javascript - How to get access of state in js file VUEX - Stack Overflow

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I would like to get access to the state property currentUser of vuex in user.js to use it in auth.js but it doesn't work if I write: store.state.currentUser.uid === ...

And I get this error:

Cannot read property 'state' of undefined.

What is there missing in the code?

the tree:

src
 store
   user
    |>user.js
    |>mutations.js
   index.js
 auth.js

user.js:

 const state = {
   profile: {},
   loggedIn: false,
   currentUser: null,
   userProfile: {}
 }

 export default {
   namespaced: true,
   state
 }

auth.js:

import store from './store'
const fb = require('./firebaseConfig.js')

fb.auth.onAuthStateChanged(user => {
 if (user) {
  fb.postsCollection.orderBy('createdOn', 'desc').onSnapshot(querySnapshot => {

  let createdByCurrentUser
  if (querySnapshot.docs.length) {
    createdByCurrentUser = store.state.currentUser.uid === 
      querySnapshot.docChanges()[0].doc.data().userId ? 'Yes' : 'No'
    console.log(createdByCurrentUser)
   }
 })
 }
})

index.js

import Vue from 'vue'
import Vuex from 'vuex'
import user from '@/store/user'

Vue.use(Vuex)

const store = new Vuex.Store({
 state: {
   awesome: true
 },
 modules: {
  user
 }
})

export default store

I would like to get access to the state property currentUser of vuex in user.js to use it in auth.js but it doesn't work if I write: store.state.currentUser.uid === ...

And I get this error:

Cannot read property 'state' of undefined.

What is there missing in the code?

the tree:

src
 store
   user
    |>user.js
    |>mutations.js
   index.js
 auth.js

user.js:

 const state = {
   profile: {},
   loggedIn: false,
   currentUser: null,
   userProfile: {}
 }

 export default {
   namespaced: true,
   state
 }

auth.js:

import store from './store'
const fb = require('./firebaseConfig.js')

fb.auth.onAuthStateChanged(user => {
 if (user) {
  fb.postsCollection.orderBy('createdOn', 'desc').onSnapshot(querySnapshot => {

  let createdByCurrentUser
  if (querySnapshot.docs.length) {
    createdByCurrentUser = store.state.currentUser.uid === 
      querySnapshot.docChanges()[0].doc.data().userId ? 'Yes' : 'No'
    console.log(createdByCurrentUser)
   }
 })
 }
})

index.js

import Vue from 'vue'
import Vuex from 'vuex'
import user from '@/store/user'

Vue.use(Vuex)

const store = new Vuex.Store({
 state: {
   awesome: true
 },
 modules: {
  user
 }
})

export default store

• javascript
• vue.js
• vuejs2
• vuex

Share Improve this question Follow edited Oct 13, 2018 at 22:31 Lukas asked Oct 13, 2018 at 22:08 LukasLukas 60322 gold badges99 silver badges1919 bronze badges

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1 Answer 1

Sorted by: Reset to default 5

You need to use the getters, take a look in the doc

getters.js

export default {
  currentUser
}

function currentUser({ currentUser }) {
  return currentUser;
}

user.js

import getters from './getters'

export default {
  namespaced: true,
  state: {
    profile: {},
    loggedIn: false,
    currentUser: null,
    userProfile: {}
  },
  getters
}

auth.js

import store from './store';

const currentUser = store.getters['user/currentUser'];

Because you namespaced the module, you have to use it's name as a prefix to access the getter function

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