Access selected text (not value) of a select element with Vue - vue.js

Just trying to access the selected text (not value) of a select element via Vue:
var App = window.App = new Vue({
el: '#app',
data: {
style: '5'
},
computed: {
calctitle: function() {
return this.otype.text;
}
}
});
Just an example style object:
$item = new stdClass();
$item->value = 5;
$item->text = 'Name 1';
$style = array($item);
...
Here i try to create a binding because if i don't cannot submit the form because the option value is "[object Object]", but i need the real int value.
<p>{{calctitle}}</p>
<select v-model="style" name="style">
<option>Choose style</option>
<?php foreach ($style as $item) : ?>
<option value="<?php echo $item->value; ?>" v-bind:otype="{value: <?php echo $item->value; ?>, text: '<?php echo $item->text; ?>'}"><?php echo $item->text; ?></option>
<?php endforeach ?>
</select>

I don't think you'll be able to do it with a computed, since you don't store the selected option anywhere, only its value.
Instead, you can create a data item and use the change event on the select to pull the selected option and set your data value from its textContent.
new Vue({
el: '#app',
data: {
selectedText: '',
style: '5'
},
methods: {
updateFromSelectedText(event) {
const options = event.target.options;
const selectedOption = options[options.selectedIndex];
this.selectedText = selectedOption.textContent;
}
}
});
<script src="//cdnjs.cloudflare.com/ajax/libs/vue/2.3.3/vue.min.js"></script>
<div id="app">
<p>{{selectedText}} and {{style}}</p>
<select v-model="style" name="style" #change="updateFromSelectedText">
<option>Choose style</option>
<option value="1">One</option>
<option value="2">Two</option>
<!--option value="<?php echo $item->value; ?>" v-bind:otype="{value: <?php echo $item->value; ?>, text: '<?php echo $item->text; ?>'}"><?php echo $item->text; ?></option-->
</select></div>

Related

vuejs checkbox need to change method

I have a dropdown menu that triggers a method to get data based on what is selected in the dropdown. I would like to add a condition that changes the #change method if a checkbox is selected. The method would switch based on which checkbox is selected. I guess a v-if that runs a check somewhere--Im not sure.
new Vue({
el: "#app",
data: {
selection: 'Select a option',
todos: [{
name: 'apple'
}, {
name: 'oranges'
}, {
name: 'carrots'
}]
},
methods:{
changeP (event) {
this.getSetA();
// alert("this is set a");
},
changeP1 (event) {
this.getSetB();
alert("this is set b");
},
changeP2 (event) {
this.getSetC();
alert("this is set c");
}
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<h2>Fruit:</h2>
<select v-model="selection" #change="changeP($event)">
<option value="Select a option" disabled>Choose an fruit:</option>
<option v-for="(t, i) in todos" :key="i" :value="t.name">{{ t.name }}</option>
</select>
<br>
<input type="checkbox" id="vehicle1" name="vehicle1" value="apple"> Apples
<input type="checkbox" id="vehicle2" name="vehicle2" value=""> Oranges
<input type="checkbox" id="vehicle3" name="vehicle3" value="">pears
</div>
new Vue({
el: '#app',
data: {
selection: 'Select an option',
selectOptions: [ { name: 'apple' }, { name: 'oranges' }, { name: 'carrots' }],
checkboxOptions: [ 'vehicle1', 'vehicle2', 'vehicle3' ],
checkedItems: [],
message: '',
},
methods: {
onDropdownChange() {
this.message = '';
if (this.checkedItems.length) {
this.message = `You've selected: `;
for(let i = 0; i < this.checkedItems.length; i++) {
this.message += this.checkedItems[i] + ' ';
}
}
switch(this.selection) {
case 'apple':
return this.onAppleSelected();
case 'oranges':
return this.onOrangesSelected();
default:
return this.onCarrotsSelected();
}
},
onAppleSelected() {
if (this.message.length) {
this.message += 'and apple.';
return;
}
this.message = `You've selected apple`;
},
onCarrotsSelected() {
this.message += ' CARROT!'
},
onOrangesSelected() {
this.message += ' No Scurvy';
}
},
template: `
<div id="app">
<h2>Fruit:</h2>
<select v-model="selection" #change="onDropdownChange">
<option value="Select an option">Choose</option>
<option v-for="(o, i) in selectOptions" :key="o.name" :value="o.name">{{o.name}}</option>
</select>
<div style="display:block" v-for="(o, i) in checkboxOptions" :key="o">
<label :for="o">{{o}}</label>
<input type="checkbox" :id="o" :name="o" :value="o" v-model="checkedItems" />
</div>
<p>{{message}}</p>
</div>
`
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
</div>
You should probably have a single method that decides which method to call based on the state of the component.

