I created a custom component and registered it. But I get in the browser a warning, which I cannot process. In my opinion it is properly registered?
vue.js:435 [Vue warn]: Unknown custom element: - did you
register the component correctly? For recursive components, make sure
to provide the "name" option.
found in
--->
Main
import GISView from './components/GISView.vue';
import VueEvents from 'vue-events';
window.Vue = Vue;
Vue.use(VueEvents)
var App = window.App = new Vue({
el: '#app',
components: {
'gisview': GISView
},
data() {
return {
eventData: {
foo: 'baz'
}
}
},
methods: {
init: function() {
this.$events.$emit("test", this.eventData);
}
}
});
Component
<template>
<div ref="map" id="map" class="google-map" style="position: relative; overflow: hidden;">
<div style="height: 100%; width: 100%; position: absolute; top: 0px; left: 0px;">
<gisview></gisview>
</div>
</div>
</template>
<script>
import GoogleMaps from '../mixins/GoogleMaps.js';
export default {
mixins: [GoogleMaps],
mounted() {
console.log("Mounted");
this.$events.$on('test', eventData => console.log("Fired"));
},
data: function() {
return {
eventData: {
foo: 'baz'
}
}
},
methods: {
initMap: function() {
map = new google.maps.Map(this.$els.map, {
center: {lat: -34.397, lng: 150.644},
zoom: 8
});
}
}
}
</script>
Usage
<div class="wrapper wrapper-content animated fadeInRight">
<div id="app">
<div class="row">
<div class="col-md-7">
<div class="ibox">
<div class="ibox-title">GIS</div>
<div class="ibox-content">
<gisview></gisview>
</div>
</div>
</div>
</div>
</div>
</div>
I see 1-2 problems here.
You registered GISView to App.vue locally, meaning you can only use <gisview> inside App.vue's template. You can register GISView globally, like so, but i doubt you would want that.
Vue.component(GISView)
Is your second code example supposed to be GISView.vue? If it is, you're trying to use <gisview> within itself. Recursive components are a thing, but i don't think that's what you're going for here.
Related
There is a product page where product list component and action buttons are there. This is the parent component. That product list component consists of list table and edit/add modal. Now, problem is Add action event is in parent component. But, add modal related data is available in child component.
So, how can i open that model based on click event from parent? Here i am doing like this approach.
Parent Component(Product Component snippets )
<template>
..... other code ....
<div class="action-buttons">
<vu-button class="add-action" #click="onAddAction">
<svg-icon
fill="#0071E3"
name="add"
height="20"
width="28"
/>
</vu-button>
</div>
<ChildComponent :open-add-modal="isAddModal" />
</template>
Methods in Parent component
onAddAction() {
this.editable = false;
this.isAddModal = true;
},
Now, in child component i passing boolean props openAddModal but i am checking condition into created hook to show Add modal.
Problem is in initial rendering or page load add modal is showing up not in click event. How can i solve this issue?
Child component(Created hook)
created() {
if(this.openAddModal) {
this.showModal = true;
this.formType = 'add';
this.editId = null;
}
},
I want to show add modal based on click event from parent not in initial page load.
You can try using a watcher instead of checking the value of open-add-modal in the created hook. This way, when the prop open-add-modal in the child component changes, you can check the new value there and emit the needed data to the parent to then open the modal.
