I am having one root ponent know as App.vue. and another ponent named as FileUploaderParent.vue. I am calling a dispatch promise to store the data in the store. I am calling dispatch under mounted lifecycle hook.
On the other side, I am trying to access stored user data in the mounted function of a different ponent. It shows the error of undefined
I know, a work around can be to call same dispatch promise on the mounted function. But, It feels like a hack and the dispatch call is getting redundant.
Here is the code for App.vue:
<template>
<v-app>
<v-navigation-drawer v-model="drawer" app temporary >
<v-img :aspect-ratio="16/9" src=".jpg">
<v-layout pa-2 column fill-height class="lightbox gray--text">
<v-spacer></v-spacer>
<v-flex shrink>
<!-- <div class="subheading">{{this.$store.getters.userData.name}}</div> -->
<!-- <div class="body-1">{{this.$store.getters.userData.email}}</div> -->
</v-flex>
</v-layout>
</v-img>
<v-list>
<template v-for="(item, index) in items">
<v-list-tile :href="item.href" :to="{name: item.href}" :key="index">
<v-list-tile-action>
<v-icon light v-html="item.icon"></v-icon>
</v-list-tile-action>
<v-list-tile-content>
<v-list-tile-title v-html="item.title"></v-list-tile-title>
</v-list-tile-content>
</v-list-tile>
</template>
</v-list>
</v-navigation-drawer>
<v-toolbar color="white" light :fixed=true>
<v-toolbar-side-icon @click.stop="drawer = !drawer"></v-toolbar-side-icon>
<v-img :src="require('@/assets/mad_logo.png')" max-width="80px" max-height="41px" />
<v-toolbar-title class="black--text justify-center" > <h1>MeshApp</h1></v-toolbar-title>
<v-spacer></v-spacer>
<v-avatar color="primary">
<!-- <span class="white--text headline">{{this.avatar.slice(0,2)}}</span> -->
</v-avatar>
</v-toolbar>
<v-content style="margin-top: 60px;">
<v-fade-transition mode="out-in">
<router-view></router-view>
</v-fade-transition>
</v-content>
</v-app>
</template>
<script>
export default {
name: 'app',
ponents: {
},
data() {
return {
avatar: '',
drawer: false,
items: [
{
href: 'home',
router: true,
title: 'home',
icon: 'grid_on',
},
{
href: 'view_volunteers',
router: true,
title: 'View Volunteer',
icon: 'group'
},
{
href: 'profile',
router: true,
title: 'profile',
icon: 'account_circle',
},
{
href: 'logout',
router: true,
title: 'Logout',
icon: 'toggle_off',
}
]
}
},
props: [],
mounted() {
this.$store.dispatch('getUserData').
then(() => {
let findAvatar = this.$store.getters.userData.name.split(" ")
let createAvatar = ''
for(let i = 0; i < findAvatar.length; i++) {
createAvatar = createAvatar + findAvatar[i].slice(0,1)
}
this.avatar = createAvatar
console.log(this.avatar)
// this.$store.dispatch('getUserId', id)
})
}
}
</script>
<style scoped>
v-content {
margin-top: 60px !important;
}
</style>
Here is the code for FileUploaderParent.vue:
<template>
<v-layout class="text-xs-center ">
<v-flex>
<image-input v-model="avatar">
<div slot="activator">
<v-avatar color = "primary" size="150px" v-ripple v-if="!avatar" class=" mb-3">
<h1 class="white--text"><span>{{this.defaultAvatar}}</span></h1>
</v-avatar>
<v-avatar size="150px" v-ripple v-else class="mb-3">
<img :src="avatar.imageURL" alt="avatar">
</v-avatar>
</div>
</image-input>
<v-slide-x-transition>
<div v-if="avatar && saved == false">
<!-- Stores the Image and changes the loader -->
<v-btn class="primary" @click="uploadImage" :loading="saving">Save Avatar</v-btn>
</div>
</v-slide-x-transition>
</v-flex>
</v-layout>
</template>
<script>
import ImageInput from './FileUploaderChild.vue'
export default {
name: 'app',
data () {
return {
defaultAvatar: '',
avatar: null,
saving: false,
saved: false
}
},
mounted() {
this.$store.dispatch('getUserData').
