I was using VueJS in browser mode and am now trying to switch my code to a VueJS SPA and vue-router. I've been stuck for hours with a $refs not working anymore.
To interact with my Google Charts, I was using an absolute reference to the graph (this.$refs.villesChart) to get selected data like that:
computed: {
eventsprox() {
let eventsprox = {
select: () => {
var selection = "";
if (this.$refs.villesChart) selection = this.$refs.villesChart1.chartObject.getSelection();
if (selection.length) {
var row = selection0[0].row + 1;
this.code_commune = this.dataprox[row][4];
this.changerville(this.code_commune, this.dataprox[row][0]);
}
return false;
},
};
return eventsprox;
}
HTML code for graph:
<GChart type="BarChart" id="villesChart" ref="villesChart" :data="dataprox" :options="optionsprox" :events="eventsprox"/>
I don't know why, but in browser mode, this.$refs.villesChart is a component:
[1]: https://i.stack.imgur.com/xJ8pV.png
but now it is a proxy object, and lost its chartObject attribute:
[2]: https://i.stack.imgur.com/JyXrL.png
I'm really confused. Do you have an idea why?
And if I use the proxy object, then I get a Vue warning "Avoid app logic that relies on enumerating keys on a component instance" and it is not working in production environment.
Thanks a lot for your help!!
After hours of testing different solutions, I finally found a solution working with Vue3 and Vue-google-chart 1.1.0.
I got rid of "refs" and put the events definition and code in the data section of my Vue 3 app (instead of computed) and accessed the chart data through a component variable I used to populate it.
Here is my event code where this.dataprox is my data table for the chart:
eventsprox: {
'click': (e) => {
const barselect = parseInt(e.targetID.split('#')[2]) + 1;
this.code_commune = this.dataprox[barselect][4];
this.nom_commune = this.dataprox[barselect][0];
this.changerville(this.code_commune, this.nom_commune);
}
},
My Gchart html code:
<GChart type="AreaChart" :data="datag" :options="optionsg" :events="eventsprox"/>
I hope it can help!
I have a utilities plugin for Nuxt.js that I created with a method to parse hashtags and mentions and replace them with <nuxt-link>. I am then using v-html to inject the converted data back into the template. My issue is that the <nuxt-link> are not being parsed with v-html.
import Vue from 'vue';
Vue.mixin({
methods: {
replaceMentions(data) {
// Tags
const tagRegEx = /\[#tag:[a-zA-Z0-9_-]*\]/g;
let tagMatch;
while ((tagMatch = tagRegEx.exec(data)) !== null) {
const tag = Array.from(tagMatch[0].matchAll(/\[#tag:(.*?)\]/g));
data = data.replace(tag[0][0], '<nuxt-link to="/search?q=' + tag[0][1] + '">#' + tag[0][1] + '</a>');
};
// Users
const userRegEx = /\[#user:[a-zA-Z0-9_-]*\]/g;
let userMatch;
while ((userMatch = userRegEx.exec(data)) !== null) {
const user = Array.from(userMatch[0].matchAll(/\[#user:(.*?)\]/g));
data = data.replace(user[0][0], '<nuxt-link to="/users/' + user[0][1] + '">#' + user[0][1] + '</>');
};
return data;
}
}
});
Does anyone have any tips for how I could make these work as proper nuxt compatible links? I already tried using <a> and it works fine, I would just prefer to utilize proper nuxt compatible links.
I think the discussion here basically answers the question: https://github.com/nuxt-community/modules/issues/185
Summarized, there are two options:
Render the HTML with a full Vue build and then attach the rendered node.
(Preferred) Find the links in the HTML and make them call router push instead of their default action.
I can't figure out how to embed a codepen using the recommended HTML method i a Vue application.
As <script> tag cannot be part of a Vue component template, I tried to add it to index.html where my Vue application is injected without luck. However, when I tried to paste the html code outside the div where Vue resides, the code got turned into an iFrame as it should.
Here is the HTML embed:
<p data-height="265" data-theme-id="0" data-slug-hash="JyxKMg" data-default-tab="js,result" data-user="sindael" data-embed-version="2" data-pen-title="Fullscreen image gallery using Wallop, Greensock and Flexbox" class="codepen">See the Pen Fullscreen image gallery using Wallop, Greensock and Flexbox by Dan (#sindael) on CodePen.</p>
And the script:
<script async src="https://static.codepen.io/assets/embed/ei.js"></script>
Embedding an iFrame directly works fine, but I wonder. Is there a way how to get the html working?
