why doesn't my interpolated html display properly in vue.js? - vue.js

The data in my app.js file is not being interpolated and displayed on the screen. I tried the older v-repeat. Could it be some missing items in the installation? Any help would be appreciated.
Here is my html
<!-- show the events -->
<div class="col-sm-6">
<div class="list-group">
<a href="#" class="list-group-item" v-for="event in events">
<!-- <h1>{{text}}</h1> -->
<h4 class="list-group-item-heading">
<i class="glyphicon glyphicon-bullhorn"></i>
{{ event.name }}
</h4>
<h5>
<i class="glyphicon glyphicon-calendar" v-if="event.date"></i>
{{ event.date }}
</h5>
<p class="list-group-item-text" v-if="event.description">{{ event.description }}</p>
<button class="btn btn-xs btn-danger" v-on="click: deleteEvent($index)">Delete</button>
</a>
</div>
</div>
And here is my js file
new Vue({
data: {
text: 'hello world',
event: { name: '', description: '', date: '' },
events: []
},
// Anything within the ready function will run when the application loads
ready: function() {
// When the application loads, we want to call the method that initializes
// some data
this.fetchEvents();
},
// Methods we want to use in our application are registered here
methods: {
// We dedicate a method to retrieving and setting some data
fetchEvents: function() {
var events = [
{
id: 1,
name: 'TIFF',
description: 'Toronto International Film Festival',
date: '2015-09-10'
},
{
id: 2,
name: 'The Martian Premiere',
description: 'The Martian comes to theatres.',
date: '2015-10-02'
},
{
id: 3,
name: 'SXSW',
description: 'Music, film and interactive festival in Austin, TX.',
date: '2016-03-11'
}
];
// $set is a convenience method provided by Vue that is similar to pushing
// data onto an array
this.$set('events', events);
},
// Adds an event to the existing events array
addEvent: function() {
if(this.event.name) {
this.events.push(this.event);
this.event = { name: '', description: '', date: '' };
}
}
}
});
Thanks for any help.

So, there are a few issues here. I've cleaned them up for you to look over.
Added the el: "#app" property to tell Vue where to mount your Vue.
Changed your ready to mounted (you could also use created).
Changed this.$set('events',events) to this.events = events.
Added the unreferenced deleteEvent method.
Fixed the click handler syntax for v-on:click.
So the code ends up looking like this.
new Vue({
el: "#app",
data: {
text: 'hello world',
event: { name: '', description: '', date: '' },
events: []
},
mounted: function() {
this.fetchEvents();
},
// Methods we want to use in our application are registered here
methods: {
// We dedicate a method to retrieving and setting some data
fetchEvents: function() {
var events = [...];
this.events = events;
},
// Adds an event to the existing events array
addEvent: function() {
if(this.event.name) {
this.events.push(this.event);
this.event = { name: '', description: '', date: '' };
}
},
deleteEvent(){
alert('delete this one')
}
}
});
Template
<div id="app">
<!-- show the events -->
<div class="col-sm-6">
<div class="list-group">
<a href="#" class="list-group-item" v-for="event in events">
<!-- <h1>{{text}}</h1> -->
<h4 class="list-group-item-heading">
<i class="glyphicon glyphicon-bullhorn"></i>
{{ event.name }}
</h4>
<h5>
<i class="glyphicon glyphicon-calendar" v-if="event.date"></i>
{{ event.date }}
</h5>
<p class="list-group-item-text" v-if="event.description">{{ event.description }}</p>
<button class="btn btn-xs btn-danger" v-on:click=" deleteEvent(event)">Delete</button>
</a>
</div>
</div>
</div>
Working example.

