Passing props that is an array to 2 different components - vue-component

This is my 3rd day working with Vue CLI, and I want to pass props that is an array to 2 different components. The components are called Products and Modal. The Modal component is dependent on the Products component. When I pass props to both components inside my App.vue, I don't want both components to render in my App.vue. Like I said, my Modal component is dependent on my Products component.
My overall goal is to display the product title, photo, and description in my modal.
The issue I have is I make a get request in my App.vue, which i fill an empty array and then pass that to Products component. If i pass the array as props to both Products and Modal, I will get an extra modal to render at app level which does make sense, but I don't want that.
Im still getting used to how Vue works and tips or help would be much appreciated.
This could be a very obvious answer that i'm just overlooking, but i'm learning, so please understand that.
App.Vue (I make my get request here and fill an empty array to then have that array passed down as props to the two components):
<template>
<div id="app">
<all-products v-bind:newProductsArray="newProductsArray"></all-products>
</div>
</template>
<script>
//imports
import Vue from 'vue'
import AllProducts from './components/AllProducts.vue'
import Modal from './components/Modal.vue'
//import so I can use vue resource for an http request
import VueResource from 'vue-resource'
Vue.use(VueResource)
//export components to be rendered by main.js then by the DOM
export default {
components: {
'all-products': AllProducts
},
data() {
return {
//empty products array to be filled after get request
products: [],
//declare new array to be set to products array, then passed as props. I do this because without another array,
//all products component will receiev an empty array before it can be filled by the http request.
newProductsArray: []
}
},
//request to retrieve all products from API using Created
created() {
//http request using vue resource from dependencies
this.$http.get('https://tap-on-it-exercise-backend.herokuapp.com/products').then(function(data) {
//fill products array by grabbing the data, slicing ot, then setting it to products array
this.products = data.body.slice(0, data.body.length)
//set products array to the new array to be passed down as props to all products component.
this.newProductsArray = this.products
})
}
}
</script>
Product component (This component receives props from app.vue):
<template>
<div class="products">
<h1 class="all-products">All Products</h1>
<div v-for="product in newProductsArray" :key="product.id" class="single-product">
<div class="product-container">
<div class="row">
<div class="col-md-8 center-block">
<div class="title">{{product.title}}</div>
<img class="images" :src="product.photo_url">
<div class="price">${{product.price}}</div>
<modal/>
</div>
</div>
</div>
</div>
</div>
</template>
<script>
//imports
import Vue from 'vue'
import Modal from './Modal.vue'
//import bootstrap to be used to style buttons and modal.
import BootstrapVue from 'bootstrap-vue'
Vue.use(BootstrapVue)
export default {
//receive new products array as props from app
props: ['newProductsArray'],
components: {
'modal': Modal
},
data() {
return {
//set modal show to false by default
modalShow: false
}
},
methods: {
showModal() {
//toggle modal to show
this.modalShow = true
},
closeModal() {
//toggle modal to close
this.modalShow = false
}
},
}
</script>
Modal component (I want to receive the same props that products received)
<template>
<div>
<b-button #click="modalShow = !modalShow">Show Product Info</b-button>
<b-modal v-model="modalShow" title="title">
<div class="modal-body">
<img class="img-responsive" style="margin:0 auto;" src="http://placehold.it/300x340" alt="">
</div>
<p class="product-description">Description</p>
<div slot="modal-footer" class="w-100">
<b-button size="md" class="float-right" variant="warning" #click="modalShow=false">Close</b-button>
<b-button size="md" class="float-right" variant="primary" #click="modalShow=false">Like</b-button>
</div>
</b-modal>
</div>
</template>
<script>
export default {
props: ['newProductsArray'],
data() {
return {
modalShow: false
}
}
}
</script>

