So I am working with Knockout inside Magento 2.3.4, and I am setting a custom observable value on initialize, and then I am trying to access that observable and change the value inside a function. Every time I try, I keep getting "it is not a function", and it won't let me either retrieve and read the current observable value, or set a new one. When I try to run .isObservable() on it it comes up as false. I have looked through various examples of how to do it and tried all of them and none of them work. Currently my knockout JS form looks like this:
define([
'jquery',
'uiComponent',
'ko'
], function($, Component, ko) {
'use strict';
return Component.extend({
defaults: {
template: 'Shmoop_Cms/career-form'
},
progressText: ko.observable(false),
initialize: function() {
var self = this;
this._super();
this.progressText('1 of 15 questions completed');
return this;
},
showNext: function() {
let dataIndex = parseInt($('.quiz-card.show').attr('data-index')) + 1;
alert(ko.isObservable(this.progressText));
alert(this.progressText());
this.progressText(dataIndex + ' of 15 questions completed');
}
});
});
I am able to set the progressText value initially inside that initialize function without issue, and it recognizes there that it is an observable. Why does it say it's not an observable inside by "showNext" function?
FYI I have also tried adding "var self = this" inside my function, I have also tried "self.progressText()" instead of "this.progressText()", nothing worked.
Please help.
Edited: By the way, my template looks like this:
<div class="career-quiz-wrapper">
<!-- ko if: quizQuestions -->
<form class="career-quiz-form" data-bind="foreach: quizQuestions">
<div class="quiz-card" data-bind="attr: {'data-question-uuid': uuid, 'data-index': index }, css: index == 0 ? 'show' : 'hide'">
<h2 class="display-heading title">How important is it to you to...</h2>
<div class="lead main-text" data-bind="html: question"></div>
<div class="choices">
<div class="row-bar">
<input type="range" data-anchor="range" class="custom-range" min="0" max="100" value="50" autocomplete="off" data-bind="event: { change: $parent.adjustRangeSlider }">
</div>
<div class="row-options">
<div class="option-section" data-bind="foreach: choiceUUIDs">
<div class="choice-option-button">
<a class="option-button" data-bind="click: $parents[1].choiceClicked, attr: { 'data-choice-uuid': UUID, 'data-range-value': rangeValue, title: textOption }, text: textOption, css: (i && i == 2) ? 'selected' : ''"></a>
</div>
</div>
<div class="mobile-bar">
<input type="range" data-anchor="range" class="custom-range" min="0" max="100" value="50" autocomplete="off" data-bind="event: { change: $parent.adjustRangeSlider }">
</div>
</div>
</div>
<div class="choice-buttons">
<div class="choice-button">
<a data-bind="click: $parent.showCareers" class="blue-link" title="Show Careers">Show Careers</a>
</div>
<!-- ko if: index == ($parent.quizQuestions().length - 1) -->
<div class="choice-button">
<a class="pink-button results-button" data-bind="click: $parent.getResults" title="Get Results">Get Results <i class="fa fa-cog fa-spin d-none"></i></a>
</div>
<!-- /ko -->
<!-- ko ifnot: index == ($parent.quizQuestions().length - 1) -->
<div class="choice-button">
<a class="pink-button next-question" data-bind="click: $parent.showNext" title="Next Question">Next Question</a>
</div>
<!-- /ko -->
</div>
<div class="quiz-progress">
<p class="progress-text" data-bind="text: $parent.progressText"></p>
</div>
</div>
</form>
<!-- /ko -->
<!-- ko ifnot: quizQuestions -->
<div class="error-message">
<p>
Sorry, something went wrong. I guess you'll have to figure out what to do on your own..
</p>
</div>
<!-- /ko -->
I have had issues with javascript object literals before and would probably approach it like this. Not sure if this works as I haven't tested it.
define([
'jquery',
'uiComponent',
'ko'
], function($, Component, ko) {
'use strict';
var self = this;
self.progressText = ko.observable(false);
function initialize() {
this._super();
self.progressText('1 of 15 questions completed');
return this;
}
function showNext() {
let dataIndex = parseInt($('.quiz-card.show').attr('data-index')) + 1;
alert(ko.isObservable(self.progressText));
alert(self.progressText());
self.progressText(dataIndex + ' of 15 questions completed');
}
return Component.extend({
defaults: {
template: 'Shmoop_Cms/career-form'
},
progressText: self.progressText,
initialize: initialize,
showNext: showNext
});
});
Related
I am new to vue, I found some examples but I could not reproduce in my situation.
