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Pass variable from within script tags to Vue instance

In my Drupal 7 site's html I have this
<script>$L = $L.wait(function() {
(function($) {
Drupal.behaviors.related_products = {
attach: function (context, settings) {
artiklar = Drupal.settings.related_products.artiklar;
console.log(artiklar);
}
};
})(jQuery);
});</script>
In the variable artiklar above I have some data that I have passed from the server side using Drupal behaviors. Now, on the client side I need to access the variable artiklar in a Vue component, like so:
Vue.component('artikel-lista', {
template:`
<ul>
<artikel v-for="artikel in artiklar">{{ artikel.title }} Pris: {{artikel.price}} <a :href="artikel.link" class="button tiny" target="_blank">Läs mer</a></artikel>
</ul>
`,
data(){
return {
artiklar: "",
};
},
mounted: function(){
this.artiklar = artiklar // how can I access the variable "artiklar" here
},
});
The data in the variable consists of an array of items, that I need in my Vue component. But how can I pass the variable from within the script tags to the Vue instance, that lives in a separate file, inserted just before the ending body tag. Anyone?

If you have data in the globally visible Drupal.settings.related_products.artiklar object then you can refer to it practically the same way in Vue.js. or if you must use this function, assign data to global scope window.*.
new Vue({
template: `<div>{{foo}} / {{bar}}</div>`,
data() {
return {
foo: Drupal.settings.related_products.artiklar,
bar: window.artiklarData
};
}
}).$mount("#app");
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">Vue App</div>
<script>
// simulate global variable
var Drupal = {
settings: {
related_products: {
artiklar: ['fus', 'ro', 'dah']
}
}
};
(function() {
window.artiklarData = Drupal.settings.related_products.artiklar;
})();
</script>
If you assign the value to Drupal.settings.related_products.artiklar after creating the Vue object, you can try to use the solutions described in the documentation, e.g.
const vm = new Vue({
template: `<div>{{foobar}}</div>`,
data() {
return {
foobar: 'Initial value'
};
}
}).$mount("#app");
setTimeout(() => {
// simulate global variable
var Drupal = {
settings: {
related_products: {
artiklar: 'Changed value'
}
}
};
(function() {
vm.foobar = Drupal.settings.related_products.artiklar;
})();
}, 2000);
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">Vue App</div>
Maybe you could use RxJS but I don't have enough knowledge to tell if it's true and give an example.

Just in case anyone else is struggling with the same thing, I post this answer to my own question (I accidentally posted the question with the wrong account). In the end it turns out that the answer from Gander was correct and that I could access the variable directly in the Vue component, w/o first stashing it an a global variable. The viewed result was kind of weird though and after some trialling I found out that I had to parse the result with JSON.parse(). This is the working code now:
Vue.component('artikel-lista', {
template:`
<ul>
<artikel v-for="artikel in artiklar">{{ artikel.title }} Pris: {{artikel.price}} <a :href="artikel.link" class="button tiny" target="_blank">Läs mer</a></artikel>
</ul>
`,
data(){
return{
artiklar:""
}
},
mounted:function(){
this.artiklar = JSON.parse(Drupal.settings.related_products.artiklar);
console.log(this.artiklar);
}
});

.Vue component not refreshing on each new message in laravel

I followed the following tutorial to create a chat application.
https://github.com/ammezie/laravel-chat
Every thing is right, messages are storing in db , showing on console in pusher desktop, all message show on page re load.
Problem is when i send a new message it not show in other user tab until i reload the page. I need to make it dynamic
following is the code for app.js where fetch function is written
created() {
this.fetchMessages();
Echo.private('chat')
.listen('MessageSent', (e) => {
this.messages.push({
message: e.message.message,
user: e.user
});
});
},
methods: {
fetchMessages() {
axios.get('/messages').then(response => {
this.messages = response.data;
});
},
addMessage(message) {
this.messages.push(message);
axios.post('/messages', message).then(response => {});
}
here
Following is chat view code of component
<template>
<ul class="chat">
<li class="left clearfix" v-for="message in messages">
<div class="chat-body clearfix">
<div class="header">
<strong class="primary-font">
{{ message.user.name }}
</strong>
</div>
<p>
{{ message.message }}
</p>
</div>
</li>
</ul>
</template>
<script>
export default {
props: ['messages']
};
</script>
Thanks for help if some thing unclear i'll provide

