Ways to retrieve the value of 'this' within the state of a Vuex store module

Imagine a scenario where there is a "store" directory structured as follows:

...
store
├── auth
│   └── user.js
└── index.js
...

index.js

import Vue from 'vue';
import Vuex from 'vuex';
import {user} from './auth/user';

Vue.use(Vuex);

/* eslint-disable no-new */
const store = new Vuex.Store({
  modules: {
    user
  },
});

export default store;

Within the user store, various constants and state variables are defined in its state property. The challenge lies in accessing these state properties internally within the store. In simpler terms, the structure of the user store file could resemble the following:

user.js

export const user = {
  namespaced: true,

  state: {

    // An example constant assigned to user.state.constants.SOME_CONST
    constants: {
      SOME_CONST: 'testString'
    },

    someOtherStateProp: {

      // Various attempts to access the above constant result in ReferenceError's
      test1: this.state.constants.SOME_CONST,
      test2: user.state.constants.SOME_CONST,
      test3: state.constants.SOME_CONST,
      test4: constants.SOME_CONST,
      test5: SOME_CONST
      // ... numerous other failed attempts 
    }
  }
};

The ultimate question remains - how can one correctly reference user.state.constants.SOME_CONST from

user.state.someOtherStateProp.test1
? Delving into the depths of basic understanding may hold the key to unraveling this mystery.

Answer №1

If you want to easily access constants in your module, one way is to declare the CONSTANTS object before exporting and reference them like this:

const CONSTANTS = {
    SOME_CONST: 'testString'
}

export const user = {
  namespaced: true,

  state: {

    // Assign a hardcoded string to user.state.constants.SOME_CONST
    constants: CONSTANTS,

    // Another property where I would like to reference the constant above

    someOtherStateProp: {

      test1: CONSTANTS.SOME_CONST,
    }
  }
}; 

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