Example:
Parent component code
<template>
<div>
<p>Parent component</p>
<button #click="changeOpenAddModal">Clic to get child data</button>
<button #click="resetParent">Reset data in parent</button>
<p>Data from child: {{ childData }}</p>
<br />
<br />
<Child
:openAddModal="this.openAddModal"
#child-component-data-emit="this.setChildData"
/>
</div>
</template>
<script>
import Child from "./Child";
export default {
name: "Parent",
components: { Child },
data() {
return {
childData: null,
openAddModal: false,
};
},
methods: {
changeOpenAddModal() {
this.openAddModal = !this.openAddModal;
console.log(
"changing openAddModal data. New value is ",
this.openAddModal
);
},
setChildData(data) {
console.log("setting child data", data);
this.childData = data;
},
resetParent() {
this.childData = null;
this.changeOpenAddModal();
},
},
};
</script>
Child component code
<template>
<div>
<p>Child component</p>
</div>
</template>
<script>
export default {
name: "Child",
props: {
openAddModal: {
type: Boolean,
default: false,
},
},
data() {
return {
childData: {
prop1: "lorem",
prop2: "ipsum",
prop3: "dolor",
},
};
},
watch: {
openAddModal: function (newValue, oldValue) {
console.log("child watcher with newValue", newValue);
if (newValue) {
this.$emit("child-component-data-emit", this.childData);
}
},
},
mounted: function () {
console.log("prop openAddModal value on mounted:", this.openAddModal);
},
};
</script>
I have built a few modals with Vue 2 and Vue CLI, and use an alternate approach for showing, hiding, and determined if add or edit mode. No watch or separate add/edit mode boolean is necessary.
The 'product' processing is somewhat contrived since no database or AJAX are used in this example, but you should get be able to evaluate the functionality.
Parent.vue
<template>
<div class="parent">
<h4>Parent of Form Modal</h4>
<div class="row">
<div class="col-md-6">
<button class="btn btn-secondary" #click="showAddModal">Show Add Modal</button>
<button class="btn btn-secondary btn-edit" #click="showEditModal">Show Edit Modal</button>
</div>
</div>
<form-modal v-if="displayModal"
:parentProduct="product"
#save-product-event="saveProduct"
#close-modal-event="hideModal"
/>
</div>
</template>
<script>
import FormModal from './FormModal.vue'
export default {
components: {
FormModal
},
data() {
return {
product: {
id: 0,
name: '',
description: ''
},
displayModal: false
}
},
methods: {
showAddModal() {
this.resetProduct();
this.displayModal = true;
},
showEditModal() {
this.product.id = 1;
this.product.name = 'productEdit';
this.product.description = 'productEditDescription';
this.displayModal = true;
},
hideModal() {
this.displayModal = false;
},
saveProduct(modalProduct) {
this.product = modalProduct;
this.hideModal();
console.log(this.product);
},
resetProduct() {
this.product.id = 0;
this.product.name = '';
this.product.description = '';
}
}
}
</script>
<style scoped>
.btn-edit {
margin-left: 0.5rem;
}
</style>
FormModal.vue
<template>
<!-- The Modal -->
<div id="form-modal" class="modal-dialog-container">
<div class="modal-dialog-content">
<div class="modal-dialog-header">
<h4>{{ modalTitle }}</h4>
</div>
<div class="modal-dialog-body">
<form #submit.prevent="saveProduct">
<div class="form-group">
<label for="product-name">Name</label>
<input type="text" class="form-control" id="product-name" v-model="product.name">
</div>
<div class="form-group">
<label for="product-description">Description</label>
<input type="text" class="form-control" id="product-description" v-model="product.description">
</div>
<button type="submit" class="btn btn-primary">Submit</button>
<button type="button" class="btn btn-secondary btn-close" #click="closeModal">Cancel</button>
</form>
</div>
</div>
</div>
</template>
<script>
export default {
props: {
parentProduct: {
type: Object,
required: true
}
},
data() {
return {
product: this.parentProduct
}
},
computed: {
modalTitle() {
return this.product.id === 0 ? 'Add Product' : 'Edit Product';
}
},
methods: {
closeModal() {
this.$emit('close-modal-event');
},
saveProduct() {
// Add product
if (this.product.id === 0) {
this.product.id = 2;
}
this.$emit('save-product-event', this.product);
}
}
}
</script>
<style scoped>
.modal-dialog-container {
/* display: none; Hidden by default */
position: fixed;
/* Stay in place */
z-index: 1;
/* Sit on top */
left: 0;
top: 0;
width: 100%;
/* Full width */
height: 100%;
/* Full height */
overflow: auto;
/* Enable scroll if needed */
background-color: rgb(0, 0, 0);
/* Fallback color */
background-color: rgba(0, 0, 0, 0.4);
/* Black w/ opacity */
}
.modal-dialog-content {
background-color: #fefefe;
margin: 10% auto;
padding: 20px;
border: 1px solid #888;
border-radius: 0.3rem;
width: 30%;
}
.btn-close {
margin-left: 0.5rem;
}
</style>
I am trying to create a Component for titles that can be edited when they get double clicked.
