Pass v-model value - vuejs2

Is it possible to pass v-model value to another component ? I have HTML code is like below
<div id='example-3'>
<input type="checkbox" id="jack" value="Jack" v-model="checkedNames">
<label for="jack">Jack</label>
<input type="checkbox" id="john" value="John" v-model="checkedNames">
<label for="john">John</label>
<input type="checkbox" id="mike" value="Mike" v-model="checkedNames">
<label for="mike">Mike</label>
</div>
vue.js code is like below
data: {
checkedNames: []
}
I can use this v-model value in same component using below code.
<span>Checked names: {{ checkedNames }}</span>
But how can I use v-model value in another component ?

You can emit events with the v-model value each time one of the checkboxes is ticked:
<input type="checkbox" id="mike" value="Mike" v-model="checkedNames" #change="onChange">
<label for="mike">Mike</label>
methods: {
onChange () {
this.$root.$emit('checkbox.changed', this.checkedNames)
}
}
Listen for the event in another component:
// my-component.js
created () {
this.$root.$on('checkbox-changed', payload => {
// do something with payload...
}
}
In the context of components, you should always be declaring the data property as a function, too.
data () {
return {}
}
Your other option is using a state management strategy, i.e.
Vuex, or similar.

Related

true / false in input (vuejs), probably without v-model

I have an array with many checkbox.
<li v-for='item in resultQuery' :key='item.id'>
<label class='custom-checkbox'>
<input type='checkbox' :value='item.id' v-model='checkBrands'>
<span #click='loadProducts(item.seoName)>{{ item.title }}</span>
</label>
</li>
I need to get true or false (depends on checkbox). How can I do this without affecting the v-model? (Use it to transfer an array of selected checkbox).
Needed to trigger a specific mutation
.then((response) => {
if(true) {
this.$store.commit(
'showFilteredList',
response.data.items
);
} else {
this.$store.commit(
'deleteCheckboxItems',
response.data.items
);
}
});
You can using #change on checkbox.
Example: https://codepen.io/koei5113/pen/ZEXLLgL
<input type='checkbox' :value='item.id' v-model='checkBrands' #change="changeEvent">
methods: {
...,
changeEvent($event) {
console.log($event.target.checked);
}
}
In this example you can see your v-model still working and you still can check checkbox status by the change event.
v-model ignore the :value in the input. You need to use :checked and #change
For example, and when you emit the change event use your function.
<input type="checkbox" :checked="value" #change="changeArrayNotValue" />

Modify checkbox behavior in vue js

I have this checkbox
<div class="form-check form-check-inline col-lg-2">
<input v-model="propertyData.fitness_centre" type="checkbox" class="form-check-input" id="dc_li_u" />
<label class="form-check-label" for="dc_li_u">Fitness Centre</label>
</div>
and i am saving the state in a database so when editing the state is restored and displays whether the checkbox was checked or not.
However, i need the checkbox to have a string value that is saved to the database when the checkbox is clicked such that when a checkbox has a string value, its checked and when the string value is empty the checkbox is not checked.
I have many checkboxes and so, i wanted the entire logic to be contained inside the checkbox. How can i modify the checkbox to do this?
You can use true-value and false-value attributes, to assign specific values when checking/unchecking.
new Vue({
el: "#app",
data: {
fitness_centre: "true value"
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div class="form-check form-check-inline col-lg-2">
<input v-model="fitness_centre" true-value="true value" false-value="" type="checkbox" class="form-check-input" id="dc_li_u" />
<label class="form-check-label" for="dc_li_u">Fitness Centre</label>
<div>Value: {{ fitness_centre }}</div>
</div>
</div>
You could use a change-event handler to set propertyData.fitness_centre to the desired value based on the checked state. Also bind <input>.checked to propertyData.fitness_centre so that the checked state is bound to the model's truthiness (empty string is false, otherwise true).
<template>
<input type="checkbox"
#change="onChange"
:checked="propertyData.fitness_centre"
value="fitness_centre">
</template>
<script>
export default {
data() {
return {
propertyData: { fitness_centre: '' }
}
},
methods: {
onChange(e) {
this.propertyData.fitness_centre = e.target.checked ? e.target.value : ''
}
}
}
</script>
demo

Vue click two input one button

I want to pick a new value when the button is clicked, but I can't
<div class="col-lg-12 col-sm-6 col-4" style="margin-top:5px;">
<p style="margin-bottom:0rem;" > Цена</p>
<label>
<input id="PriceRangeMin" type="number" :value='text' >
-
<input id="PriceRangeMax" placeholder="до" type="number" :value='text1'>
</label>
<button id="PriceRangeMin" type="submit" style="margin-left:30px;" #click='textcon()'>Применить</button>
</div>
My script
<script>
export default {
name: 'Applesmartphone',
data () {
return {
text:[],
text1:[]
}
},
methods: {
textcon(){
console.log(text)
console.log(text1)
}
}
}
Hi, I want to pick a new value when the button is clicked, but I can't.
Bind input to properties using v-model like :
input id="PriceRangeMin" type="number" v-model='text' >
then use this to access that properties inside the method :
textcon(){
console.log(this.text)
console.log(this.text1)
}

Binding getter array to checkbox group

I have a two page form so I am trying to mix submitting data to the server as well as making use of vuex. So on page one, I have a simple form which contains a group of checkboxes (removed layout and styling to reduce code)
<b-form #submit.stop.prevent="onSubmit">
<b-form-group>
<input v-model="$v.form.checkboxGroup.$model" type="checkbox" name="checkbox1" value="1">
<input v-model="$v.form.checkboxGroup.$model" type="checkbox" name="checkbox2" value="2">
<input v-model="$v.form.checkboxGroup.$model" type="checkbox" name="checkbox3" value="3">
</b-form-group>
<button class="btn try-btn" type="submit">Submit</button>
</b-form>
Essentially, when submitted, I send the form data to my repository so it can be saved on the backend. If this is successful, I call the following method
handleSubmitSuccess (response) {
if (response.data.action === 'next_step') {
this.$store.dispatch('createCheckboxData', this.$v.form.$model)
return
}
}
This method sets the checkbox data in my store and routes the user to the next page (removed this part). So all of this is fine, seems to work well.
So when on page two, I have a button that can take you back to page one. My idea is that if this happens, I use the previously checked data in the store to auto check the previously selected checkbox. As such, on page one I added a computed method
computed: {
checkboxData () {
return this.$store.getters.checkboxData
}
}
Now if I output checkboxData to the console, it seems to be an Observer object
[{…}, __ob__: Observer]
0:
checkboxData: Array(2)
0: "1"
1: "3"
length: 2
So the above shows that previously, the first and second checkboxes were checked.
My question is how can I now use this data to auto-check my checkboxes. I have seen some examples online, but they do not seem to work.
Thanks
The way you use Vue is a little different to me so you might have to change this but, basically, you can set your v-model to whatever array is set in the Vuex store and it will set those checkboxes to true:
new Vue({
el: "#app",
data: {
checkbox: [],
vuexData: ['1', '3']
},
mounted() {
this.checkbox = this.vuexData;
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<input v-model="checkbox" type="checkbox" name="checkbox1" value="1">
<input v-model="checkbox" type="checkbox" name="checkbox2" value="2">
<input v-model="checkbox" type="checkbox" name="checkbox3" value="3">
{{ checkbox }}
</div>

vuejs set a radio button checked if statement is true

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>