Data from array not appear?

I am trying to fetch data from the database and display it in Home.vue file,
when go to Vue tab in browser (Hotels:Array[0])
file: Home.vue
<template>
<div class="home">
<form>
<div class="inputcontainer">
<input
class="searchc"
type="text"
v-model="searchcity"
placeholder="Search by city..."
/>
</div>
<div class="wrapper">
<div class="card" v-for="htl in searchcityfunc" :key="htl.id">
<img :src="htl.img" alt="Hotel Image" style="width:100%" />
<h1 class="name">{{ htl.name }}</h1>
<p class="price">{{ htl.price }}</p>
<p class="city">{{ htl.city }}</p>
<p class="button"><button>Reed more</button></p>
</div>
</div>
</form>
</div>
</template>
<script>
// # is an alias to /src
import axios from "axios";
var Hotels = [];
export default {
name: "Home",
data() {
return {
searchcity: "",
Hotels,
};
},
methods:{
fetchAllData: function(){
axios.post('http://localhost//web//action.php',{
action:'fetchall',
}).then(function(response){
Hotels = response.data;
console.log(Hotels);
})
},
searchcityfunc() {
return Hotels.filter((srh) =>
this.searchcity != "" ? !srh.city.indexOf(this.searchcity) : ""
);
},
},
created:function(){
this.fetchAllData();
}
,
};
</script>
From my PHP file, I connected to the database and fetched all the records and encoded them
file: action.php
<?php
$servername = "localhost";
$username = "root";
$password = "";
$DBname = "HotelsDB";
$connection = new mysqli($servername,$username,$password,$DBname);
$received_data = json_decode(file_get_contents("php://input"));
$data = array();
if($received_data->action == 'fetchall'){
$sql = "SELECT * FROM Hotels";
$statement = $connection->prepare($sql);
$statement->execute();
$result = $statement->get_result();
while($row = $result->fetch_assoc()){
$data[] = $row;
}
echo json_encode($data);
}
?>
and when trying to search by city nothing appears and Hotels array is (0).

How to display input input fields on condition in VueJs

Below is my html code with Vue instance. I need to display the input fields on condition using a value that i will get from database. I have chosen to define the value manually to try it out
<div id="codeTest">
<input id="input1" type="text" />
<input id="input2" type="text" />
{{$data}}
</div>
<script type="text/javascript">
var inputVM= new Vue({
el:"#codeTest",
data:function(){
return{
value:1
}
},
created:function(){
this.showInput();
},
methods:{
showInput:function(value){
if(value==1){
document.getElementById("input1").style.display = '';
document.getElementById("input2").style.display = 'none';
}
else if(value==2){
document.getElementById("input1").style.display = '';
document.getElementById("input2").style.display = '';
}
}
}
})
`I am getting two input field instead of one. How do i go about it? Thanks in advance`
//document.getElementById("test").style.display = 'none';
</script>
Please reference for Vue v-if, v-show https://v2.vuejs.org/v2/guide/conditional.html
<div id="codeTest">
<input v-show="value == 1" id="input1" type="text" />
<input v-show="value == 2" id="input2" type="text" />
{{$data}}
</div>
<script type="text/javascript">
var inputVM= new Vue({
el:"#codeTest",
data: function() {
return {
value: 1
}
},
created: function(){
this.getValueFromDatabase();
},
methods: {
getValueFromDatabase: function() {
const valueData = callApiMethod(); // not defined
this.value = valueData // 1 or 2
}
}
})
</script>

