I'd like to make default checked on radio buttons inside a v-for loop.
Here is the code:
<ul v-for="p in photos">
<li>
<div>
<div>
<div>
Visibility: {{p.visible}}
</div>
<strong>Visibility setting</strong><br>
<input type="radio" v-model="p.visible" name="visibility" value="all" :checked="p.visible == 'all'"> All <br>
<input type="radio" v-model="p.visible" name="visibility" value="fav" :checked="p.visible == 'fav'"> My favorites <br>
<input type="radio" v-model="p.visible" name="visibility" value="none" :checked="p.visible == 'none'"> No one
</div>
<div><img" v-bind:src="BASE_URL +'/uploads/' + userId + '/'+ p.imgId" /> </div>
</div>
</li>
</ul>
I followed this answer.
While I can see Visibility of each item is being printed, the default radio buttons of each photo are not checked as expected.
Here is the photos array which I receive from the server when the component is created:
[
{
"id" : "5bcebb6efeaea3147b7a22f0",
"imgId" : "12710.png",
"visible" : "all"
},
{
"id" : "5bcebbf0feaea3147b7a22f1",
"imgId" : "62818.png",
"visible" : "fav"
},
{
"id" : "5bcec010feaea3147b7a22f2",
"imgId" : "36740.png",
"visible" : "none"
}
],
What is wrong here and how can I fix it?
Don't use :checked:
v-model will ignore the initial value, checked or selected attributes found on any form elements. It will always treat the Vue instance data as the source of truth. You should declare the initial value on the JavaScript side, inside the data option of your component.
If v-model is the same as value it will return true for that checkbox. Your fixed fiddle:
new Vue({
el: '#app',
data: {
photos: [{
"id": "5bcebb6efeaea3147b7a22f0",
"imgId": "12710.png",
"visible": "all"
},
{
"id": "5bcebbf0feaea3147b7a22f1",
"imgId": "62818.png",
"visible": "fav"
},
{
"id": "5bcec010feaea3147b7a22f2",
"imgId": "36740.png",
"visible": "none"
}
],
}
})
<script src="https://unpkg.com/vue"></script>
<div id="app">
<ul v-for="(p, index) in photos">
<li>
<div>
Visibility: {{p.visible}}
</div>
<strong>Visibility setting</strong><br>
<input type="radio" v-model="photos[index].visible" :name=`visibility-${index}` value="all"> All <br>
<input type="radio" v-model="photos[index].visible" :name=`visibility-${index}` value="fav"> My favorites <br>
<input type="radio" v-model="photos[index].visible" :name=`visibility-${index}` value="none"> No one
</li>
</ul>
</div>
Now each radio group has it's own name, with v-model targeting that group (note the index).
Related
I have a dropdown list "functions" that is filled with database entries and a dropdown list with 2 hardcoded entries. When the vue website is opened the dropdown list remains empty but as soon as I change the value of the other dropdown field the desired data from the database is available.
I'm a bit confused because I expected that adding "retrieveFunctions()" into the mounted() function would trigger the v-for, and even more confused that changing something in another select field suddenly triggers it.
The HTML code:
<template>
<div class="submit-form">
<div v-if="!submitted">
<div class="row">
<div class="col-sm-12">
<p><a style="width:500px" class="btn btn-info" data-toggle="collapse" href="#generalInformation" role="button" aria-expanded="true" >
General Information</a></p>
<div class="collaps show" id="generalInformation">
<!-- NAME -->
<div class="form-group">
<input placeholder="Name" type="text" class="form-control"
id="name" required v-model="component.name" name="name">
</div>
<!-- DOMAIN -->
<div class="input-group mb-3">
<div class="input-group-prepend">
<label style="width:100px" class="input-group-text" for="inputGroupDomain">Domain</label>
</div>
<select v-model="component.domain"
class="custom-select"
id="inputGroupDomain"
>
<option value="Power System">Power System</option>
<option value="ICT">ICT</option>
</select>
</div>
<!-- FUNCTION -->
<div class="input-group mb-3">
<div class="input-group-prepend">
<label style="width:100px" class="input-group-text" for="inputGroupFunction">Functions</label>
</div>
<select v-model="_function" class="custom-select" id="inputGroupFunction">
<option :class="{ active: index == currentIndex }"
v-for="(_function, index) in functions"
:key="index"
value= _function.name>
{{ _function.name }}
</option>
</select>
</div>
</div>
<p>
<button #click="saveComponent" class="btn btn-success">Add Component</button>
</p>
</div>
</div>
</div>
<div v-else>
<h4>Component was added succesfully!</h4>
<button class="btn btn-success" #click="newComponent">Proceed</button>
</div>
The script part:
<script>
import FunctionDataService from "../services/FunctionDataService";