The Component takes the h-tag that should be used and the title as props and should produce a normal h-tag, that turns into an input field once double clicked.
This already works if there is only one title on the page, however once there are multiple Components used on one page, it breaks as the Component is not scoped properly. But I can't figure out how.
Here is the code:
<template>
<div class="edit-on-click">
<input
:class="sizeClass"
type="text"
v-if="edit"
v-model="editedTitle"
#blur="finishEdit"
#keyup.enter="finishEdit"
v-focus="true"
/>
<span v-show="!edit" #dblclick.prevent="edit = true"></span>
</div>
</template>
The mounted hook I can't figure out how to scope:
mounted() {
let node = document.createElement(this.size); // Takes h-tag (h1, h2 etc.)
let titleText = document.createTextNode(this.finalTitle); // Takes title
node.appendChild(titleText);
node.classList.add("editable-title");
// This breaks the code once there are multiple components in the document
document.getElementsByTagName("span")[0].appendChild(node);
},
How can I scope this in an efficient way? Thank you very much in advance!
Well, with Vue, you'll probably want to avoid creating DOM elements the "native" way whenever possible, as you might run into race condition where Vue is unaware of the existence of these elements which you probably want be reactive at some point in time (in your case, the <span> double-clicking).
What you could do instead, is perhaps to dynamically "switch between" these different headings with this <component> and the v-bind:is prop. Consider the following example:
Vue.component('EditableHeading', {
template: '#editable-heading',
props: {
size: {
type: String,
default: 'h1'
},
value: {
type: String,
required: true
}
},
data() {
return {
editing: false
}
},
methods: {
confirm(e) {
this.$emit('input', e.target.value);
this.close();
},
start() {
this.editing = true;
this.$nextTick(() => {
this.$el.querySelector('input[type="text"]').select();
});
},
close() {
this.editing = false;
}
}
})
new Vue({
el: '#app',
data: () => ({
titleList: [],
text: 'New Title',
size: 'h3'
}),
methods: {
addNewTitle() {
this.titleList.push({
text: this.text,
size: this.size
});
}
}
})
.edit-on-click {
user-select: none;
}
.heading-size {
margin-top: 1rem;
width: 24px;
}
p.info {
background-color: beige;
border: 1px solid orange;
color: brown;
padding: 4px 5px;
margin-top: 2rem;
}
<script src="https://vuejs.org/js/vue.min.js"></script>
<div id="app">
<editable-heading
v-for="(title, index) of titleList" :key="index"
v-model="title.text"
:size="title.size">
</editable-heading>
<div>
<label>
Heading size:
<input v-model="size" class="heading-size" />
</label>
</div>
<div>
<label>
Title:
<input v-model="text" />
</label>
</div>
<div>
<button #click="addNewTitle()">Add new title</button>
</div>
<p class="info">
[double-click]: Edit <br />
[enter]: Confirm <br />
[esc/mouseleave]: Cancel
</p>
</div>
<script id="editable-heading" type="text/x-template">
<div class="edit-on-click">
<input
type="text"
v-if="editing"
:value="value"
#blur="close"
#keydown.enter="confirm"
#keydown.esc="close" />
<component :is="size" v-else #dblclick="start">{{value}}</component>
</div>
</script>
I am new to Vue.js so I am not sure of the proper way to implement this task correctly. I am looking to build a slider that replaces an image every 4 seconds with a set Interval. Right now it works fine, but I want to use the full power of Vue.js for achieving this goal. I would also like to know how I should terminate the interval when it is unmounted, in order to avoid memory leaks.
