({
  store,
  el: '#app',
  mounted: function() {
  	console.log(this.$store.state.ProfileData.ajaxData)
  }
})

<script src="https://unpkg.com/vue/dist/vue.min.js"></script>
<script src="https://unpkg.com/vuex"></script>

<div id="app">
  <p>ajaxData: {{ $store.state.ProfileData.ajaxData }}</p>
</div>

---

Getters, Actions and Mutators of modules, how to directly access them?

It depends if they are namespaced or not. See demo (explanation in comments):

const ProfileDataWithoutNamespace = {
  state: {ajaxData1: "foo1"},
  getters: {getterFromProfileDataWithoutNamespace: (state) => state.ajaxData1}
}
const ProfileDataWithNamespace = {
  namespaced: true,
  state: {ajaxData2: "foo2"},
  getters: {getterFromProfileDataWithNamespace: (state) => state.ajaxData2}
}
const store = new Vuex.Store({
  strict: true,
  modules: {
    ProfileDataWithoutNamespace,
    ProfileDataWithNamespace
  }
});
new Vue({
  store,
  el: '#app',
  mounted: function() {
    // state is always per module
  	console.log(this.$store.state.ProfileDataWithoutNamespace.ajaxData1)
    console.log(this.$store.state.ProfileDataWithNamespace.ajaxData2)
    // getters, actions and mutations depends if namespace is true or not
    // if namespace is absent or false, they are added with their original name
    console.log(this.$store.getters['getterFromProfileDataWithoutNamespace'])
    // if namespace is true, they are added with Namespace/ prefix
    console.log(this.$store.getters['ProfileDataWithNamespace/getterFromProfileDataWithNamespace'])
  }
})

<script src="https://unpkg.com/vue/dist/vue.min.js"></script>
<script src="https://unpkg.com/vuex"></script>

<div id="app">
  <p>Check the console.</p>
</div>