export default {
name: "add-component",
data() {
return {
component: {
id: null,
name: "",
type: "",
domain: "",
},
submitted: false
};
},
methods: {
retrieveFunctions() {
FunctionDataService.getAll()
.then(response => {
this.functions = response.data;
console.log(response.data);
})
.catch(e => {
console.log(e);
});
},
refreshList() {
this.retrieveFunctions();
},
},
mounted() {
this.retrieveFunctions();
}
};
</script>
refreshList() {
this.retrieveFunctions();
},
},
mounted() {
this.retrieveFunctions();
}
};
</script>
State in the beginning: Dropdown list empty
State after selecting something in the upper dropdown list: Database entries are visible and correct
You need to initiate all responsive properties on the data return object with either a value (empty string, array, object, etc) or null. Currently it's missing the _function attribute used in the select v-model and the functions array used in the v-for. You can try to change the data to the following:
data() {
return {
_function: "",
functions: [],
component: {
id: null,
name: "",
type: "",
domain: "",
},
submitted: false
};
},
Looking for some tips on how to nest objects inside objects using a form. My form currently changes the key and value of an object. However, I'm now wanting a second button to be able to create a child (correct termanology?)form input. below you can see an example. I've spent the morning looking at props but I'm unsure if this is the correct way to go, any suggestions are greatly appriciated
{
"color": "black",
"category": "hue",
"type": "primary",
"code": {
"rgba": [255,255,255,1],
"hex": "#000"
}
},
<form id="app">
<h1>
Title goes here
</h1>
<hr>
<div class="row">
<div class="col-xs-2">
<button type="button" v-on:click="addNewObject" class="btn btn-block btn-success">
(Add +) Parent
</button>
</div>
<div class="col-xs-10 text_info">
Click 'Add +' to add an object
</div>
</div>
<div v-for="(object, index) in objects">
<div class="row">
<div class="col-xs-1">
<label> </label>
<button type="button" v-on:click="removeObject(index)" class="btn btn-rem btn-block btn-danger">
Delete
</button>
<button type="button" v-on:click="addNewChildObject()" class="btn btn-rem btn-block btn-success btn-suc">
add { }
</button>
</div>
<div class="form-group col-xs-7">
<div class="test">
<select v-model="object.type" class="selectBox classic">
<option value="" disabled selected hidden>Choose Datatype</option>
<option v-for="type in types"> {{ type }}</option>
</select>
<input v-model="object.name" :name="'objects[' + index + '][name]'" type="string" class="form-control" placeholder="Enter key">
<input v-model="object.dataValue" :name="'objects[' + index + '][dataValue]'" type="string" class="form-control" placeholder="Enter value">
</div>
</div>
</div>
</div>
<hr>
<div>
<pre v-if="seen">{{ mappedObjects }}</pre>
</div>
<button type="button" class="btn-primary" v-on:click="seen = !seen">{{ seen ? 'Click to Hide the JSON' : 'Click to Show the JSON' }}</button>
</form>
const getDefaultObject = () => ({
name: '',
dataValue: '',
type: ''
})
const app = new Vue({
el: '#app',
computed: {
mappedObjects() {
return this.objects.map(({
name,
dataValue,
type
}) => ({
[name]: dataValue,
type
}))
}
},
props: {
},
data() {
return {
seen: false,
types: ['string', 'character', 'number', 'int', 'floating-point', 'boolean', 'date;'],
objects: []
}
},
methods: {
addNewObject: function() {
this.objects.push(getDefaultObject())
},
removeObject: function(index) {
Vue.delete(this.objects, index);
},
addNewChildObject: function () {
}
}
})
If you want n forms with n children just create a model for it following that same structure and pass props to the form.
parent = {
...props,
children: []
}
child = {
...props
}
If the forms are too complex (or a little complex really), split them in separate components and pass children as props.
If you want to use the same form both in parent and children take a look at slots, they will allow you to create flexible layouts.
I'm asking if we have similar attribute as standalone in vuejs.
I want to add items in certifications.
Here is the button add :
<l-button #click="Add()"><i class="fa fa-plus"> </i></l-button>
The add function:
Add() {
this.certifications.push( item);
this.newItemAdded = true
},
<div v-for="(item,index) in certifications">
<fg-input type="text" required
:label="$t('candidate.certification.title')"
:placeholder="$t('candidate.certification.title')"
:disabled="disableIt && !newItemAdded ">
</fg-input>
</div>
My problem is that when i add new item, the previous input also is enabled.