Vue multiple select form independent from each other

I need a solution how to make as many select form as my option data length and each form must be independent from each other. It means that if i chooce selected value in one form it must do not overide selected value in others form. Also i need pre-set selected value in each form (for the first form it need to show selected first choice, for second = second choice and so on.)
var app = new Vue({
el: "#app",
delimiters: ["[[", "]]"],
data: {
selected: '',
options: [
{ id: 20 , supp_name: 'test1' },
{ id: 21 , supp_name: 'test2' },
{ id: 34 , supp_name: 'supertest' },
]
},
})
<div margin="20px" v-for='option in options'>
<form action="">
<select v-model="selected">
<option v-for="option in options" v-bind:value="option.supp_name">
[[option.supp_name]]
</option>
</select>
<span>Chosen: [[selected]]</span>
</form>
</div>
It display 3 forms but when I make a choice in on one form it override all forms. How could it be fixed?
You will need as many selected references as there are forms.
For example
var app = new Vue({
el: "#app",
delimiters: ["[[", "]]"],
data: {
selected: [], // make selected an array
options: [{"id":20,"supp_name":"test1"},{"id":21,"supp_name":"test2"},{"id":34,"supp_name":"supertest"}]
},
watch: {
options: {
immediate: true,
handler (options) {
// initialise to the "supp_name" from options
this.selected = options.map(({ supp_name }) => supp_name)
}
}
}
})
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.min.js"></script>
<div id="app">
<div v-for="(_, i) in selected">
<form action="">
<select v-model="selected[i]">
<option v-for="option in options" :value="option.supp_name">
[[ option.supp_name ]]
</option>
</select>
<span>Chosen: [[ selected[i] ]]</span>
</form>
</div>
<pre>selected = [[ selected ]]</pre>
</div>
This synchronises the selected array to be the same length as options then binds each form's <select> to the array index.