I have some inputs user will fill out and once it clicks the button, the information will populate a list of items. I am trying to crete < li > with a OrderListItem component. But I am getting this error:
runtime-core.esm-bundler.js?5c40:217 Uncaught ReferenceError: machines is not defined
at eval (OrderListItem.vue?fb66:14)
Here is the form
<template>
<div>
<div class="flex flex-col mb-4 md:w-full m-1">
<label for="planter_model_id">Planter</label>
<select v-model="registration.planter_model_id" name="planter_model_id">
<option disabled selected>Planter</option>
<option v-for="planter in planters" :key="planter" :value="planter.id">{{planter.brand.name}} {{planter.name }}</option>
</select>
</div>
<div class="flex flex-col mb-4 md:w-full m-1">
<label class=" for="lines">Lines</label>
<Input v-model="registration.lines" type="number" name="lines" />
</div>
<Button type="button" #click="addItemOrder">Add</Button>
</div>
<div>
<ul>
<OrderListItem :machines="machines" />
</ul>
<div>
</template>
Here is my code
export default {
components: {
OrderListItem,
Button,
},
props: {
planters:{
type:Array,
required: true
},
},
data() {
return {
machines: [], //this what I wish to be passed to OrderListItem component
registration:{
lines:null,
planter_model_id:null,
},
}
},
methods:{
addItemOrder(){
let item = {}
item.planter_model_id = this.registration.planter_model_id
item.lines = this.registration.lines
this.machines.push(item)
}
}
};
And here is my OrderListItem component that I created on another file:
<template>
<li v-for="machine in machines" :key="machine">
<div class="flex-initial w-3/5">
<p>Planter: {{machine.planter_model_id}}</p>
<p>Lines: {{machine.lines}}</p>
</div>
</li>
</template>
<script>
export default {
name: 'OrderListItem',
props:{
machines,
}
}
</script>
I don’t know if it is relevant but I am using vue3 and laravel.
I am very newbie here and from what I learned I think if machines array was a prop I would be able to access it on my component. But I will dynamically add a and remove itens from machines array and I think props receive data from server so It should not be declared there, that why I declared inside data().
Thanks =)
You should define the prop by adding its type and default value :
export default {
name: 'OrderListItem',
props:{
machines:{type:Array,default:()=>[]},
}
}
I have a vue component with a div and a button and into another div I have two components
<script>
export default {
name: 'excursion-backend-component',
methods:{
doRedirection: function () {
window.location = APP_URL+"/excursiones/create";
}
},
mounted() {
console.log(APP_URL+"/excursiones/create");
console.log("aaaa");
}
}
</script>
<template>
<div class="container">
<h3>Adicionar excursión</h3>
<div style="text-align: right">
<a class="btn btn-primary" :href="doRedirection"><i class="fa fa-plus"></i> Adicionar</a>
</div>
<br>
<div>
<excursion-list-component></excursion-list-component>
<excursion-add-component></excursion-add-component>
</div>
</div>
</template>
But I don't see the button on the navigator.
What is wrong?
Here is how I see the page
:href="" expecting string with url to navigation, but you using method.
Use #click instead :href, if you want to use method.
<a #click="doRedirect">... </a>
Or, may be, move it to computed block
computed: {
excursionesUrl () {
return APP_URL+"/excursiones/create";
}
}
I created a simple real-time chat application using vue js in laravel.
I am having a problem with the automatic scroll of the div when there is a new data.
What I want is the div to automatically scroll down to the bottom of the div when there is a new data.
Here is my code so far.
Chat.vue file
<template>
<div class="panel-block">
<div class="chat" v-if="chats.length != 0" style="height: 400px;" id="myDiv">
<div v-for="chat in chats" style="overflow: auto;" >
<div class="chat-right" v-if="chat.user_id == userid">
{{ chat.chat }}
</div>
<div class="chat-left" v-else>
{{ chat.chat}}
</div>
</div>
</div>
<div v-else class="no-message">
<br><br><br><br><br>
There are no messages
</div>
<chat-composer v-bind:userid="userid" v-bind:chats="chats" v-bind:adminid="adminid"></chat-composer>
</div>
</template>
<script>
export default {
props: ['chats','userid','adminid'],
}
</script>
ChatComposer.vue file
<template>
<div class="panel-block field">
<div class="input-group">
<input type="text" class="form-control" v-on:keyup.enter="sendChat" v-model="chat">
<span class="input-group-btn">
<button class="btn btn-primary" type="button" v-on:click="sendChat">Send Chat</button>
</span>
</div>
</div>
</template>
<script>
export default{
props: ['chats','userid','adminid'],
data() {
return{
chat: ''
}
},
methods: {
sendChat: function(e) {
if(this.chat != ''){
var data = {
chat: this.chat,
admin_id: this.adminid,
user_id: this.userid
}
this.chat = '';
axios.post('/chat/sendChat', data).then((response) => {
this.chats.push(data)
})
this.scrollToEnd();
}
},
scrollToEnd: function() {
var container = this.$el.querySelector("#myDiv");
container.scrollTop = container.scrollHeight;
}
}
}
</script>
I am passing a div id from the Chat.vue file to the ChatComposer.vue file.
