In Vue 2 I used to import Vue and access global properties like this (from the store):
import Vue from 'vue'
Vue.config.myGlobalProperty
According to the new documentation, in Vue 3 the global properties are declared using the app
object returned by createApp
:
const app = createApp({})
app.config.globalProperties.myGlobalProperty
And then accessed in the child component by simply calling this.myglobalProperty
But how to access that global property from the store? I tried exporting/importing the app object but it doesn't work (probably due to the app being created after its import in the store).
With Vue 2 I used to use global properties in the store like this:
Declaration in the main.js
file:
import Vue from 'vue'
Vue.config.myglobalProperty = 'value'
Usage in the store:
import Vue from 'vue'
Vue.config.myglobalProperty
Is there a good way to do that in Vue3?
I noticed a better way to provide/inject properties but it works with child component only and not with the store.
CodePudding user response:
You could pass the app
instance to a store factory:
// store.js
import { createStore as createVuexStore } from 'vuex'
export const createStore = (app) => {
return createVuexStore({
actions: {
doSomething() {
if (app.config.globalProperties.myGlobal) {
//...
}
}
}
})
}
And use it like this:
// main.js
import { createApp } from 'vue'
import { createStore } from './store'
const app = createApp({})
const store = createStore(app)
app.use(store)
app.mount('#app')
CodePudding user response:
If you do not use Vuex, etc., you can easily create your store via provide/inject on the application itself, as in the example (the example is simplified for understanding):
const createState = () => reactive({counter: 0, anyVariable: 1});
const state = createState();
const key = 'myState';
// example of reactivity outside a component
setInterval(() => {
state.counter ;
}, 1000);
const app = createApp({});
app.provide('myState', state); // provide is used on the whole application
As you can see, your own store can be completely used outside the component.
Inside components, you can use (example):
setup() {
...
const globalState = inject('myStore'); // reactive => {counter: 0, anyVariable: 1}
...
return {globalState, ...}
}
Accordingly, you can have multiple stores in multiple Vue applications.
I hope this example will help you somehow.