Vuejs + Materializecss select field

I have this code in my template:
<div class="input-field col s6">
<select v-on:change="selectChaned" v-model="item.size">
<option value="" disabled selected>Choose your option</option>
<option v-on:click="optionClicked" v-for="size in case_sizes" v-bind:value="{{ size }}">{{ size }}</option>
</select>
<label for="size">Size</label>
</div>
According to Materializecss docs, I call $('select').material_select(); to transform default select field into something cutie. What it also does - it replaces <select> and <option> tags with <ul> and <li>.
As a result I can't access value of item.size in my ViewModel js file. I even tried to listen for a click on option field and call optionClicked method (which should simply alert a message then), tried to listen for selectChaned. Nothing.
How can I get option value in ViewModel?
p.s. just for information: I only have problem with select field. Input field for example works fine:
<input placeholder="" name="name" type="text" class="validate" v-model="item.name">
In ViewModel I'm able to access item.name
It seems that Materialize doesn't dispatch any events so I couldn't find an elegant solution. But it does seem that the following Vuejs directive + jQuery workaround is working:
Vue.directive("select", {
"twoWay": true,
"bind": function () {
$(this.el).material_select();
var self = this;
$(this.el).on('change', function() {
self.set($(self.el).val());
});
},
update: function (newValue, oldValue) {
$(this.el).val(newValue);
},
"unbind": function () {
$(this.el).material_select('destroy');
}
});
And then in your HTML – bind <select> using v-select instead of v-model.
Vue.js 2.0
Template:
<div v-text="selected"></div>
<material-select v-bind="selected = selected || options[0].value" v-model="selected">
<option v-for="option in options" :value="option.value" v-text="option.name"></option>
</material-select>
Component:
"use strict";
Vue.component("material-select", {
template: '<select><slot></slot></select>',
props: ['value'],
watch: {
value: function (value) {
this.relaod(value);
}
},
methods:{
relaod : function (value) {
var select = $(this.$el);
select.val(value || this.value);
select.material_select('destroy');
select.material_select();
}
},
mounted: function () {
var vm = this;
var select = $(this.$el);
select
.val(this.value)
.on('change', function () {
vm.$emit('input', this.value);
});
select.material_select();
},
updated: function () {
this.relaod();
},
destroyed: function () {
$(this.$el).material_select('destroy');
}
});
Vue.directive('material-select', {
bind:function(el,binding,vnode){
$(function () {
$(el).material_select();
});
var arg = binding.arg;
if(!arg)arg="change";
arg = "on"+arg;
el[arg]=function() {
if (binding.expression) {
if (binding.expression in vnode.context.$data) {
vnode.context.$data[binding.expression] = el.value;
} else if (vnode.context[binding.expression] &&
vnode.context[binding.expression].length <= 1) {
vnode.context[binding.expression](el.value);
} else {
throw new Error('Directive v-' + binding.name + " can not take more than 1 argument");
}
}
else {
throw new Error('Directive v-' + binding.name + " must take value");
}
}
},
unbind:function(el) {
$(el).material_select('destroy');
}
});
new Vue({
el: '#exemple1',
data:function(){
return {
selected: '',
options:[
{value:"v1",text:'description 1'},
{value:"v2",text:'description 2'},
{value:"v3",text:'description 3'},
{value:"v4",text:'description 4'},
{value:"v5",text:'description 5'},
]
}
}
});
new Vue({
el: '#exemple2',
data:function() {
return{
selected: null,
options:[
{value:"v1",text:'description 1'},
{value:"v2",text:'description 2'},
{value:"v3",text:'description 3'},
{value:"v4",text:'description 4'},
{value:"v5",text:'description 5'},
]
}
},
methods:{
change:function(value){
this.selected = value;
alert(value);
}
}
});
<link href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.98.0/css/materialize.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.1.10/vue.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.98.0/js/materialize.min.js"></script>
<h4>vue js materialize</h4>
<h5>Exemple1</h5>
<div id="exemple1">
<select v-material-select:change="selected" class="blue-text">
<option value="" disabled selected ><slot>Defaut message</slot></option>
<option v-for="option in options" :value="option.value">{{ option.text}}</option>
</select>
</div>
<h5>Exemple2</h5>
<div id="exemple2">
<select v-material-select:change="change" class="blue-text">
<option disabled selected ><slot>Choisir Votre Abonnement</slot></option>
<option v-for="option in options" :value="option.value">{{ option.text}}</option>
</select>
</div>
The top answer was nice but didn't work for Vue 2.
Here is an update of which works (probably still a little hacky). I moved the jQuery hook into update() as the bind function called too early for materialize.
Vue.directive("select", {
"twoWay": true,
update: function(el, binding, vnode) {
if(!vnode.elm.dataset.vueSelectReady) {
$(el).on('change', function() {
vnode.context.$set(vnode.context, binding.expression, el.value);
});
$(el).material_select();
vnode.elm.dataset.vueSelectReady = true
}
},
unbind: function(el, binding, vnode) {
$(el).material_select('destroy');
}
});
HTML:
<select v-select=selected>
<option value="" disabled selected>Choose your option</option>
<option :value="item" v-for='item in items'>{{ item }}</option>
<label>Materialize Select</label>
</select>