Related

Vue - requests and watch data on unmounted components

I'm new to vue and strugling with some props and attributes.
I have a vue application where the main app is calling three different components:
Navbar,
Sidebar
MapContainer
In Navbar user will fill a selector with information about city and states. After user presses search, the list of results will then show up in the Sidebar menu.
Sidebar itself is a simple component carrying only a router-view for it's children components which are Results and Details
Results will receive the result of the search performed in the Navbar component. When user clicks any item in the Results component, Sidebar will then load Details taking the place of Results with detailed information about that place.
the problem is that the data used to make the request(city and states) comes from the first component navbar. I'm passing this data to sub-components using vue-router params option. When component Results gets unmounted, I lost all the data that was passed, even adding a Watch couldn'd fix the problem and thus can't return back to the previous page. Even adding a Watch couldn'd fix the problem. What's the proper way to handle data across components that area unmounted?
Navbar.vue
<template>
<div class="navbar">
<div class="logo">
Logo
</div>
<div class="middle">
<div class="flex-selectors">
<div class="navbar-options">
<select v-model="state_id" class="main-selectors" #click="load_cities">
<option v-for="state in states" :value="state.state_id" :key="state">
{{ state.state }}
</option>
</select>
<select v-model="city_id" class="main-selectors">
<option v-for="city in cities" :value="city.city_id" :key="city">
{{ city.city }}
</option>
</select>
</div>
<div class="search">
<button #click="seach">
<router-link :to="{name: 'results', params: {state: state_id, city: city_id} }" aria-current="page" title="Resultados">
<div>Search</div>
</router-link>
</button>
</div>
</div>
</div>
</template>
Sidebar.vue
<template>
<div class="sidebar">
<router-view></router-view>
</div>
</template>
Results.vue
<template>
<div v-if="areas.length">
<router-link :to="{name: 'details' }" tag="div" class="container" #click="load(area)" v-for="area in areas" :key="area" :value="area">
<!-- BUNCH OF DIVS AND V-FOR -->
</router-link>
</div>
<div v-else>
NA
</div>
</template>
<script>
export default {
data() {
return {
state_id: this.$route.params.state,
city_id: this.$route.params.city,
areas: [],
}
},
methods: {
search(state_id, city_id) {
load_areas.get(state_id, city_id).then(
result => {
this.areas = result.data
}
)
}
},
mounted() {
this.emitter = inject('emitter')
this.searchAreas(this.state_id, this.city_id)
},
created() {
this.$watch(
() => this.$route.params,
(toParams, previousParams) => {
this.searchAreas(toParams.state, toParams.city)
}
)
},
watch: {}
}
</script>
What's the proper way to handle data across components that are
unmounted?
You cannot access data from an unmounted component.
When multiple components need to access or modify the same data, a good option to look into is state management. Pinia is the new official library recommendation for state management.
Instead of passing data through vue-router params, create a store for it. Set results of your search query from Navbar component and access it in Results component. When Results component gets unmounted, you won't lose the data.

VUE3.JS - Modal in a loop

I have a GET request in my home.vue component.
This query allows me to get an array of objects.
To display all the objects, I do a v-for loop and everything works fine.
<div class="commentaires" v-for="(com, index) of coms" :key="index">
My concern is that I want to display an image by clicking on it (coms[index].imageUrl), in a modal (popup).
The modal is displayed fine but not with the correct image, i.e. the modal displays the last image obtained in the loop, which is not correct.
Here is the full code of my home.vue component
<template>
<div class="container">
<div class="commentaires" v-for="(com, index) of coms" :key="index">
<modale :imageUrl="com.imageUrl_$this.index" :revele="revele" :toggleModale="toggleModale"></modale>
<img class="photo" :src=""" alt="image du commentaire" #click="toggleModale">
</div>
</div>
</template>
<script>
//import axios from "axios";
import axios from "axios";
import Modale from "./Modale";
export default {
name: 'HoMe',
data() {
return {
coms: [],
revele: false
}
},
components: {
modale: Modale
},
methods: {
toggleModale: function () {
this.revele = !this.revele;
},
</script>
Here is my modale.vue component
<template>
<div class="bloc-modale" v-if="revele">
<div class="overlay" #click="toggleModale"></div>
<div class="modale card">
<div v-on:click="toggleModale" class="btn-modale btn btn-danger">X</div>
<img :src=""" alt="image du commentaire" id="modal">
</div>
</div>
</template>
<script>
export default {
name: "Modale",
props: ["revele", "toggleModale", "imageUrl"],
};
</script>
I've been working on it for 1 week but I can't, so thank you very much for your help...
in your v-for loop you're binding the same revele and toggleModale to every modal. When there is only one revele then any time it's true, all modals will be displayed. It's therefore likely you're actually opening all modals and simply seeing the last one in the stack. You should modify coms so that each item has it's own revele, e.g.:
coms = [
{
imageUrl: 'asdf',
revele: false
},
{
imageUrl: 'zxcv',
revele: false
},
{
imageUrl: 'ghjk',
revele: false
}
];
then inside your v-for:
<modale
:image-url="com.imageUrl"
:revele="com.revele"
#toggle-modale="com.revele = false"
></modale>
<img class="photo" :src=""" alt="image du commentaire" #click="com.revele = true">
passing the same function as a prop to each modal to control the value of revele is also a bad idea. Anytime a prop value needs to be modified in a child component, the child should emit an event telling the parent to modify the value. Notice in my code snippet above I replaced the prop with an event handler that turns the revele value specific to that modal to false. Inside each modal you should fire that event:
modale.vue
<div class="btn-modale btn btn-danger" #click="$emit('toggle-modale')">
X
</div>
This way you don't need any function at all to control the display of the modals.