<template>
<div class="trending col-4">
<div class="trending-div">
<h1 class="headline">Trending</h1>
<div class="trending-articles">
<div class="trending-articles-names" #click="changeIamge">
<p class="trending-articles-names-number activeButton">1</p>
<p class="trending-articles-names-articleTitle activeBold">Lorem ipsum </p>
</div>
<div class="trending-articles-names" #click="changeIamge">
<p class="trending-articles-names-number">2</p>
<p class="trending-articles-names-articleTitle">Lorem, ipsum </p>
</div>
<div class="trending-articles-names" #click="changeIamge">
<p class="trending-articles-names-number">3</p>
<p class="trending-articles-names-articleTitle">Lorem ipsum </p>
</div>
</div>
<div class="trending-carousel">
<div #click="pic" :style="{ backgroundImage: `url(path/to/image)`}" class="trending-carousel-image active"></div>
<div #click="pic" :style="{ backgroundImage: `url(path/to/image)`}" class="trending-carousel-image"></div>
<div #click="pic" :style="{ backgroundImage: `url(path/to/image)`}" class="trending-carousel-image"></div>
</div>
</div>
</div>
</template>
<script>
export default{
data: function() {
return {
counter: 0,
}
},
mounted: function() {
let carouselImages = document.querySelectorAll('.trending-carousel-image');
let buttons = document.querySelectorAll('.trending-articles-names-number');
let title = document.querySelectorAll('.trending-articles-names-articleTitle');
setInterval(() => {
carouselImages[this.counter].classList.remove("active")
buttons[this.counter].classList.remove("activeButton")
title[this.counter].classList.remove("activeBold")
if(this.counter === 3) {
carouselImages[0].classList.add("active");
buttons[0].classList.add("activeButton");
title[0].classList.add("activeBold");
this.counter = 0;
}else {
carouselImages[this.counter+1].classList.add("active");
buttons[this.counter+1].classList.add("activeButton");
title[this.counter+1].classList.add("activeBold");
this.counter++;
}
},4000);
}
}
</script>
When working with vue you should avoid directly manipulating the dom.
If you want to dynamically add / remove classes to an element you can use the object syntax for v-bind:class
If you need animations / transitions, you can use Vue transitions (transition / transition-group)
If you have many similar elements (e.g. .trending-articles-names in your example code), you can use v-for to create them for you
A very simple carousel thats purely implemented in vue might look like this:
(codepen is available here)
new Vue({
el: '#root',
data: function() {
return {
articles: [{
name: "Lorem Ipsum",
image: "https://via.placeholder.com/300x50.png/FF0000/FFFFFF?text=First"
}, {
name: "Lorem Ipsum 2",
image: "https://via.placeholder.com/300x50.png/00FF00/FFFFFF?text=Second"
}, {
name: "Lorem Ipsum 3",
image: "https://via.placeholder.com/300x50.png/0000FF/FFFFFF?text=Third"
}],
activeImage: 0,
interval: null
}
},
mounted() {
this.interval = setInterval(this.next, 5000);
},
destroyed() {
// remember to clear the interval once the component is no longer used
clearInterval(this.interval);
},
methods: {
prev() {
this.activeImage--;
if (this.activeImage < 0)
this.activeImage = this.articles.length - 1;
},
next() {
this.activeImage++;
if (this.activeImage >= this.articles.length)
this.activeImage = 0;
},
pic(article) {
console.log("CLICKED ON", article);
}
}
});
.carousel {
overflow: hidden;
width: 300px;
display: flex;
}
.carousel img {
transition: transform 0.5s ease;
}
button {
margin: 6px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="root">
<div class="trending col-4">
<div class="trending-div">
<div class="trending-articles">
<div v-for="(article, idx) in articles" :key="idx" class="trending-articles-names" #click="activeImage = idx">{{article.name}}</div>
</div>
<div class="carousel">
<img v-for="(article, idx) in articles" :key="idx" #click="pic(article)" :src="article.image" :style="{transform: `translateX(-${activeImage * 100}%)`}" />
</div>
<button type="button" #click="prev">PREV</button>
<button type="button" #click="next">NEXT</button>
</div>
</div>
</div>
I would suggest using a pre-made carousel component for production projects though.