You can make the dynamic select in Vue + Materializecss work with simple hacks
$('#select').val(1).material_select(); // Set value and reinitialize materializecss select
mounted () {
$("#select").change(function(){
this.update_result.category = $("#select").val();
}.bind(this)); // To set the user selected value to the data property
update_result.
}
If you are using meterializecss beta version the function name to initialize the select will differ.
I had a similar problem. The catch here is, you need to issue $('select').material_select(); only after the DOM of your Vue app is ready. So you can add a ready method to your Vue app and include $('select').material_select(); inside your ready method.
var vm = new Vue({
data: function() {
locations: ["Clayton", "Mt Meigs", "Birmingham", "Helena", "Albertville", "Albertville", "Grant"]
},
ready: function() {
$('select').material_select();
}});
Just make sure you include Jquery first, then materialize.js followed by Vue.js in your html file.
I want to include a working fiddle of custom select2 directive which I built for my project. It also supports multiple selects:
fiddle
data: function() {
return {
names: [
{id: 1, value: 'Alice'},
{id: 1, value: 'Bob'},
{id: 1, value: 'Simona'}
],
myStudents: {
names: ['Alice', 'Bob'],
}
}
},
directives: {
'select': {
twoWay: true,
params: ['options'],
bind: function () {
var self = this
$(this.el).select2().on('change', function() {
self.set($(self.el).val())
})
},
update: function (value) {
$(this.el).val(value).trigger('change')
},
},
},
<select multiple v-select="myStudents.names" name="names" v-model="myStudents.names">
<option v-for="name in names" value="{{ name.value }}">{{ name.value }}</option>
</select>
v- VueJs2.4
None of the above answers were for multiple select element. I got it working by traversing the select element options. This is not a correct approach and kind of hack but works.
Plunker
<h4>vue js materialize select</h4>
<div class="row" id="app" style="padding-bottom:2em;">
<div class="input-field col s12 m8">
<select multiple v-material-select:change="selected">
<option value="AngularJs">AngularJs</option>
<option value="Bootstrap3">Bootstrap3</option>
<option value="Bootstrap4">Bootstrap4</option>
<option value="SCSS">SCSS</option>
<option value="Ionic">Ionic</option>
<option value="Angular2">Angular2</option>
<option value="Angular4">Angular4</option>
<option value="React">React</option>
<option value="React Native">React Native</option>
<option value="Html5">Html5</option>
<option value="CSS3">CSS3</option>
<option value="UI/UX">UI/UX</option>
</select>
<label>Technologies Used</label>
</div>
<h2>Your selected options</h2>
<p>{{$data.selected}}</p>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/js/materialize.min.js"></script>
<script src="https://unpkg.com/vue#2.4.4/dist/vue.js"></script>
<script> Vue.directive("material-select", {
bind: function(el, binding, vnode) {
$(function() {
$(el).material_select();
});
var arg = binding.arg;
if (!arg) arg = "change";
arg = "on" + arg;
el[arg] = function() {
vnode.context.$data.selected = [];
for (let i = 0; i < 12; i++) {
if (el[i].selected === true) {
vnode.context.$data.selected.push(el[i].value);
}
}
};
},
unbind: function(el) {
$(el).material_select("destroy");
}
});
var app = new Vue({el: "#app",data: { selected: []},
ready: function() {
$("select").material_select(); }});</script>
The possible solution that I found is to use an input, and attach it to a dropdown content. It works well with vue even when you are dynamically creating dropdown. And its reactive, that you don't have to emit any other event to bind values.
Codepen: https://codepen.io/aaha/project/editor/DGJNLE
<style>
input{
cursor: pointer;
}
.caret{
float:right;
position: relative;
cursor: pointer;
top:-50px;
}
ul{
width: 100%;
}
</style>
<script>
Vue.component('paper-dropdown', {
template: '<div> \
<div class="input-field">\
<input type="text" class="dropdown-button" v-bind:data-activates="_id"\
v-bind:value="value"> \
<label>{{label}}</label> \
</div> \
<i class="material-icons caret">arrow_drop_down</i>\
<ul v-bind:id="_id" class="dropdown-content"> \
<li v-for="item in options" v-on:click="setselected"><a v-bind:value="item">{{item}}</a></li> \
</ul>\
</div>',
watch: {
value: function(){
Materialize.updateTextFields();
}
},
computed:{
_id: function(){
if(this.id != null) return this.id;
return Math.random().toString(36).substr(2);
}
},
props: {
label:{
type: [String, Number],
default: ''
},
options:{
type: Array,
default: []
},
placeholder:{
type: String,
default: 'Choose your option'
},
value:{
type: String,
default: ''
},
id:{
type: String,
default: 'me'
}
},
methods:{
setselected: function(e){
this.$emit('input', e.target.getAttribute("value"));
}
},
mounted: function(){
$('.dropdown-button').dropdown({
inDuration: 300,
outDuration: 225,
constrainWidth: false, // Does not change width of dropdown to that of the activator
hover: false, // Activate on hover
gutter: 0, // Spacing from edge
belowOrigin: false, // Displays dropdown below the button
alignment: 'left', // Displays dropdown with edge aligned to the left of button
stopPropagation: false // Stops event propagation
}
);
}
});
</script>
I did something much more simple, only on mounted:
....
mounted() {
$(this.$el)
.find(".mdb-select")
.material_select();
const self = this;
$(this.$el).on("change", function(e) {
self.$emit('input', this.inputValue);
});
},
.....