I have the following form where the input fields are dynamically generated however when I update the fields the two way binding isn't happening - nothing is changing when i view the results in dev tools?
<template v-for="field in formFields" :key="field.name">
<div class="form-group" v-if="field.type == text'">
<label class="h4" :for="field.label" v-text="field.label"></label>
<span class="required-asterisk" v-if="field.required"> *</span>
<input :class="field.className"
:id="field.name"
:name="field.name"
type="text"
:maxlength="!!field.maxLength ? field.maxLength : false"
v-validate="{ required: field.required}"
:data-vv-as="field.label"
v-model="form[field.name]"/>
<span class="field-validation-error" v-show="errors.has(field.name)" v-text="errors.first(field.name)"></span>
</div>
</template>
And the following vue instance:
export default {
props: ['formFields'],
data: function () {
return {
form: {},
}
},
created: function() {
this.resetForm();
},
methods: {
resetForm: function() {
this.form = {
'loading': false
}
_.each(this.formFields, (field) => {
this.form[field.name] = field.value;
});
$('#editModal').modal('hide');
this.errors.clear();
}
}
}
When I hard code the values in the form it seems to work:
this.form = {
'loading': false,
'Subject': 'Test',
'Author': 'Roald Dahl'
}
So it seems like something to with the following which it doesn't like:
_.each(this.formFields, (field) => {
this.form[field.name] = field.value;
});
Could it be something to do with the arrow function. Any ideas chaps?
You're running into a limitation of Vue's reactivity, which is spelled out in the documentation
Instead of
this.form[field.name] = field.value;
use
this.$set(this.form, field.name, field.value);
Trying changing the following:
<div class="form-group" v-if="field.type 'text'"> ->
<div class="form-group" v-if="field.type == 'text'">
and the model data object like this
data: {
form: {},
},
https://jsfiddle.net/Jubels/eywraw8t/373132/ Example here. For testing purposes I removed the validation
Instead of
this.form[field.name] = field.value;
use
this.$set(this.form, field.name, field.value);
this.form.splice(field.name, 1, field.value)
or
Vue.set(this.form, field.name, field.value);
this.form.splice(field.name, 1, field.value)
More information in : https://v2.vuejs.org/v2/guide/list.html#Caveats
Related
How are you?
I'm studying Vue and I'm stuck on the current task not knowing where to go.
I have a select that when I click I need to show on screen only what corresponds to that selection. For example, when placing the "to do" option in the select, only the tasks with a concluded=false should appear on the screen. I've only gotten this far and I need help to continue. Can you help me? Thanks
This is my App.vue
<template>
<div id="app">
<h1>Lista de Tarefas</h1>
<List :data="list" #remove="handleRemove"/>
<Form #add="addNewTask" #onChange="handleN"/>
</div>
</template>
<script>
import List from "./components/List.vue";
import Form from "./components/Form.vue";
export default {
components: {
List,
Form,
},
data() {
return {
list: [],
};
},
methods: {
addNewTask(newTask) {
this.list.push(newTask);
},
handleRemove(item) {
const index = this.list.findIndex(i => i.id === item.id)
this.list[index].excluded = true
},
handleN(item) {
const index = this.list.findIndex(i => i.id === item.id)
this.list[index].concluded = true
}
},
};
</script>
This is my List.vue
<template>
<ul>
<select v-model="selected" #change="onChange($event)">
<option disabled value="">Escolha a visualização</option>
<option v-for="option in options" :key="option.text">
{{ option.text }}
</option>
</select>
<li v-for="item in itens" :key="item.id">
<input type="checkbox" id="checkbox" v-model="item.concluded" />
<label for="checkbox"> {{ item.description }} </label>
<button #click="() => $emit('remove', item)">Excluir</button>
</li>
</ul>
</template>
<script>
export default {
props: {
data: {
type: Array,
default: () => {},
},
},
data() {
return {
selected: "",
options: [
{ text: "Todos", value: "1" },
{ text: "A fazer", value: "2" },
{ text: "Concluído", value: "3" },
{ text: "Deletado", value: "4" },
],
};
},
computed: {
itens() {
return this.data.filter((item) => item.excluded === false);
},
},
methods: {
onChange(event) {
console.log(event.target.value);
return this.data.filter((item) => item.concluded === false);
},
},
};
</script>
This is my Form.vue
<template>
<form #submit.prevent="handleNewTask">
<input type="text" v-model="newTask" placeholder="Insira a tarefa"/>
<input type="submit" value="Adicionar"/>
</form>
</template>
<script>
import Task from '../types/Task.js'
export default {
data() {
return {
newTask: "",
};
},
methods: {
handleNewTask() {
this.$emit('add', new Task(this.newTask))
this.newTask = ''
}
},
};
</script>
And this is my Task.js
export default class {
constructor(description) {
this.description = description,
this.id = Math.random(),
this.concluded = false,
this.excluded = false
}
}
I watch some tutorials, read the documentation and some StackOverflow questions but I really can't get out of here
Thanks in advance for the help
Based on how you have structured your app, our only concern should be with the List.vue file.