I want to know if there is somathing similar to standalone( like angular) in vuejs.
You must use the index and length of certifications
<div v-for="(item,index) in certifications">
<fg-input type="text" required
:label="$t('candidate.certification.title')"
:placeholder="$t('candidate.certification.title')"
:disabled="(index+1!==certifications.length)">
</fg-input>
</div>
and when you need edit button:
data() {
return {
certifications: [],
editableIndex: null
}
},
methods: {
Add() {
...
},
Edit(index) {
this.editableIndex = index
},
}
}
and in template
<template>
<div>
<div v-for="(item,index) in certifications">
<fg-input type="text" required
:label="$t('candidate.certification.title')"
:placeholder="$t('candidate.certification.title')"
:disabled="(index+1!==certifications.length&&editableIndex===null) || editableIndex===index">
</fg-input>
<l-button #click="Edit(index)"><i class="fa fa-pen"> </i></l-button>
</div>
<l-button #click="Add()"><i class="fa fa-plus"> </i></l-button>
</div>
</template>
I'm trying to create a form where I have a select list (fetched from API) and user can add items into a seperate array from this list. New array is also rendered via v-for and uses v-model to edit some additional data.
For example I have a list of goods/services defined beforehand which will be rendered into select option block. Now user can select one of these products and add them to a invoice. After adding (pushed to a new array), user must be able to make some additional changes.
<select class="form-control" v-model="selectedServiceId">
<option v-for="service in services" :value="service._id">{{service.name}}</option>
</select>
<button type="button" class="btn btn-primary" v-on:click="addService">Add</button>
add service method:
addService() {
for (var i = 0; i < this.services.length; i++) {
if (this.services[i]._id == this.selectedServiceId) {
this.services_goods.push(this.services[i])
break;
}
}
}
And now I want to render the list I've pushed into:
<ul>
<li v-for="(item, key) in services_goods">
<span>{{item.name}}</span>
<label for="itemPrice">Price €
<input id="itemPrice" v-model="item.price">
</label>
<label for="itemQty">Quantity
<input type="number" min="1" id="itemQty" v-model="item.quantity">
</label>
<div>
<button type="button" v-on:click="removeService(item._id)">X</button>
</div>
</li>
</ul>
everything is fine up until I add the same item twice and try to modify the price for one of them - it changes price for both.
The reason it changes the price for both is that they are the same object. When you insert an object into an array, the value in the array is a reference to the object. You have two references to the same object.
Each object you insert into the array should be newly created, with contents copied from the selected item.
new Vue({
el: '#app',
data: {
selectedServiceId: null,
services: [{
_id: 1,
price: 1,
quantity: 1,
name: 'First'
},
{
_id: 2,
price: 2,
quantity: 2,
name: 'Second'
}
],
services_goods: []
},
methods: {
addService() {
const foundGood = this.services.find((s) => s._id == this.selectedServiceId);
// Object.assign copies an object's contents
this.services_goods.push(Object.assign({}, foundGood));
}
}
});
<script src="//cdnjs.cloudflare.com/ajax/libs/vue/2.2.6/vue.min.js"></script>
<div id="app">
<select class="form-control" v-model="selectedServiceId">
<option v-for="service in services" :value="service._id">{{service.name}}</option>
</select>
<button type="button" class="btn btn-primary" v-on:click="addService">Add</button>
<ul>
<li v-for="(item, key) in services_goods">
<span>{{item.name}}</span>
<label for="itemPrice">Price €
<input id="itemPrice" v-model="item.price">
</label>
<label for="itemQty">Quantity
<input type="number" min="1" id="itemQty" v-model="item.quantity">
</label>
<div>
<button type="button" v-on:click="removeService(item._id)">X</button>
</div>
</li>
</ul>
</div>
I am trying to make a radio button checked using vuejs v-for only if my if-statement is true. Is there a way to use vuejs' v-if/v-else for this type of problem?
in php and html I can achieve this by doing the following:
<input type="radio" <? if(portal.id == currentPortalId) ? 'checked="checked"' : ''?>>
Below is what I have so far using vuejs:
<div v-for="portal in portals">
<input type="radio" id="{{portal.id}}" name="portalSelect"
v-bind:value="{id: portal.id, name: portal.name}"
v-model="newPortalSelect"
v-on:change="showSellers"
v-if="{{portal.id == currentPortalId}}"
checked="checked">
<label for="{{portal.id}}">{{portal.name}}</label>
</div>
I know the v-if statement here is for checking whether to show or hide the input.