Related

Vue is not update DOM when object property changes in array of objects

I have a const array of objects which set to the data property on created(), I am trying to update the object properties as the user entered the form, the Console print shows the value updated, but the DOM is changing. DOM is updated when the key value is changed too but I do not want to change the key value
Data Array:
const invoices = [
{
number: "BBRFL",
client: "Ellison Daugherty",
amount: 8800,
status: "Paid",
},
{
number: "TYUBK",
client: "Myrna Vinson",
amount: 4097,
status: "Paid",
},
{
number: "IRUBR",
client: "Mcmillan Warner",
amount: 6466,
status: "Draft",
},
];
Here is the app.
const app = new Vue({
el: "#app",
components: {
"create-invoice": CreateInvoice,
"invoice-item": InvoiceItem,
},
data() {
return {
invoices: invoices,
status: null,
};
},
created: function () {
const invoices = localStorage.getItem("invoices");
if (invoices) {
this.invoices = JSON.parse(invoices);
}
},
computed: {
count: function () {
return this.filteredInvoices.length;
},
filteredInvoices: function () {
if (this.status) {
return this.invoices.filter((invoice) => invoice.status == this.status);
}
return this.invoices;
},
},
methods: {
saveInvoice(invoice) {
this.invoices.push(invoice);
},
invoiceUpdate(invoice) {
const index = this.invoices.findIndex((i) => i.number === invoice.number);
// this.invoices.splice(index, 1, invoice);
Vue.set(this.invoices[index], "client", invoice.client);
Vue.set(this.invoices[index], "amount", invoice.amount);
Vue.set(this.invoices[index], "status", invoice.status);
},
invoiceDelete(number) {
const index = this.invoices.findIndex((i) => i.number === number);
this.invoices.splice(index, 1);
},
},
watch: {
invoices: {
deep: true,
handler: function (invoices) {
localStorage.setItem("invoices", JSON.stringify(invoices));
},
},
},
template: `
<div>
<div class="row">
<div class="col-md-4 text-left">
<h1>Invoices</h1>
<p class="text-dark">There are {{count}} Total Invoices</p>
</div>
<div class="col-md-4 text-start" style="margin-top: 10px">
<label for="status">Filter</label>
<select name="filter" id="status" class="form-control" v-model="status">
<option value="Draft">Draft</option>
<option value="Paid">Paid</option>
<option value="Pending">Pending</option>
</select>
</div>
<div class="col-md-4 text-right" style="margin-top: 10px">
<button class="btn btn-primary mt-4" id="createInvoice">
New Invoice
</button>
</div>
</div>
<div class="col-md-12">
<div class="row mt-2 mb-2">
<div
class="invoice col-md-12"
>
<invoice-item
v-for="(n, index) in filteredInvoices"
:key="n.number"
:initial-client="n.client"
:initial-number="n.number"
:initial-amount="n.amount"
:initial-status="n.status"
#update-invoice="invoiceUpdate"
#delete-invoice="invoiceDelete"
></invoice-item>
</div>
<div class="text-center" v-if="filteredInvoices.length === 0"><p>No invoice found</p></div>
</div>
</div>
<create-invoice #saveInvoice="saveInvoice" ></create-invoice>
</div>
</div>
`,
});
I had tried, this.$set, Vue.set, Direct assigning to property, assingment using splice function, but none of working. It only works with the change of value of key in for loop. Which I do not want to update.
Jsfiddle
Any Help? Thanks in advance.