How in Vue.js could I load images once the route loads without displaying them yet?

I am trying to add a transition of 2 png into an png in the background, and be able to switch between different scenarios ( like living-room, dining-room etc). Once I click the element that select which area of the house I am choosing, the images gets fetched but because it takes some time to load, the transition doesn't happen and they just appear on top of the image on the background without transition smoothly from the side. I need a way to load the all the images once the route gets rendered, or maybe if you could give me another solution for the problem I'm happy to hear it.
This is the template
<template>
<div>
<div v-for="item in painting" :key="item.id" class="showroom">
<div class="setting">
<h1>{{ item.name }}</h1>
<h3>Choose a room:</h3>
<div v-for=" (room, idx) in rooms" :key="idx" id="roomSelection">
<img id="roomSelector" :src="room.roomview" #click="showRoom(room)">
<p>{{ room.name }}</p>
<br>
</div>
<p>Choose a wall color: <span id="colorPicker" :style="{backgroundColor: color}"><input type="color" id="base" v-model="color"></span></p>
<router-link to="/painting"><i class="fas fa-arrow-left"></i></router-link>
</div>
<div class="display">
<div :style="{backgroundColor: color}" class="wall">
<img :src="item.img">
</div>
<div class="forniture">
<transition name="slideIn">
<div v-for=" room in roomToShow" :key="room" class="setForniture">
<img class="left" :id="room.space1" :src="room.forniture1">
<img class="left" :id="room.space2" :src="room.forniture2">
</div>
</transition>
</div>
</div>
</div>
</div>
</template>
This is the script
<script>
import { mapGetters } from 'vuex'
import sofa from '../assets/sofa.png'
import lamp from '../assets/lamp.png'
import table from '../assets/table.png'
import cabinet from '../assets/cabinet.png'
import chair from '../assets/chair.png'
import sidetable from '../assets/sidetable.png'
import livingroom from '../assets/livingroom.png'
import diningroom from '../assets/diningroom.png'
import lounge from '../assets/lounge.png'
export default {
data(){
return{
color: '#243E36',
rooms: [
{ name: "lounge", space1: 'lounge1', space2: 'lounge2', forniture1: chair, forniture2:sidetable, roomview: lounge},
{ name: "livingroom" , space1: 'livingroom1', space2: 'livingroom2', forniture1:sofa, forniture2:lamp, roomview: livingroom },
{ name: "diningroom" , space1: 'diningroom1', space2: 'diningroom2', forniture1: table, forniture2: cabinet, roomview: diningroom }
],
roomToShow: [],
}
},
computed: {
...mapGetters([
'showPainting',
'forSale',
'painting'
]),
},
methods: {
showRoom(room) {
setTimeout( () => {
this.roomToShow.shift();
this.roomToShow.push(room);
}, 100)
}
}
</script>
The easiest way to solve this issue is to just hide the images with CSS but nevertheless load all from the beginning (render the elements). You can do that by dynamically adding a class to the currently visible image with :class="".
A more complex solution, which gives you also a callback for when the images are loaded, is to create a new Image() for all images and react to onload/onerror. Like this, you can load all the images in the beginning with JS abd without changing the HTML. Here is an example for this use case: How to create a JavaScript callback for knowing when an image is loaded?