Any help would be very much appreciated.
You could bind the checked attribute like this:
<div v-for="portal in portals">
<input type="radio"
id="{{portal.id}}"
name="portalSelect"
v-bind:value="{id: portal.id, name: portal.name}"
v-model="newPortalSelect"
v-on:change="showSellers"
:checked="portal.id == currentPortalId">
<label for="{{portal.id}}">{{portal.name}}</label>
</div>
Simple example: https://jsfiddle.net/b4k6tpj9/
Maybe someone finds this approach helpful:
In template I assign each radio button a value:
<input type="radio" value="1" v-model.number="someProperty">
<input type="radio" value="2" v-model.number="someProperty">
Then in the component I set the value, i.e:
data: function () {
return {
someProperty: 2
}
}
And in this case vue will select the second radio button.
You can follow below option if you can adjust with your logic:
<div class="combination-quantity">
<input type="radio" value="Lost"
v-model="missing_status">
<label for="lost">Lost</label>
<br>
<input type="radio" value="Return Supplier" v-model="missing_status">
<label for="return_supplier">Return Supplier</label>
</div>
Value for missing_status could be "Lost" or "Return Supplier" and based on the value radio option will be get selected automatically.
Below is an example of keeping track of the selected radiobutton, by
applying a value binding to the object (:value="portal") and
applying a v-model binding to the currently selected object (v-model="currentPortal").
The radiobutton will be checked automatically by Vue, when the two match (no :checked binding necessary!).
Vue 3 with composition API
Vue.createApp({
setup() {
const portals = [{
id: 1,
name: "Portal 1"
}, {
id: 2,
name: "Portal 2"
}];
const currentPortal = portals[1];
return {
portals,
currentPortal
}
}
}).mount("#app");
<script src="https://unpkg.com/vue#next"></script>
<div id="app">
<template v-for="portal in portals">
<input
type="radio"
:id="portal.id"
name="portalSelect"
:value="portal"
v-model="currentPortal">
<label :for="portal.id">{{portal.name}}</label>
</template>
</div>
I would like to point out a few options when dealing with radios and vue.js. In general if you need to dynamically bind an attribute value you can use the shorthand binding syntax to bind to and calculate that value. You can bind to data, a computed value or a method and a combination of all three.
new Vue({
el: '#demo',
data() {
return {
checkedData: false,
checkedGroupVModel: "radioVModel3", //some defaul
toggleChecked: false,
recalculateComputed: null
};
},
computed: {
amIChecked() {
let isEven = false;
if (this.recalculateComputed) {
let timeMills = new Date().getMilliseconds();
isEven = timeMills % 2 === 0;
}
return isEven;
}
},
methods: {
onToggle() {
this.toggleChecked = !this.toggleChecked;
return this.toggleChecked;
},
mutateComputedDependentData() {
this.recalculateComputed = {};
}
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.16/vue.min.js"></script>
<div id="demo">
<div>
<div>
<span>Simple Radio Group - Only one checked at a time. Bound to data.checkedData</span><br>
<label>Radio 1 - inverse of checkedData = {{!checkedData}}
<input type="radio" name="group1" value="radio1" :checked="!checkedData">
</label><br>
<label>Radio 2 - checkedData = {{checkedData}}
<input type="radio" name="group1" value="radio2" :checked="checkedData">
</label><br>
<span>Understanding checked attribute: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-checked</span>
</div>
<br>
<div>
<span>Simple Radio - Checked bouned to semi-random computed object</span><br>
<label>Radio 1: {{amIChecked}}
<input type="radio" :checked="amIChecked">
</label>
<label>Recalculate Computed Value
<button type="button" #click="mutateComputedDependentData">Click Me Several Times</button>
</label>
</div>
<br>
<div>
<span>Simple Radio Group - v-model bound value = {{checkedGroupVModel}}</span><br>
<label>Simple Radio 1:
<input type="radio" name="vModelGroup" value="radioVModel1" v-model="checkedGroupVModel">
</label><br>
<label>Simple Radio 2:
<input type="radio" name="vModelGroup" value="radioVModel2" v-model="checkedGroupVModel">
</label><br>
<label>Simple Radio 3:
<input type="radio" name="vModelGroup" value="radioVModel3" v-model="checkedGroupVModel">
</label>
</div>
<br>
<div>
<span>Simpe Radio - click handler to toggle data bound to :checked to toggle selection</span><br>
<label>Toggle Radio = {{toggleChecked}}
<input type="radio" :checked="toggleChecked" #click='onToggle()'>
</label>
</div>
</div>
</div>