As you can see in the ChatComposer.vue file there is a function called scrollToEnd where in it gets the height of the div id from Chat.vue file.
When the sendchat function is triggered i called the scrollToEnd function.
I guess hes not getting the value from the div id because I am getting an error - Cannot read property 'scrollHeight' of null.
Any help would be appreciated.
Thanks in advance.
the scope of this.$el.querySelector will be limited to only ChatComposer.vue hence child component can not able to access div of parent component #myDiv .
You can trigger event as below in ChatComposer
this.$emit('scroll');
In parent component write ScollToEnd method and use $ref to assign new height
<chat-composer v-bind:userid="userid" v-bind:chats="chats" v-bind:adminid="adminid" #scroll="ScollToEnd"></chat-composer>
..
I am learning vue+laravel. I want to pass value from one component to other component? I have used vue router for routing.
Here is the code for first and second component.
SelectPerson.vue
<template>
......
<div>
<input type="number" class="form-control" name="numberOfPersons" placeholder="Enter number of persons here" **v-model="inputPersons"**>
<br>
**<SelectTimeSlot v-bind:numberOfPersons="inputPersons"></SelectTimeSlot>**
</div>
<div>
<button class="btn btn-default float-right mt-2" v-on:click="selectTimeSlots">Next</button>
</div>
......
</template>
<script>
import SelectTimeSlot from './SelectTimeSlot.vue'
export default{
props:['numberOfPersons'],
data(){
return{
**inputPersons:0**
}
},
methods:{
selectTimeSlots(){
this.$router.push({name:'SelectTimeSlot'});
}
}
}
</script>
second component
SelectTimeSlot.vue
<template>
<h5>Welcome, You have selected **{{numberOfPersons}}** persons.</h5>
</template>
Can anybody help me do it?
To pass data from one component to other component, you need to use props:
First component:
<second-component-name :selectedOption="selectedOption"></second-component-name>
<script>
export default {
components: {
'second-component-name': require('./secondComponent.vue'),
},
data() {
return {
selectedOption: ''
}
}
}
</script>
Second Component:
<template>
<div>
{{ selectedOption }}
</div>
</template>
<script>
export default {
props: ['selectedOption']
}
</script>
Please visit this link.
Hope this is helpful for you!
Say I have a page with this HTML.
<div class="select-all">
<input type="checkbox" name="all_select" id="all_select">
<label #click="checkchecker" for="all_select"></label>
</div>
the function checkchecker is called in my methods
checkchecker() {
this.checker = !this.checker
}
This will show or hide my div on that page like this
<div v-show="checker === true" class="select-all-holder">
<button>Select All</button>
</div>
Now if I also want to toggle another div which is inside my child
component on that page I will pass the value like this.
<div class="content-section clearfix">
<single-product :checkers="checker"></single-product> //This is calling my child component
</div>
Now in my Child component I will have a prop declared like this
checkers: {
type: String,
default: false,
},
This is how I will write my div in my child component
<div v-show="checkers === true" class="select-holder clearfix">
<input type="checkbox" class="unchecked" name="single_select" id="1">
</div>
I am trying to use a template as shown below, the outcome is a view with all elements from the template on one line, even though i am using to separate the elements. Why does this not display properly? It seems that no matter what styling i do it still ends up a single line view.
UPDATE
The culprit is the kendo style sheet - kendo.mobile.all.min.css -
So the new question for a kendo expert is why does kendo handle input fields differently when they appear in a listview via a template than when they appear outside of a template?
