VueJs access data in array - javascript

I find myself facing a problem.
I need to retrieve a parameter in the url to display data dynamically but I can't find the solution.
what parameter must enter in state.event.aftermovies [] to have access to the id of my object.
If anyone has a solution, thanks
<template>
<div>
<div class="container text-center">
<div>
<h1>{{ aftermovie.id }}</h1>
<h1>{{ aftermovie.name }}</h1>
<h1>{{ aftermovie.slug }}</h1>
<h1>{{ aftermovie.video }}</h1>
</div>
</div>
</div>
</template>
<script>
import { mapState } from 'vuex'
export default {
async fetch({ store, error, params }) {
try {
await store.dispatch('fetchEvent', params.id)
} catch (e) {
error({
statusCode: 503,
message: 'Unable to fetch event #' + params.id,
})
}
},
//Here is my problem
computed: mapState({
aftermovie: (state) => state.event.aftermovies[??????????????????]
}),
head() {
return {
title: this.aftermovie.name
}
}
}
</script>
and I would like to access the id of my object
event:Object
address:"Belgium"
aftermovies:Array[1]
0:Object
event_id:1
festival_id:""
id:4
name:"reverze 2020"
slug:"reverze-2020"
what is the right way ??

Assuming aftermovies is an array containing objects like:
aftermovies: [{
event_id:1,
festival_id:"",
id:4,
name:"reverze 2020",
slug:"reverze-2020"
}]
you could do something like aftermovies[0].id
Here is a jsfiddle example

Related

Data from API doesn't show up in website but shows no error vuejs + axios

I'm learning vue js right now, and trying to get API data from this site https://reqres.in/ with axios. I want to take the data like email, name and put it into a card. It shows no error because the card is looping, but the data itself, like email and name, doesn't show up. How do I fix this?
here's is my script
data() {
return {
users: [],
};
},
methods: {
setUsers(data) {
this.users = data;
},
},
mounted() {
axios
.get("https://reqres.in/api/users")
.then((response) => this.setUsers(response.data))
.catch((error) => console.log("Gagal : ", error))
},
my card
<div class="row mb-3">
<div class="col md-2 mt-4" v-for="user in users" :key="user.id">
<card :user="user"/>
</div>
</div>
and my card components
<template>
<div>
<h2>Card API {{user.email}}</h2>
</div>
</template>
<script>
export default {
name: 'card',
props: ['user']
};
</script>
the output on my site is just 'Card API' looping for 6 times because the total data is 6 but not the email. Please help, thank you
The response.data you get is an object you fetched from the API. You need to access the "data" property of this object:
.then((response) => this.setUsers(response.data.data))

Access nested nodes with GraphQL (Nuxt)

i’m experiencing some issues with Apollo, GraphQL and Nuxt. i don’t know if it’s especially related to Nuxt though, or with vue.
i’m trying to use WordPress as headless CMS via WP-GraphQL plugin. here’s my query
WP-GraphQL interface
i basically created a graphql folder with a posts.js file inside, that contains my query
import gql from 'graphql-tag'
export const myQuery = gql`
query myQuery {
posts {
nodes {
id
title
date
slug
author {
node {
name
}
}
featuredImage {
node {
uri
sourceUrl
srcSet
}
}
}
}
}
`
then, all i need to do is to print my data in the template. here's the script part first.
<script>
import { myQuery } from '~/graphql/posts'
export default {
data() {
return {
posts: [],
}
},
apollo: {
posts: {
prefetch: true,
query: myQuery,
},
},
watch: {
async $route() {
await this.$nuxt.refresh()
window.scrollTo(0, 0)
},
},
transition: 'home',
async mounted() {
this.posts = await this.$apollo.query({ query: myQuery })
this.posts = this.posts.data.posts.nodes
this.loading = false
}
</script>
and then comes the template :
<template>
<section class="featured-projects">
<div class="featured-projects__wrapper">
<article v-for="post in posts" :key="post.id">
<p>{{ post.id }}</p>
<h2>{{ post.title }}</h2>
<span>{{ post.date }}</span>
</article>
</div>
</section>
</section>
</template>
everything just works!
now, i would like to print post author name as well. i first tried this :
<span>{{ post.author }}</span>
and this actually prints this :
{
"node": {
"name": "max max",
"__typename": "User"
},
"__typename": "NodeWithAuthorToUserConnectionEdge"
}
it totally makes sense, as author is an object with nested items in it. so according to what i’m being returned and following GraphQL API structure, to display post author name, think i should do something like this instead :
<span>{{ post.author.node.name }}</span>
and here’s the error i get, and i don’t know what to do to access what i want :
Cannot read property 'node' of undefined.
your problem arises from reading the data before it is loaded.
depending on your js settings you should be able to use one of the following:
<span>{{ post?.author.node.name }}</span>
or <span>{{ post ? post.author.node.name : '' }}</span>
according to the Vue Apollo documentation it could also be a problem with the duplication of the query
<script>
import { myQuery } from '~/graphql/posts'
export default {
data() {
return {
posts: [], // initialization
}
},
apollo: {
posts: {
prefetch: false, // to prevent SSR
query: myQuery,
update: data => {
console.log('overwrite posts with new data', data.posts)
return data.posts
}
},
}
}
</script>
further as there seem to be cases in which the author has more than one entry (perhaps co authors?) I would try to update the author rendering to the following:
<template>
<section class="featured-projects">
<div class="featured-projects__wrapper">
<article v-for="post in posts" :key="post.id">
<p>{{ post.id }}</p>
<div v-if="Array.isArray(post.author)">
first author is: {{ post.author[0].node.name }}
</div>
<div v-else-if="post.author">
author is: {{ post.author.node.name }}
</div>
<div v-else="post.author">
no author
</div>
</article>
</div>
</section>
</section>
</template>