There are several good libaries available for carousels in vue, to name a few:
Vuetify Carousels (Vuetify is a material design based vue framework)
vue-carousel (a lightwight carousel component)
bootstrap-vue carousel (based on boostrap)
I used vue cli create to setup a basic boilerplate project. I did some small modifications that initially worked. Then at some point both of my components stopped working in the browser. With no warnings from vue-cli-service serve.
In the browser console I get the error Unknown custom element for both of my elements.
Here is my main.js;
import './sass/style.scss'
import Vue from 'vue'
import App from './App.vue'
Vue.config.productionTip = false
/*
new Vue({
render: h => h(App)
}).$mount('#app')
*/
new Vue({
el: '#app',
template: '<App/>',
render: h => h(App),
components: { App }
}).$mount('#app');
Here is my App.vue;
<template>
<div id="app">
<ShowList list_id="default"/>
</div>
</template>
<script>
import ShowList from './components/ShowList.vue'
export default {
name: 'app',
components: {
ShowList
}
}
</script>
<script lang="scss">
#import "sass/common.scss";
// Static footer
.footer {
position: absolute;
bottom: 0;
width: 100%;
height: $footer_height; /* Set the fixed height of the footer here */
margin-bottom:0;
}
.navbar {
margin-bottom:0;
}
</script>
And here is one of the components;
<template>
<div class="row">
<div class="col-md-4 order-md-2 mb-4">
<h4 class="d-flex justify-content-between align-items-center mb-3">
<span class="text-muted">Din lista</span>
</h4>
<ul class="list-group mb-3">
<li v-for="beer in beers" v-bind:key="beer.name" class="list-group-item d-flex justify-content-between lh-condensed">
<div>
<h6 class="my-0">{{ beer.name }}</h6>
<small class="text-muted">{{ beer.description }}</small>
</div>
<span class="text-muted">{{ beer.price }}</span>
</li>
</ul>
</div>
</div>
</template>
<script>
var beer_items = [
{
name: 'Hoegarden',
price: '19:90 kr',
description: 'Tyskt öl'
},
{
name: 'Leffe',
price: '16:90 kr',
description: 'Belgiskt öl'
},
{
name: 'Fat Tire',
price: '17:50 kr',
description: 'Amerikanskt öl'
}
];
export default {
name: 'ShowList',
props: {
list_id: String
},
data () {
return {
beers: beer_items
};
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style lang="scss" scoped>
.flip-list-move {
transition: transform 0.5s;
}
.no-move {
transition: transform 0s;
}
.ghost {
opacity: .5;
background: #C8EBFB;
}
.list-group {
min-height: 20px;
}
.list-group-item {
cursor: move;
}
.list-group-item i{
cursor: pointer;
}
</style>
I tried using hyphenated component names like show-list too but it did not help.
I feel like I've missed something simple and essential but so far nobody on Vue Gitter has been able to figure out what.
could it be because you've got <script lang="scss"> instead of <style lang="scss"> tags in your App.vue?
I have a simple project where i am trying to learn the concepts of vue.js using componenetes, comunication between components(i use eventBus) i am using the webkit-simple template to approach this, basicly what happens, is that i have 1 component that consists in a simple textarea where i add some text, that text should be displayed in my second component, that is a template where i render a array with all my texts that i inserted, like a list of quotes.
