Fetch data in component on initiation using parameters from Vuex store - vue.js

Question

I am new to Vue and am trying to build a simple movie app, fetching data from an API and rendering the results. I want to have an incremental search feature. I have an input field in my navbar and when the user types, I want to redirect from the dashboard view to the search results view. I am unsure of how to pass the query params from the navbar to the search results view.
Here is my App.vue component
<template>
<div id="app">
<Navbar></Navbar>
<router-view/>
</div>
</template>
<script>
import Navbar from './components/Navbar.vue'
export default {
name: 'App',
components: {
Navbar
},
}
</script>
And here is my navbar component where I have the input field
<template>
<nav class="navbar">
<h1 class="logo" v-on:click="goToHome">Movie App</h1>
<input class="search-input" v-on:keyup="showResults" v-model="query" type="text" placeholder="Search..."/>
</nav>
</template>
<script>
import router from '../router/index'
export default {
data: function () {
return {
query: this.query
}
},
methods: {
goToHome () {
router.push({name: 'Dashboard'})
},
showResults () {
//here on each key press I want to narrow my results in the SearchedMovies component
}
}
}
</script>
If I use router.push to the SearchedMovies component then I am only able to pass the query as a parameter once. I thought about using Vuex to store the query and then access it from the SearchedMovies component, but surely there is a better way of doing it?
I also read about using $emit but since my parent contains all the routes, I'm not sure how to go about this.

Answer 1

You don't need to redirect user anywhere. I've made a small demo to show how one might do it. I used this navbar component as you described and emit an event from it:
const movies = {
data: [
{
id: 0,
title: 'Eraserhead',
},
{
id: 1,
title: 'Erazerhead',
},
{
id: 2,
title: 'Videodrome',
},
{
id: 3,
title: 'Videobrome',
},
{
id: 4,
title: 'Cube',
},
]
};
Vue.component('navbar', {
template: '<input v-model="filter" #input="onInput" placeholder="search">',
data() {
return {
filter: '',
};
},
methods: {
onInput() {
this.$emit('filter', this.filter);
}
}
});
// this is just a request imitation.
// just waiting for a second until we get a response
// from the datasample
function request(title) {
return new Promise((fulfill) => {
toReturn = movies.data.filter(movie => movie.title.toLowerCase().indexOf(title.toLowerCase()) !== -1)
setTimeout(() => fulfill(toReturn), 1000);
});
}
new Vue({
el: '#app',
data: {
movies: undefined,
loading: false,
filter: '',
lastValue: '',
},
methods: {
filterList(payload) {
// a timeout to prevent
// instant request on every input interaction
this.lastValue = payload;
setTimeout(() => this.makeRequest(), 1000);
},
makeRequest() {
if (this.loading) {
return;
}
this.loading = true;
request(this.lastValue).then((response) => {
this.movies = response;
this.loading = false;
});
}
},
mounted() {
this.makeRequest('');
}
})
<script src="https://unpkg.com/vue"></script>
<div id="app">
<navbar v-on:filter="filterList"></navbar>
<ul v-if="!loading">
<li v-for="movie in movies" :key="movie.id">{{ movie.title }}</li>
</ul>
<p v-else>Loading...</p>
</div>
Also jsfiddle: https://jsfiddle.net/oniondomes/rsyys3rp/
If you have any problem to understand the code above let me know.
EDIT: Fixed some bugs and added a couple of comments
EDIT2(after the comment below):
Here's what you can do. Every time user inputs something inside a navbar you call a function:
// template
<navbar v-on:input-inside-nav-bar="atInputInsideNavBar"></navbar>
// script
methods: {
atInputInsideNavBar(userInput) {
this.$router.push({
path: '/filtred-items',
params: {
value: userInput
}
})
}
}
Then inside you 'searched movies' page component you can access this value so:
this.$route.params.value // returns userInput from root component