then(() => {
let findAvatar = this.$store.getters.userData.name.split(" ")
let createAvatar = ''
for(let i = 0; i < findAvatar.length; i++) {
createAvatar = createAvatar + findAvatar[i].slice(0,1)
}
this.defaultAvatar = createAvatar
})
},
ponents: {
ImageInput: ImageInput
},
watch:{
avatar: {
handler: function() {
this.saved = false
},
deep: true
}
},
methods: {
uploadImage() {
this.saving = true
setTimeout(() => this.savedAvatar(), 1000)
},
savedAvatar() {
this.saving = false
this.saved = true
}
}
}
</script>
<style>
</style>
This is how the store looks like:
store.js
actions: {
getUserData(context) {
return new Promise((resolve, reject) => {
axios.get('/'+this.state.userId, {
headers: {
'Content-Type': 'application/json'
},
auth: {
username: 'someusername',
password: 'pass'
}
}).
then(response => {
contextmit('storeUserData', response.data.data.users)
resolve(response); // Let the calling function know that http is done. You may send some data back
}).catch(error => {
reject(error);
})
})
}
},
mutations: {
storeUserData(state, data) {
state.userData = data
}
}
This is how the error looks like:
How do i access store data in FileUploaderParent.vue under mounted function?
I am having one root ponent know as App.vue. and another ponent named as FileUploaderParent.vue. I am calling a dispatch promise to store the data in the store. I am calling dispatch under mounted lifecycle hook.
On the other side, I am trying to access stored user data in the mounted function of a different ponent. It shows the error of undefined
I know, a work around can be to call same dispatch promise on the mounted function. But, It feels like a hack and the dispatch call is getting redundant.
Here is the code for App.vue:
<template>
<v-app>
<v-navigation-drawer v-model="drawer" app temporary >
<v-img :aspect-ratio="16/9" src="https://image.freepik./free-vector/spot-light-background_1284-4685.jpg">
<v-layout pa-2 column fill-height class="lightbox gray--text">
<v-spacer></v-spacer>
<v-flex shrink>
<!-- <div class="subheading">{{this.$store.getters.userData.name}}</div> -->
<!-- <div class="body-1">{{this.$store.getters.userData.email}}</div> -->
</v-flex>
</v-layout>
</v-img>
<v-list>
<template v-for="(item, index) in items">
<v-list-tile :href="item.href" :to="{name: item.href}" :key="index">
<v-list-tile-action>
<v-icon light v-html="item.icon"></v-icon>
</v-list-tile-action>
<v-list-tile-content>
<v-list-tile-title v-html="item.title"></v-list-tile-title>
</v-list-tile-content>
</v-list-tile>
</template>
</v-list>
</v-navigation-drawer>
<v-toolbar color="white" light :fixed=true>
<v-toolbar-side-icon @click.stop="drawer = !drawer"></v-toolbar-side-icon>
<v-img :src="require('@/assets/mad_logo.png')" max-width="80px" max-height="41px" />
<v-toolbar-title class="black--text justify-center" > <h1>MeshApp</h1></v-toolbar-title>
<v-spacer></v-spacer>
<v-avatar color="primary">
<!-- <span class="white--text headline">{{this.avatar.slice(0,2)}}</span> -->
</v-avatar>
</v-toolbar>
<v-content style="margin-top: 60px;">
<v-fade-transition mode="out-in">
<router-view></router-view>
</v-fade-transition>
</v-content>
</v-app>
</template>
<script>
export default {
name: 'app',
ponents: {
},
data() {
return {
avatar: '',
drawer: false,
items: [
{
href: 'home',
router: true,
title: 'home',
icon: 'grid_on',
},
{
href: 'view_volunteers',
router: true,
title: 'View Volunteer',
icon: 'group'
},
{
href: 'profile',
router: true,
title: 'profile',
icon: 'account_circle',
},
{
href: 'logout',
router: true,
title: 'Logout',
icon: 'toggle_off',
}
]
}
},
props: [],
mounted() {
this.$store.dispatch('getUserData').