Removing specific object from array keeps removing last item

Here is what I have and I will explain it as much as I can:
I have a modal inside my HTML code as shown below:
<div id="favorites-modal-edit" class="modal">
<div class="modal-background"></div>
<div class="modal-card px-4">
<header class="modal-card-head">
<p class="modal-card-title">Favorites</p>
<button class="delete" aria-label="close"></button>
</header>
<section class="modal-card-body">
<div class="container">
<div id="favorites-modal-edit-wrapper" class="columns is-multiline buttons">
<favorites-edit-component v-for="(favorite, index) in favorites_list" :key="favorite.id" :favorite="favorite" />
</div>
</div>
</section>
<footer class="modal-card-foot">
<button class="button" #click="addItem">
Add Item
</button>
</footer>
</div>
</div>
The id="favorites-modal-edit" is the Vue.js app, then I have the <favorites-edit-component /> vue.js component.
Here is the JS code that I have:
I have my favorites_list generated which is an array of objects as shown below:
const favorites_list = [
{
id: 1,
name: 'Horse',
url: 'www.example.com',
},
{
id: 2,
name: 'Sheep',
url: 'www.example2.com',
},
{
id: 3,
name: 'Octopus',
url: 'www.example2.com',
},
{
id: 4,
name: 'Deer',
url: 'www.example2.com',
},
{
id: 5,
name: 'Hamster',
url: 'www.example2.com',
},
];
Then, I have my vue.js component, which is the favorites-edit-component that takes in the #click="removeItem(this.index) which is coming back as undefined on the index.
Vue.component('favorites-edit-component', {
template: `
<div class="column is-half">
<button class="button is-fullwidth is-danger is-outlined mb-0">
<span>{{ favorite.name }}</span>
<span class="icon is-small favorite-delete" #click="removeItem(this.index)">
<i class="fas fa-times"></i>
</span>
</button>
</div>
`,
props: {
favorite: Object
},
methods: {
removeItem: function(index) {
this.$parent.removeItem(index);
},
}
});
Then I have the vue.js app that is the parent as shown below:
new Vue({
el: '#favorites-modal-edit',
// Return the data in a function instead of a single object
data: function() {
return {
favorites_list
};
},
methods: {
addItem: function() {
console.log('Added item');
},
removeItem: function(index) {
console.log(index);
console.log(this.favorites_list);
this.favorites_list.splice(this.favorites_list.indexOf(index), 1);
},
},
});
The problem:
For some reason, each time I go to delete a item from the list, it's deleting the last item in the list and I don't know why it's doing it, check out what is happening:
This is the guide that I am following:
How to remove an item from an array in Vue.js
The item keeps coming back as undefined each time the remoteItem() function is triggered as shown below:
All help is appreciated!
There is an error in your favorites-edit-component template, actually in vue template, when you want to use prop, data, computed, mehods,..., dont't use this
=> there is an error here: #click="removeItem(this.index)"
=> in addition, where is index declared ? data ? prop ?
you're calling this.$parent.removeItem(index); then in removeItem you're doing this.favorites_list.splice(this.favorites_list.indexOf(index), 1); this means that you want to remove the value equal to index in you array no the value positioned at the index
=> this.favorites_list[index] != this.favorites_list[this.favorites_list.indexOf(index)]
In addition, I would suggest you to modify the favorites-edit-component component to use event so it can be more reusable:
favorites-edit-component:
<template>
<div class="column is-half">
<button class="button is-fullwidth is-danger is-outlined mb-0">
<span>{{ favorite.name }}</span>
<span class="icon is-small favorite-delete" #click="$emit('removeItem', favorite.id)">
<i class="fas fa-times"></i>
</span>
</button>
</div>
</template>
and in the parent component:
<template>
...
<div id="favorites-modal-edit-wrapper" class="columns is-multiline buttons">
<favorites-edit-component
v-for="favorite in favorites_list"
:key="favorite.id"
:favorite="favorite"
#removeItem="removeItem($event)"
/>
</div>
...
</template>
<script>
export default {
data: function () {
return {
favorites_list: [],
};
},
methods: {
...
removeItem(id) {
this.favorites_list = this.favorites_list.filter((favorite) => favorite.id !== id);
}
...
},
};
I would restructure your code a bit.
In your favorites-edit-component
change your removeItem method to be
removeItem() {
this.$emit('delete');
},
Then, where you are using your component (in the template of the parent)
Add an event catcher to catch the emitted "delete" event from the child.
<favorites-edit-component v-for="(favorite, index) in favorites_list" :key="favorite.id" :favorite="favorite" #delete="removeItem(index)"/>
The problem you have right now, is that you are trying to refer to "this.index" inside your child component, but the child component does not know what index it is being rendered as, unless you specifically pass it down to the child as a prop.
Also, if you pass the index down as a prop, you must refer to it as "index" and not "this.index" while in the template.