Pushing data to object in different component using POST

TL;DR I want to show submitted posts instantly instead of having to refresh my page
Using the Wordpress REST API I am able to create a new post without any issue. The post is being displayed as soon as the page refreshes, so what I want to do is update the posts object in my Hello.vue file as soon as I create that post so I don't need to refresh to show my newest posts.
I'm not really sure where to start - I've removed all of the experiments I've done so far (importing Post in Create, defining props, pushing to an array, reading about object reactivity on the official Vue documentation, nothing helped).
My App.js consists of the <router> object which shows Hello.vue and a component called Create which displays the Create.vue component. This is how my app currently looks like:
My App.vue file:
<template>
<div id="app">
<section class="posts">
<router-view></router-view>
<create></create>
</section>
</div>
</template>
<script>
import Create from '#/components/Create.vue'
export default {
name: 'app',
components: {
Create
}
}
</script>
<style lang="scss">
#import '../src/assets/styles/style.scss'
</style>
My Hello.vue which displays all the posts:
<template>
<div>
<section class="posts__Feed">
<ul class="posts__List">
<post v-for="item in posts" :item="item" :key="item.id"></post>
</ul>
</section>
</div>
</template>
<script>
var postsUrl = '/wp-json/wp/v2/posts/'
import Post from '#/components/Post.vue'
export default {
name: 'hello',
props: ['responseData'],
components: {
Post
},
data () {
return {
posts: []
}
},
beforeCreate () {
this.$http.get(postsUrl).then((response) => {
this.posts = response.data
})
}
}
</script>
And finally, the Create.vue file which creates the post:
<template>
<div>
<section class="posts__Create">
<form class="posts__CreateForm" v-on:submit="createPosts">
<div class="posts__CreateFormWrapper" v-bind:class="{ 'is-Loading': loading }">
<p>
<input v-model="formInfo.title" type="text" name="title" id="title" placeholder="Name" :disabled="formSent">
</p>
<p>
<textarea v-model="formInfo.content" name="content" id="content" cols="20" rows="10" maxlength="140" placeholder="Message" :disabled="formSent"></textarea>
</p>
<p>
<button :disabled="formSent">Send</button>
</p>
</div>
</form>
</section>
</div>
</template>
<script>
var postsUrl = '/wp-json/wp/v2/posts/'
export default {
name: 'create',
data () {
return {
formInfo: [],
responseData: [],
loading: false,
formSent: false
}
},
methods: {
createPosts (e) {
e.preventDefault()
var info = this.formInfo
// Check if fields are empty
if (this.formInfo.title && this.formInfo.content) {
this.loading = true
// POST
this.$http.post(postsUrl, info).then((response) => {
this.formSent = true
this.loading = false
// get body data
this.responseData = response.data
})
}
} // EOF createPosts
}
}
</script>
Any help would be much appreciated!
I ended up using an event bus as suggested by wotex. First, I've createad a file called bus.js with the below code:
import Vue from 'vue'
export const EventBus = new Vue()
Next, import bus.js to both .vue layouts using:
import { EventBus } from '#/bus.js'
Now emit the event as soon as a new post is created (this is sitting in my axios POST request inside the Create.vue file):
EventBus.$emit('newPost', this.responseData)
And finally, check if the event has happened on the other end (my Hello.vue file):
EventBus.$on('newPost', function (postData) {
Thanks for pointing me in the right direction!

Meteor, Flow Router, and React: How to get FlowRouter.subsReady() function to be reactive in render

I am trying to create a pattern so that all the subscriptions are ready before I load the main page. Similar to Iron Router waitOn.
Take a look at this react component:
export const PageContainer = React.createClass({
render() {
return (
<div id="content-box">
<div className="banner banner-primary">
<div className="page_title pull-left">
{this.props.pageName}
</div>
</div>
<div>
{ FlowRouter.subsReady() ? this.props.page : (
<div> Loading .... </div>
)
}
</div>
</div>
);
}
});
as you can see I am using the FlowRouter.subsReady() helper to render the page or the loading text.
The problem is that this is not reactive. It just renders once but does not update and show the page once the subscription is ready.
How can I get this to be reactive?
What is the best way to use Flow Router's subscription management with React. I have a base layout and want to show loading sign before loading the page main. If I could get this function to be reactive it should work just fine.
UPDATE:
It seems like I have to attach the helper, FlowRouter.subsReady() to the get Meteor data function
export const PageContainer = React.createClass({
mixins: [ ReactMeteorData ],
getMeteorData() {
return {
isLoading: FlowRouter.subsReady()
}
},
render() {
return (
<div id="content-box">
<div className="banner banner-primary">
<div className="page_title pull-left">
{this.props.pageName}
</div>
<i className="fa fa-question-circle help-icon pull-right"></i>
</div>
<div>
{ this.data.isLoading ? this.props.page : (
<div> Loading ... </div>
)
}
</div>
</div>
);
}
});
It seems to be working now. Is this the way to do it?
You accessed the problem in the wrong direction. You don't really need to check the subsReady of FlowRouter when using meteor with react. Just install the mixin ReactMeteorData and set the this.data properly, it will reactively render the Dom. More details here
React render is not reactive. The Dom is only re-rendered when the props or state of the component is changed

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