then(() => {
let findAvatar = this.$store.getters.userData.name.split(" ")
let createAvatar = ''
for(let i = 0; i < findAvatar.length; i++) {
createAvatar = createAvatar + findAvatar[i].slice(0,1)
}
this.avatar = createAvatar
console.log(this.avatar)
// this.$store.dispatch('getUserId', id)
})
}
}
</script>
<style scoped>
v-content {
margin-top: 60px !important;
}
</style>
Here is the code for FileUploaderParent.vue:
<template>
<v-layout class="text-xs-center ">
<v-flex>
<image-input v-model="avatar">
<div slot="activator">
<v-avatar color = "primary" size="150px" v-ripple v-if="!avatar" class=" mb-3">
<h1 class="white--text"><span>{{this.defaultAvatar}}</span></h1>
</v-avatar>
<v-avatar size="150px" v-ripple v-else class="mb-3">
<img :src="avatar.imageURL" alt="avatar">
</v-avatar>
</div>
</image-input>
<v-slide-x-transition>
<div v-if="avatar && saved == false">
<!-- Stores the Image and changes the loader -->
<v-btn class="primary" @click="uploadImage" :loading="saving">Save Avatar</v-btn>
</div>
</v-slide-x-transition>
</v-flex>
</v-layout>
</template>
<script>
import ImageInput from './FileUploaderChild.vue'
export default {
name: 'app',
data () {
return {
defaultAvatar: '',
avatar: null,
saving: false,
saved: false
}
},
mounted() {
this.$store.dispatch('getUserData').
then(() => {
let findAvatar = this.$store.getters.userData.name.split(" ")
let createAvatar = ''
for(let i = 0; i < findAvatar.length; i++) {
createAvatar = createAvatar + findAvatar[i].slice(0,1)
}
this.defaultAvatar = createAvatar
})
},
ponents: {
ImageInput: ImageInput
},
watch:{
avatar: {
handler: function() {
this.saved = false
},
deep: true
}
},
methods: {
uploadImage() {
this.saving = true
setTimeout(() => this.savedAvatar(), 1000)
},
savedAvatar() {
this.saving = false
this.saved = true
}
}
}
</script>
<style>
</style>
This is how the store looks like:
store.js
actions: {
getUserData(context) {
return new Promise((resolve, reject) => {
axios.get('http://someurl.in/api/v1/users/'+this.state.userId, {
headers: {
'Content-Type': 'application/json'
},
auth: {
username: 'someusername',
password: 'pass'
}
}).
then(response => {
context.mit('storeUserData', response.data.data.users)
resolve(response); // Let the calling function know that http is done. You may send some data back
}).catch(error => {
reject(error);
})
})
}
},
mutations: {
storeUserData(state, data) {
state.userData = data
}
}
This is how the error looks like:
How do i access store data in FileUploaderParent.vue under mounted function?
3 Answers
Reset to default 1The code you have written seems right, but if you still need an answer you can use watch on store
this.$store.watch(() => this.$store.state.userData, async () => {
//do your code here
});
How about adding a check that determines if an API call is required:
actions: {
getUserData(context) {
return new Promise((resolve, reject) => {
// Be sure to set the default value to `undefined` under the `state` object.
if (typeof this.state.userData === 'undefined') {
axios
.get('http://someurl.in/api/v1/users/' + this.state.userId, {
headers: {
'Content-Type': 'application/json'
},
auth: {
username: 'someusername',
password: 'pass'
}
})
.then(response => {
context.mit('storeUserData', response.data.data.users);
resolve(response.data.data.users);
})
.catch(error => {
reject(error);
});
}
else {
resolve(this.state.userData);
}
})
}
}
The this.$store.getters refers to a getter in your Vuex store. You have no getters in your Vuex store - at least none can be seen in your sample. (https://vuex.vuejs/guide/getters.html)