v-model and Composition API with provide and inject - vue.js

Question

I would like to know how can I show the value from composition API with v-model and Composition API.
Currently I have my store.js :
import { reactive, toRefs, computed } from "vue";
export default function users() {
// State
const state = reactive({
userForm: null,
});
// Mutations
const UPDATE_USER_FORM = (user) => {
state.userForm = user;
};
// Actions
const updateUserForm = (payload) => {
UPDATE_USER_FORM(payload);
};
// Getters
let getUserForm = computed(() => state.userForm);
return {
...toRefs(state),
updateUserForm,
getUserForm
}
}
I provide my store in createApp :
import users from '#/Stores/users';
...
let myApp = createApp({ render: () => h(app, props) });
myApp.provide('userStore', users());
I inject my store in my component :
setup(props, context) {
const userStore = inject('userStore');
return { userStore }
}
In the template I use it, but I don't see the value :
I try this :
<div>userForm : {{userStore.userForm}}</div> // see the user object
<div>userForm with value : {{userStore.userForm.value.firstname}}</div> // see the firstname value
<div>userForm no value : {{userStore.userForm.firstname}}</div> // don't see the firstname
<input v-model="userStore.userForm.firstname"> // don't see the firstname
I would like to use the value in the input...

Answer 1

First thing that you should do is to put the state outside the composable function in order to be available for all components as one instance :
import { reactive, toRefs, computed } from "vue";
// State
const state = reactive({
userForm: null,
});
export default function users() {
// Mutations
...
return {
state,
updateUserForm,
getUserForm
}
}
second thing is to import the composable function in any component you want since the inject/provide could have some reactivity issues :
<input v-model="state.userForm.firstname">
...
import users from './store/users'
....
setup(props, context) {
const {state,updateUserForm,getUserForm} = users();
return { state }
}