Button component does not receive DataTable props

I am trying to add a button to my vuejs DataTable. I created a Button component and I can add it as a column in my DataTable, but I can't send it through props. I do not have full knowledge of vue, for sure I am doing something wrong.
Vue.component('edit-button', {
template: `
<button class="btn btn-xs btn-primary" #click="goToUpdatePage">Edit</button>
`,
props: ['data'],
methods: {
goToUpdatePage: function(){
alert(data)
}
}
});
export default {
data() {
return {
numeroPagina: 1,
tiposNatureza: [],
utisMoveis: [],
list: [],
filtros: {
dataInicial: new Date().toISOString().split('T')[0],
dataFinal: new Date().toISOString().split('T')[0],
selectedUtisMoveis: [],
selectedStatus: [],
selectedTipoNatureza: [],
selectedTipoPesquisa: ''
},
tabela: {
columns: [
{
// <a data-toggle="modal" data-target="#ExemploModalCentralizado">${row.DESCRICAO}</a>
label: 'Descrição', representedAs: function (row) {
if (row.DESCRICAO) return `<a data-toggle="modal" data-target="#ExemploModalCentralizado">${row.DESCRICAO}</a> <button onclick="alertMe('TESTE')">TESTE</button>`
else return '<b>Sem informação</b>'
}, interpolate: true
},
{
label: 'Quantidade', representedAs: function (row) {
return `<p><span class="label label-primary" style="font-size: 17px">${row.QTD}</span></p>`
}, interpolate: true
},
{
label: 'Action',
component: 'edit-button',
data: 'row',
component_data: {
path: 'contact',
action: 'update'
}
}
],
rows: []
}
}
}
<div class="row">
<div class="col-lg-12">
<div class="ibox float-e-margins">
<div class="ibox-title">
<h2 v-if="quantidadeDeRegistros > 0">Foram encontrado(s) {{ quantidadeDeRegistros }}
resultado(s)</h2>
</div>
<div class="ibox-content no-padding" style="font-size: 15px">
<datatable :columns="tabela.columns" :data="tabela.rows"></datatable>
<datatable-pager v-model="numeroPagina" type="abbreviated" :per-page="8"></datatable-pager>
</div>
</div>
</div>
</div>
I need to create a button that takes the information from the selected row (row.DESCRIPTION) and sends it to a method, where I will do some dealing in a modal. Thank you very much in advance.
Try using this to reference the component scope.
alert(this.data)
And remove:
props: ['data'],
You do not want a passed in prop called data. You want the component's defined data property

How to use query parameter in Vue search box?