Your goal is to filter the results based on the selection (selected property). However, your issue is that you are not even using that anywhere.
I know you are hard coding the filter on the onChange method but that is, first of all wrong because you aren't really changing anything (you are returning an array), and secondly it's inefficient.
A better way to do it is to update the computed itens function like so:
itens() {
return this.data.filter((item) => {
if (this.selected === '1'){
return item.concluded === false
} else if (this.selected === '2'){
// filter another way
} else if (... // so on and so forth
});
},
Also, I would filter out the excluded items before sending them to the component. If you aren't going to use it, don't send it.
Remove the onChange event on the <select> and the associated method since they are now unused.
I work with single file components and have a list in one of them. This list should work like a accordion, but as far as I can find in the Vuejs docs, it's not that easy to make each item open separately very easily. The data (questions and answers) is retrieved from an ajax call. I use jQuery for that, but would like to know how I can make the accordion work Vuejs-style. Any help would be appreciated!
Here's the code:
export default {
name: 'faq-component',
props: ['faqid', 'faqserviceurl', 'ctx'],
data: function () {
return {
showFaq: "",
totalFaqs: this.data,
isOpen: true
}
},
watch: {
'showFaq': function(val, faqid, faqserviceurl) {
var self = this;
$.ajax ({
url: this.faqserviceurl,
type: 'GET',
data: {id: this.faqid, q: val, scope:1},
success: function (data) {
self.totalFaqs = data;
},
error: function () {
$("#answer").html('Sorry');
}
});
}
},
methods: {
'toggle': function() {
this.isOpen = !this.isOpen
}
}
}
<template>
<div class="card faq-block">
<div class="card-block">
<form>
<div class="form-group">
<input class="form-control" type="text" placeholder="Your question" id="faq" v-model="showFaq">
</div>
</form>
<div id="answer"></div>
<ul class="faq">
<li v-for="faq in totalFaqs">
<p class="question" v-html="faq.vraag" v-bind:class={open:isOpen} #click="isOpen = !isOpen"></p>
<p class="answer" v-html="faq.antwoord"></p>
</li>
</ul>
</div>
</div>
</template>
Add an isOpen property to each object in totalFaqs and use that instead of your single isOpen property in data.
<p class="question" v-html="faq.vraag" v-bind:class={open: faq.isOpen} #click="faq.isOpen = !faq.isOpen"></p>
If you can't change the model from the server side, then add it client side.
success: function (data) {
data.forEach(d => self.$set(d, 'isOpen', false))
self.totalFaqs = data
}
My view blade laravel like this :
<form slot="search" class="navbar-search" action="{{url('search')}}">
<search-header-view></search-header-view>
</form>
The view blade laravel call vue component (search-header-view component)
My vue component(search-header-view component) like this :
<template>
<div class="form-group">
<div class="input-group">
<input type="text" class="form-control" placeholder="Search" name="q" autofocus v-model="keyword" :value="keyword">
<span class="input-group-btn">
<button class="btn btn-default" type="submit" ref="submitButton"><span class="fa fa-search"></span></button>
</span>
<ul v-if="!selected && keyword">
<li v-for="state in filteredStates" #click="select(state.name)">{{ state.name }}</li>
</ul>
</div>
</div>
</template>
<script>
export default {
name: 'SearchHeaderView',
components: { DropdownCategory },
data() {
return {
baseUrl: window.Laravel.baseUrl,
keyword: null,
selected: null,
filteredStates: []
}
},
watch: {
keyword(value) {
this.$store.dispatch('getProducts', { q: value })
.then(res => {
this.filteredStates = res.data;
})
}
},
methods: {
select: function(state) {
this.keyword = state
this.selected = state
this.$refs.submitButton.click();
},
input: function() {
this.selected = null
}
}
}
</script>
If I input keyword "product" in input text, it will show autocomplete : "product chelsea", "product liverpool", "product arsenal"
If I click "product chelsea", the url like this : http://myshop.dev/search?q=product
Should the url like this : http://myshop.dev/search?q=product+chelsea
I had add :value="keyword" in input type text to udpate value of input type text, but it does not work
How can I solve this problem?