Vue.js Data not Displaying in view i am trying to display todo list which just displaying blank

This is my App.vue where i have created the Data for todo list and trying to display all todo array data but nothing is showing i am stuck there and please help me to solve that problem
<template>
<div id="app">
<ToDo/>
</div>
</template>
<script>
import ToDo from './components/ToDo';
export default {
name: 'app',
components: {
ToDo
},
data ()
{
return {
todos: [
{
id: 1,
title: "TODO 1",
completed: false
},
{
id: 2,
title: "TODO 2",
completed: true
},
{
id: 3,
title:" TODO 3",
completed: false
}
]
}
}
}
</script>
This is my ToDo.vue from there i am trying to pass the todo.title to Display the title but not working
<template>
<div>
<div v-bind:key="todo.id" v-for="todo in todos" >
{{todo.title}}
</div>
</div>
</template>
<script>
export default {
name:"ToDo",
props: ["todos"]
}
</script>
You should be getting a warning in your console.
You are using a properties but not actually send it to the component.
Your template should be like this.
<template>
<div id="app">
<ToDo :todos="todos"/>
</div>
</template>
Since you're "todos" is an object you need to send it as Javascript which is the meaning of the : before the attribute.
Moreover you should definitely ensure that you are sending an Object to your component by specifying it in the definitions of your props.
props: {
todos: Object
}
you need to pass the todos into ToDo component from the app component like
<template>
<div id="app">
<ToDo :todos=todos/>
</div>
</template>

Issue trying to output WordPress post data with Vue

Can anyone tell me why I am getting an error when trying to output the post data?
I've tried adding params like title, content but nothing works. I might add that I can get it to work using the id.
<template>
<section class="container animated fadeIn">
<nuxt-link :to="{ name: 'blog' }">
Back to Blog
</nuxt-link>
<div>
<h1 class="title">
{{ post }} <!-- this returns an array of the post data -->
{{ slug }} <!-- this returns the slug -->
{{ post.title }} <!-- this returns an error _vm.post is undefined -->
</h1>
</div>
</section>
</template>
<script>
import axios from 'axios'
export default {
name: 'post',
data () {
return {
slug: this.$route.params.slug,
post: {},
error: []
}
},
asyncData ({ params }) {
return axios.get(`http://localhost/amcdwp/wp-json/wp/v2/posts/?slug=${params.slug}`)
.then((response) => {
return { post: response.data }
})
}
}
</script>
I want to output individual data like post.title. I get an error of _vm.post is undefined

Need help limiting array/optimizing axios responses

I have something like /url/{category}.
This is the code to fetch some of these on the main page:
export default {
data() {
return {
topnews:[],
newsfive:[],
categories: {
tshirts:'',
shirts:'',
shoes:'',
useful:'',
}
}
},
methods() {
async getAll(){
axios.all([
axios.get(`/topnews`),
axios.get(`/news`),
axios.get(`/tshirts`),
axios.get(`/shirts`),
axios.get(`/shoes`),
axios.get(`/useful`)])
.then(axios.spread((topnews, news, tshirts, shirts, shoes, useful) => {
news.data.length = 5;
tshirts.data.length = 5
shirts.data.length = 5
shoes.data.length = 5
useful.data.length = 5
// How to limit these appropriately?
this.newsfive = news.data;
this.topnews = topnews.data;
this.categories = {
tshirts: tshirts.data,
shirts: shirts.data,
shoes: shoes.data,
useful: useful.data,
}
})).catch(error => console.log(error))
}
}
created() {
this.getAll()
}
}
This works, but If I change the route to /tshirts and use browser back to the main page, I get:
typeerror content read-only property
Also is it possible to combine this into a single array instead of creating 7 different divs like:
<div v-for="tshirts,key in categories.tshirts" :key="categories.tshirts.slug">
<img :src="tshirts.thumb" class="img-responsive" width=100%/>
<p>{{tshirts.title}}</p>
</div>
Instead have something like a filtered computed axios response and then just use a single div?
<div v-for="item,key in categories(tshirts)" :key="categories(item.slug)">
How can I limit the axios array response size?
Create Category.vue to render only category content
<template>
<div v-for="(item, key) in category" :key="item.slug">
<img :src="item.thumb" class="img-responsive" width=100% />
<p>{{ item.title }}</p>
</div>
</template>
<script>
export default {
data() {
return {
category: { }
}
},
methods() {
getCategory() {
axios.get(`/${this.$route.params.category}`)
.then((response) => {
this.category = response.data.slice(0, 5);
}).catch(error => console.log(error));
}
}
created() {
this.getCategory()
}
}
</script>
And in App.vue add router-link to all categories
<template>
<nav>
<router-link to="{ name: 'category', params: {category: 'tshirts'} }">T-Shirts</router-link>
<router-link to="{ name: 'category', params: {category: 'shirts'} }">Shirts</router-link>
<!-- and other -->
</nav>
<main>
<router-view></router-view>
</main
</template>
Don't forger about vue-router
import Category from "./Category.vue"
routes = [
{
name: "category",
path: "/:categoryId",
component: Category
}
]

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