I have a page with a search box on it using Vue. What I want to do is this: when a user comes from another page with a parameter in the URL (e.g., myurl.com/?windows), I capture the parameter and populate the search field to run the search on that string when the page loads. If there's no parameter, nothing happens.
I'm capturing the string from the URL with JavaScript, but don't see how to get it in the input to run the search.... I created a method but don't see how to apply it.
<div id="app">
<input type="text" v-model="search" placeholder="Search Articles" />
<div v-for="article in filteredArticles" v-bind:key="article.id" class="container-fluid to-edges section1">
<div class="row">
<div class="col-md-4 col-sm-12 section0">
<div class="section0">
<a v-bind:href="article.url" v-bind:title="toUppercase(article.title)">
<img class="resp-img expand section0"
v-bind:src="article.src"
v-bind:alt="article.alt"/>
</a>
</div>
<div>
<h3 class="title-sec">{{ article.title }}</h3>
<p>{{ article.description }}</p>
</div>
</div>
</div>
</div>
</div>
<script type="text/javascript">
var pgURL = window.location.href;
var newURL = pgURL.split("?")[1];
console.log(newURL);
</script>
// Filters
Vue.filter('to-uppercase', function(value){
return value.toUpperCase();
});
new Vue({
el: "#app",
data: {
articles: [
{ id: 1, title: 'Trend Alert: Black Windows', category: 'Windows', description: 'Timeless, elegant, and universally flattering, black is an excellent color to add to any wardrobe – or any window. Get in the black with this chic design trend.', src: 'http://i1.adis.ws/i/stock/Trending_Polaroid_Black_Windows_2018_1?$trending-mobile$', url: '/{StorefrontContextRoot}/s/trending/trend-alert-black-windows', alt: 'Pantone Colors image' },
{ id: 2, title: 'Benefits of a Pass-Through Window', category: 'Windows', description: 'Whether you’re adding a pass-through window in order to enjoy an al fresco aperitif or for easier access to appetizers in the kitchen, we’re big fans of bringing the outdoors in.', src: 'http://i1.adis.ws/i/stock/polaroid_benefitsofapassthroughwindow655x536?$trending-mobile$', url: '/{StorefrontContextRoot}/s/trending/kitchen-pass-through-bar-window', alt: 'Benefits of a Pass-Through Window image' }, etc....
],
search: ''
},
methods: {
toUppercase: function(title){
return title.toUpperCase();
},
urlSearch: function(newURL) {
if (newURL) {
return this.search = newURL;
}
}
},
computed: {
filteredArticles: function() {
// returning updated array based on search term
return this.articles.filter((article) => {
return article.category.match(new RegExp(this.search, "i"));
});
}
}
})
You can call the urlSearch method during the mounted hook:
mounted() {
this.urlSearch(newURL)
},
methods: {
urlSearch(url) {
return this.search = url
}
},

Bootstrap-vue: how to pass data to modal?

I'm trying to use bootstrap-vue modal to show details from a collection of items.
What I want is to pass data to modal to show a simple message.
I first loop over recordset to show button.
<ul>
<li v-for="item in items">{{ item.first_name }}
<b-button size="sm" v-b-modal="'myModal'" user="'item'">
Saluta {{item.first_name}}
</b-button>
</li>
</ul>
And then display name in modal:
<b-modal id="myModal" :user="'user'">
Hello {{user}}!
</b-modal>
Here's my fiddle https://jsfiddle.net/bptLavov/259/
This works just fine:
HTML:
<div id="app">
<ul>
<li v-for="item in items">
{{ item.first_name }}
<b-button size="sm" v-b-modal="'myModal'" user="'item'" click="sendInfo(item)">
Saluta {{item.first_name}}
</b-button>
</li>
</ul>
<b-modal id="myModal">
Hello {{selectedUser.first_name}} {{selectedUser.last_name}} !
</b-modal>
</div>
JAVASCRIPT:
new Vue({
el: '#app',
data: {
items :
[
{ first_name: 'Dickerson', last_name: 'Macdonald' },
{ first_name: 'Larsen', last_name: 'Shaw' },
{ first_name: 'Geneva', last_name: 'Wilson' },
{ first_name: 'Jami', last_name: 'Carney' }
],
selectedUser: '',
},
methods: {
sendInfo(item) {
this.selectedUser = item;
}
}
})
What it does is:
1) Execute a method named sendInfo
2) That methods will set the selectedUser variable inside data with the selected user which information is sent thanks to the v-on:click (#click) directive depending on the v-for iteration. Because of that, each button will send the right information.
3) Display the information inside the modal
You can use vuex and your components won't have to be in the same file or related.
Component which will open the modal:
<ul>
<li v-for="item in items">{{ item.first_name }}
<b-button #click="$store.dispatch('modals/openModal', { data: item, modalId: 'myModal' })">
Saluta {{item.first_name}}
</b-button>
</li>
</ul>
Modal's template:
<b-modal id="myModal">
Hello {{selectedUser.first_name}} {{selectedUser.last_name}} !
</b-modal>
Modal's computed property:
selectedUser() { return this.$store.state.modals.modalData },
Vuex module (modals.js):
const state = {
modalData: {},
}
const mutations = {
setModalData(state, data) { state.modalData = data },
}
const actions = {
openModal(context, data) {
context.commit('setModalData', data.data)
$('#' + data.modalId).modal('show')
},
}