component addQuote
<template>
<div class="row">
<div class="col-md-12">
<div class="form-group">
<div class="col-md-offset-3 col-md-6">
<label>Quote:</label>
<textarea v-model="quote.text" class="form-control" rows="5"></textarea>
<div class="text-center">
<button #click="addQuote" class="btn btn-primary center">Add Quote</button>
</div>
</div>
</div>
</div>
</div>
</template>
<script>
import { quoteBus } from '../main.js';
export default {
methods: {
addQuote() {
if (this.counter < 10) {
this.counter++;
this.quote.key =+ new Date();
quoteBus.$emit('saveQuote', this.quote);
}
}
},
data: function () {
return {
quote: {},
counter: 0
}
},
created(){
quoteBus.$on('decreaseCounter', () => {
this.counter--
});
}
}
</script>
<style scoped>
.row {
margin-top: 40px;
}
.center {
margin: 0 auto;
}
div .text-center {
margin-top: 20px;
}
</style>
component quotes
<template>
<div class="row">
<div class="col-md-3" v-for="(quote,$index) in quotes" #click="deleteQuote($index)" :key="quote.key">
<div class="spacing">
<h2>{{quote.text}}</h2>
</div>
</div>
</div>
</template>
<script>
import { quoteBus } from '../main.js';
export default {
data: function () {
return {
quotes: []
}
},
methods: {
deleteQuote(i){
this.quotes.splice(i,1);
quoteBus.$emit('decreaseCounter');
}
},
created() {
quoteBus.$on('saveQuote', quote => {
this.quotes.unshift(quote);
console.log(JSON.stringify(this.quotes));
});
}
}
</script>
<style scoped>
h2 {
font-family: 'Niconne', cursive;
}
div .col-md-3 {
border: 1px solid darkgray;
padding: 10px;
}
div .row {
margin-top: 40px;
}
.spacing {
margin: 10px;
padding: 10px;
}
</style>
the problem is, everytime i add a quote the text replace all the elements before.
Example:
9th entry: text: "abcdef", all the entries in the array has this value in text, all my divs has the value of abcdef, what is happening :S
const quoteBus = new Vue();
Vue.component('addQuote', {
template: '#addQuote-template',
methods: {
addQuote() {
if (this.counter < 10) {
this.counter++;
this.quote.key = +new Date();
quoteBus.$emit('saveQuote', Object.assign({}, this.quote));
}
}
},
data: function() {
return {
quote: {},
counter: 0
}
},
created() {
quoteBus.$on('decreaseCounter', () => {
this.counter--
});
}
});
Vue.component('quotes', {
template: '#quotes-template',
data: function() {
return {
quotes: []
}
},
methods: {
deleteQuote(i) {
this.quotes.splice(i, 1);
quoteBus.$emit('decreaseCounter');
}
},
created() {
quoteBus.$on('saveQuote', quote => {
this.quotes.unshift(quote);
console.log(JSON.stringify(this.quotes));
});
}
});
new Vue({
el: '#app'
});
<script src="//cdnjs.cloudflare.com/ajax/libs/vue/2.2.4/vue.min.js"></script>
<template id="addQuote-template">
<div class="row">
<div class="col-md-12">
<div class="form-group">
<div class="col-md-offset-3 col-md-6">
<label>Quote:</label>
<textarea v-model="quote.text" class="form-control" rows="5"></textarea>
<div class="text-center">
<button #click="addQuote" class="btn btn-primary center">Add Quote</button>
</div>
</div>
</div>
</div>
</div>
</template>
<template id="quotes-template">
<div class="row">
<div class="col-md-3" v-for="(quote,$index) in quotes" #click="deleteQuote($index)" :key="quote.key">
<div class="spacing">
<h2>{{quote.text}}</h2>
</div>
</div>
</div>
</template>
<div id="app">
<add-quote></add-quote>
<quotes></quotes>
</div>
The problem is that there is only one instance of this.quote in your addQuote component. You pass that particular object to quotes to be put into the array every time. When an object is put into an array, it is by-reference. If you put the same object into an array multiple times, you just have multiple references to the object's contents. Every element of your array is a reference to the same set of contents.
You need to send a copy of the object instead:
quoteBus.$emit('saveQuote', Object.assign({}, this.quote));