I'm trying to pass an array of object to a childComponent as prop but when I add an object in it, it doesn't render. (Note: I'm working on vuejs 2.6)
I suppose it has a link with the "monitoring" of the items of the array and not the array itself? Stuff is that if I do not pass the prop and use the default value instead, it's working perfectly. I think I'm missing something here. Could someone help me ?
By curiosity is this kind of behavior still stand with vue3js ?
As you can see below:
App.vue:
<template>
<div id="app">
<Card
v-for="user in users"
:key="user.userId"
:userId="user.userId"
:username="getUsernameFromUserId(user.userId)"
:links="getUserLinksFromUserId(user.userId)"
/>
</div>
</template>
<script>
import Card from "./components/Card.vue";
export default {
name: "App",
components: {
Card,
},
data: function () {
return {
users: [
{ userId: 1, name: "Bob" },
{ userId: 2, name: "Alice" },
{ userId: 3, name: "Eliot" },
],
links: [
{ userId: 1, link: "hello->world" },
{ userId: 1, link: "world->!" },
{ userId: 3, link: "hello->back" },
{ userId: 4, link: "hello->you" },
],
};
},
methods: {
getUsernameFromUserId: function (userId) {
return this.users.filter((obj) => obj.userId == userId)?.[0]?.name ?? "Not found";
},
getUserLinksFromUserId: function (userId) {
return this.links.filter((obj) => obj.userId == userId);
},
},
};
</script>
Card.vue
<template>
<div class="card">
<h1>{{ username }}</h1>
<button @click="addLink">Add One link</button><br><br>
<span v-if="links.length == 0">No links</span>
<div class="links">
<Link v-for="link in links" :key="links.indexOf(link)" :link="link"></Link>
</div>
</div>
</template>
<script>
import Link from '../components/Link'
export default {
components:{Link},
props: {
userId: Number,
username: String,
links: { type: Array, default: () => [], required: false },
},
methods:{
addLink: function(){
this.links.push({
userId: this.userId,
link: 'newlink->cool'
});
}
}
}
</script>
Link.vue
<template>
<div>
<span>UserId: {{ this.link.userId }} Link: {{ this.link.link }</span>
</div>
</template>
<script>
export default {
props: {
link: { type: Object, default: () => [], required: false },
},
};
</script>