You can try.
methods: {
var vm = this;
fetchMessages() {
axios.get('/messages').then(response => {
vm.messages = response.data;
});
},
addMessage(message) {
var vm = this;
vm.messages.push(message);
axios.post('/messages', message).then(response => {});
}
using this inside function causing a problem, because it refers to that particular function create a global variable with reference to this
Hope this helps.

You may want to check if there are Laravel Echo credentials for pusher correct in bootstrap.js

Vuejs not updating list but updating obect

I am learning Vuejs and I am stuck. Why can I see the messages get added to the object (in Chrome Vue debugger) yet it is not added to the div that contains the list?
My Vue Component:
<template>
<div id="round-status-message" class="round-status-message">
<div class="row">
<div class="col-xs-12" v-for="sysmessage in sysmessages" v-html="sysmessage.message"></div>
</div>
</div>
</template>
<script>
export default {
props: ['sysmessages'],
methods: {
scrollToTop () {
this.$el.scrollTop = 0
}
}
};
</script>
My Vue instance:
$(document).ready(function()
{
Vue.component('chat-system', require('../components/chat-system.vue'));
var chatSystem = new Vue({
el: '#system-chat',
data: function () {
return {
sysmessages: []
};
},
created() {
this.fetchMessages();
Echo.private(sys_channel)
.listen('SystemMessageSent', (e) => {
this.sysmessages.unshift({
sysmessage: e.message.message,
});
this.processMessage(e);
});
},
methods: {
fetchMessages() {
axios.get(sys_get_route)
.then(response => {
this.sysmessages = response.data;
});
},
processMessage(message) {
this.$nextTick(() => {
this.$refs.sysmessages.scrollToTop();
});
// updateGame();
}
}
});
});
My template call in HTML:
<div id="system-chat">
<chat-system ref="sysmessages" v-on:systemmessagesent="processMessage" :sysmessages="sysmessages" :player="{{ Auth::user() }}"></chat-system>
</div>
There are no compile or run time errors and I can see records added to the props in the vue chrome tool. I can also see empty HTML elements added to the div.
What have I missed?
UPDATE: My record structures:
response.data is an array of objects, each like this:
{"data":[
{"id":100,
"progress_id":5,
"message":"start message",
"action":"welcome"
},
{"id"....
e.message.message contains the text message entry, so just a string.
I am trying to access the message variable in each object during the fetchMessages method.

You're adding objects with sysmessage as the property.
this.sysmessages.unshift({
sysmessage: e.message.message,
});
But you are trying to view
v-for="sysmessage in sysmessages" v-html="sysmessage.message"
Based on your update, the code should be:
this.sysmessages.unshift({
message: e.message.message,
});
And you can leave the template as
v-html="sysmessage.message"