Update
I had find the solution like this :
methods: {
select: function(state) {
this.keyword = state
this.selected = state
const self = this
setTimeout(function () {
self.$refs.submitButton.click()
}, 1500)
},
...
}
It works. But is this solution the best solution? or there is another better solution?
Instead of timeout you can use vue's nextTick function.
I didn't checked your code by executing but seems its problem regarding timings as when submit is pressed your value isn't updated.
so setTimeout is helping js to buy some time to update value, but its 1500 so its 1.5 second and its little longer and yes we can not identify how much time it will take each time so we tempted to put max possible time, still its not perfect solution
you can do something like this. replace your setTimeout with this one
const self = this
Vue.nextTick(function () {
// DOM updated
self.$refs.submitButton.click()
})
nextTick will let DOM updated and set values then it will execute your code.
It should work, let me know if it works or not.
My vue component like this :
<template>
<div>
...
<li v-for="category in categories">
...
<input type="radio" class="category-radio" :value="category.id" (category.id == categoryId) ? 'checked data-waschecked=true' : ''>
...
</li>
...
</div>
</template>
<script>
export default {
props: ['categories', 'categoryId'],
}
</script>
I want to add condition in input type text. I use operator ternary like above code
If the code executed, it does not work
There is no error. So i'm confused to solve it
Maybe my code is still not correct
How can I solve it?
The issue is you're trying to use JavaScript expression inside plain HTML. This won't work.
You can either bind each attribute manually like this:
:checked="(expression) ? true : false"
or bind to a computed property which depends on your expression and returns your calculated property. Alternatively, you can bind an object with one to many properties, and bind the whole object at once (this is possible also):
new Vue({
el: '#app',
data: {
categories: [
{ id: 1, name: 'one' },
{ id: 2, name: 'two' },
{ id: 3, name: 'three' }
],
selectedId: 2 // for simplicity
},
computed: {
attrs: function() {
return function(id) { // computed can also return a function, so you can use args
return (id === this.selectedId) ? { checked: true, 'data-waschecked': true } : {}
}
}
},
mounted() { // log your element
console.log(document.querySelector('input[data-waschecked=true]'))
}
});
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<div id="app">
<ul>
<li v-for="category in categories">
<input type="checkbox" v-bind="attrs(category.id)">
</li>
</ul>
</div>
I work with single file components and have a list in one of them. This list should work like a accordion, but as far as I can find in the Vuejs docs, it's not that easy to make each item open separately very easily. The data (questions and answers) is retrieved from an ajax call. I use jQuery for that, but would like to know how I can make the accordion work Vuejs-style. Any help would be appreciated!
Here's the code:
export default {
name: 'faq-component',
props: ['faqid', 'faqserviceurl', 'ctx'],
data: function () {
return {
showFaq: "",
totalFaqs: this.data,
isOpen: true
}
},
watch: {
'showFaq': function(val, faqid, faqserviceurl) {
var self = this;
$.ajax ({
url: this.faqserviceurl,
type: 'GET',
data: {id: this.faqid, q: val, scope:1},
success: function (data) {
self.totalFaqs = data;
},
error: function () {
$("#answer").html('Sorry');
}
});
}
},
methods: {
'toggle': function() {
this.isOpen = !this.isOpen
}
}
}
<template>
<div class="card faq-block">
<div class="card-block">
<form>
<div class="form-group">
<input class="form-control" type="text" placeholder="Your question" id="faq" v-model="showFaq">
</div>
</form>
<div id="answer"></div>
<ul class="faq">
<li v-for="faq in totalFaqs">
<p class="question" v-html="faq.vraag" v-bind:class={open:isOpen} #click="isOpen = !isOpen"></p>
<p class="answer" v-html="faq.antwoord"></p>
</li>
</ul>
</div>
</div>
</template>
Add an isOpen property to each object in totalFaqs and use that instead of your single isOpen property in data.
<p class="question" v-html="faq.vraag" v-bind:class={open: faq.isOpen} #click="faq.isOpen = !faq.isOpen"></p>
If you can't change the model from the server side, then add it client side.
success: function (data) {
data.forEach(d => self.$set(d, 'isOpen', false))
self.totalFaqs = data
}