An input field outside of a listview template gets this class
.km-ios .km-list input:not([type="button"]):not([type="submit"]):not([type="reset"]):not([type="image"]):not([type="checkbox"]):not([type="radio"]):not(.k-input):not(.k-button), .km-ios .km-list select:not([multiple]), .km-ios .km-list .k-dropdown-wrap, .km-ios .km-list textarea
Which results in no odd styling rules :) Normal text field view
An input field inside of the template gets this class
.km-root input:not([type="button"]):not([type="submit"]):not([type="reset"]):not([type="image"]):not([type="checkbox"]):not([type="radio"]):not(.k-input):not(.k-button), .km-root select:not([multiple]), .km-root .k-dropdown, .km-root textarea
which results in these rules being applied to it (making the field sit in a wierd spot and loose all normal field stlying ie border background etc.) Im not 100% sure which wrapper is causing this
appearance: none;
-moz-appearance: none;
-webkit-appearance: none;
font-size: 1.1rem;
color: #385487;
min-width: 6em;
border: 0;
padding: .4em;
outline: 0;
background:
transparent;
My work around is to give any text fields inside listview templates the class="k-input" which obviously excludes them from the above css -
<script src="kendo/js/jquery.min.js"></script>
<script src="kendo/js/kendo.mobile.min.js"></script>
<link href="kendo/styles/kendo.mobile.all.min.css" rel="stylesheet" />
<!-- eventDetail view -------------------------------------------------------------------------------------------------->
<div data-role="view" id="view-eventDetail" data-show="getEventDetailData" data-title="eventDetail">
<header data-role="header">
<div data-role="navbar">
<span data-role="view-title"></span>
<a data-align="right" data-role="button" class="nav-button" href="#view-myEvents">Back</a>
</div>
</header>
<form id="updateEventForm">
<div id="updateEvent">
<div id="eventDetail"></div>
<p>
<input type="button" id="eventUpdateCancelButton" style="width:30%" data-role="button" data-min="true" value="Back" />
<input type="submit" id="eventUpdateSaveButton" style="width:30%" data-role="button" data-min="true" value="Save" />
</p>
<div id="eventResult"></div>
</div>
</form>
</div>
<script id="eventDetail-template" type="text/x-kendo-template">
<p>
<input name="event_type" id="event_type" data-min="true" type="text" value="#= type #" />
</p>
<p>
<input name="event_loc" id="event_loc" data-min="true" type="text" value="#= type #" />
</p>
<p>
<input name="event_date_time" id="event_date_time" data-min="true" type="datetime" value="#= stamp #" />
</p>
<p>
Share this
<input data-role="switch" id="event_share" data-min="true" checked="checked" value="#= share #"/>
</p>
<input name="userID" id="userID" type="hidden" value="#= user_id #" />
<input name="eventID" id="eventID" type="hidden" value="#= event_id #" />
</script>
<script>
function getEventDetailData(e) {
var dataSource = new kendo.data.DataSource({
transport: {
read: {
url: "http://localhost/mpt/website/api/event_details.php",
dataType: "jsonp",
type: "GET",
data: { userID: e.view.params.user_id, eventID: e.view.params.event_id },
cache: false
},
parameterMap: function(options) {
return {
userID: options.userID,
eventID: options.eventID
};
}
},
schema: { // describe the result format
data: "results" // the data which the data source will be bound to is in the "results" field
}
});
console.log(e);
$("#eventDetail").kendoMobileListView({
dataSource: dataSource,
template: kendo.template($("#eventDetail-template").html())
}).data("kendoMobileListView");
}
//update event
function sendUpdateEvent() {
var siteURI = "http://localhost/mpt/website/api/update_event.php?";
app.showLoading();
var user_id = $('#userID').val();
var event_id = $('#eventID').val();
var event_type = $('#event_type').val();
var event_loc = $('#event_loc').val();
var event_date_time = $('#event_date_time').val();
var event_share = $('#event_share').val();
var formVals = 'eventID=' + event_id + '&userID=' + user_id + '&event_type=' + event_type + '&event_loc=' + event_loc + '&event_date_time=' + event_date_time + '&event_share=' + event_share;
var fullURI = siteURI + formVals;
$.ajax({
url: fullURI, dataType: 'json', success: function (data) {
$('#eventResult').html(data.results);
app.hideLoading();
app.navigate("#view-myEvents");
}
});
}
$('#eventUpdateCancelButton').click(function () {
app.navigate("#view-myEvents");
});
$('#eventUpdateSaveButton').click(function () {
sendUpdateEvent();
});
$('#updateEventForm').submit(function () {
sendUpdateEvent();
return false;
});
</script>
ListView widgets are supposed to be applied to <ul> elements.
Try changing:
<div id="eventDetail"></div>
to:
<ul id="eventDetail"></ul>
Also with this bit of code:
$("#eventDetail").kendoMobileListView({
dataSource: dataSource,
template: kendo.template($("#eventDetail-template").html())
}).data("kendoMobileListView");
The .data() call on the end isn't doing anything here and can be removed, and also you can pass just the text string as the template. You don't need to call kendo.template() yourself. So you can change that to just:
$("#eventDetail").kendoMobileListView({
dataSource: dataSource,
template: $("#eventDetail-template").html()
});