Vue Computed Property Setup Issues

I have the following JS that I'm trying to translate to Vue JS. I was told a computed property would be the way to go. I'm a little confused on computed properties still. I know how I want it to function, I want it's input to be the key of the item in the list. And I want the output to be a 'related' array that I can then loop through in sub list. If you are having trouble visualizing, please see this CodePen Any help would be awesome.
// Initialize Firebase
const db = firebase
.initializeApp({
databaseURL: "...firebaseio.com"
})
.database();
const contentRef = db.ref("a");
const relatedRef = db.ref("test");
new Vue({
el: "#app",
data: {
related: {}
},
firebase: {
content: contentRef,
related: relatedRef
},
});
var theKey = "objectb"
function getDiscoverBarContent(key, cb) {
relatedRef.child(key).on("child_added", snap => {
let relateRef = contentRef.child(snap.key);
relateRef.once("value", cb);
});
}
getDiscoverBarContent(theKey, snap => {
var snapVal = snap.val();
console.log(snapVal)
});
HTML
<div id="app">
<div>
<h2>Content</h2>
<pre><code>{{content}}</code></pre>
</div>
<div>
<h2>'Related' Content</h2>
<pre><code>{{related}}</code></pre>
</div>
<div>
<h2>'Results'</h2>
<ul>
<li v-for="thing in content">{{thing.name}}
<ul>
<li v-for="relation in related">{{relation.name}}</li>
</ul>
</li>
</ul>
</div>
</div>
EDIT: My attempt: CodePen
computed: {
relatedThings: function () {
var theKey = "objectb"
var output = []
function getDiscoverBarContent(key, cb) {
relatedRef.child(key).on("child_added", snap => {
let relateRef = contentRef.child(snap.key);
relateRef.once("value", cb);
});
}
getDiscoverBarContent(theKey, snap => {
var snapVal = snap.val();
console.log(snapVal)
var output = snapVal
});
return snapVal;
}
}
And Error:
ReferenceError: snapVal is not defined.
Please note, this is my attempt and I am not certain that it is going to work.
I should add...my JS skills are lacking. I know why this issue is happening but not sure how to fix.

Vue v-links in JSON data

I am relatively new to Vue, so forgive me if this is obvious (or obviously impossible).
I have a set of JSON data (fetched from a RESTful API via vue-resource):
{content: "This is content. <a href='/blog'> Link to blog </a>"}
Right now, the link triggers a page reload. If it were a vue-router v-link, that would not be an issue. However, this doesn't work (quotes are escaped in the data, of course):
{content: "This is content. <a v-link="{ path: '/blog' }"> Link to blog </a>"}
At this point, the template is already parsed, and Vue won't create a v-link anymore (it will just show up as a v-link in the rendered html).
My final result would ideally mean that I could include links in my CMS, either in HTML or Vue format, and have Vue route them correctly as v-links.
Is there something I can do to make Vue interpret the link in the JSON data?

I've answered the question on Vue Chat, and writing it here in case any other people facing similar problem
Simplified example on Codepen
HTML
<div id="app">
<div>
<a v-link= "{path:'/home'}">Go to home</a>
</div>
<router-view></router-view>
</div>
<template id="home">
<div>
<div>
Fetched Content:
</div>
<div>
{{{ fetchedContent }}}
</div>
</div>
</template>
<template id="route1">
<div>
Route1 view
</div>
</template>
<template id="route2">
<div>
Route2 view, this is different from Route1
</div>
</template>
javascript
function getContent (callback) {
var content = 'Click this: Go to route1 and Go to route2'
setTimeout(function () { callback(content) }, 1000)
}
var Home = Vue.component('home',{
template:'#home',
data: function () {
return {
fetchedContent: 'Loading...'
};
},
ready: function () {
var self = this
var router = this.$router
getContent( function (result) {
self.fetchedContent = result;
Vue.nextTick(function () {
var hyperLinks = self.$el.getElementsByTagName('a')
Array.prototype.forEach.call(hyperLinks, function (a) {
a.onclick = function (e) {
e.preventDefault()
router.go({ path: a.getAttribute("href") })
}
})
})
})
}
});
var Route1 = Vue.component('route1', {
template: '#route1'
});
var Route2 = Vue.component('route2', {
template: "#route2"
});
var router = new VueRouter({
hashbang:false,
history:true
});
router.map({
'/home':{
component:Home
},
'/route1':{
component:Route1
},
'/route2':{
component:Route2
}
});
router.start({
}, '#app');

I had a similar solution here: question using a custom dataset in my JSON code and a click listener to process it:
mounted() {
window.addEventListener('click', event => {
let target = event.target
if (target && target.href && target.dataset.url) {
event.preventDefault();
console.log(target.dataset.url);
const url = JSON.parse(target.dataset.url);
console.log(url.name)
this.$router.push(url.name);
}
});
},