Look into the https://static.codepen.io/assets/embed/ei.js, then you will see it executes two steps:
check document.getElementsByClassName if exists, create it if not.
one IIFE to execute the embed.
So one hacky way as below simple demo:
copy the source codes from https://static.codepen.io/assets/embed/ei.js
copy the codes of first step then wrap it as one function = _codepen_selector_contructor
copy the codes of second step and remove () from the end, then wrap it as one function = _codepen_embed_method
create one vue-directive (I prefer using the directive to support the features which directly process Dom elements, you can use other solutions), then execute _codepen_selector_contructor and _codepen_embed_method
Probably you want to replace document inside _codepen_embed_method with el instead, then execute _codepen_embed_method(el). so that it will not affects other elements.
Below demo uses the hook='inserted', you could use other hooks if inserted can't meet your requirements.
let vCodePen = {}
vCodePen.install = function install (Vue) {//copy from https://static.codepen.io/assets/embed/ei.js
let _codepen_selector_contructor = function () {
document.getElementsByClassName||(document.getElementsByClassName=function(e){var n,t,r,a=document,o=[];if(a.querySelectorAll)return a.querySelectorAll("."+e);if(a.evaluate)for(t=".//*[contains(concat(' ', #class, ' '), ' "+e+" ')]",n=a.evaluate(t,a,null,0,null);r=n.iterateNext();)o.push(r);else for(n=a.getElementsByTagName("*"),t=new RegExp("(^|\\s)"+e+"(\\s|$)"),r=0;r<n.length;r++)t.test(n[r].className)&&o.push(n[r]);return o})
}
let _codepen_embed_method = //copy from https://static.codepen.io/assets/embed/ei.js then removed `()` from the end
function(){function e(){function e(){for(var e=document.getElementsByClassName("codepen"),t=e.length-1;t>-1;t--){var u=a(e[t]);if(0!==Object.keys(u).length&&(u=o(u),u.user=n(u,e[t]),r(u))){var c=i(u),l=s(u,c);f(e[t],l)}}m()}function n(e,n){if("string"==typeof e.user)return e.user;for(var t=0,r=n.children.length;t<r;t++){var a=n.children[t],o=a.href||"",i=o.match(/codepen\.(io|dev)\/(\w+)\/pen\//i);if(i)return i[2]}return"anon"}function r(e){return e["slug-hash"]}function a(e){for(var n={},t=e.attributes,r=0,a=t.length;r<a;r++){var o=t[r].name;0===o.indexOf("data-")&&(n[o.replace("data-","")]=t[r].value)}return n}function o(e){return e.href&&(e["slug-hash"]=e.href),e.type&&(e["default-tab"]=e.type),e.safe&&("true"===e.safe?e.animations="run":e.animations="stop-after-5"),e}function i(e){var n=u(e),t=e.user?e.user:"anon",r="?"+l(e),a=e.preview&&"true"===e.preview?"embed/preview":"embed",o=[n,t,a,e["slug-hash"]+r].join("/");return o.replace(/\/\//g,"//")}function u(e){return e.host?c(e.host):"file:"===document.location.protocol?"https://codepen.io":"//codepen.io"}function c(e){return e.match(/^\/\//)||!e.match(/https?:/)?document.location.protocol+"//"+e:e}function l(e){var n="";for(var t in e)""!==n&&(n+="&"),n+=t+"="+encodeURIComponent(e[t]);return n}function s(e,n){var r;e["pen-title"]?r=e["pen-title"]:(r="CodePen Embed "+t,t++);var a={id:"cp_embed_"+e["slug-hash"].replace("/","_"),src:n,scrolling:"no",frameborder:"0",height:d(e),allowTransparency:"true",allowfullscreen:"true",allowpaymentrequest:"true",name:"CodePen Embed",title:r,"class":"cp_embed_iframe "+(e["class"]?e["class"]:""),style:"width: "+p+"; overflow: hidden;"},o="<iframe ";for(var i in a)o+=i+'="'+a[i]+'" ';return o+="></iframe>"}function d(e){return e.height?e.height:300}function f(e,n){if(e.parentNode){var t=document.createElement("div");t.className="cp_embed_wrapper",t.innerHTML=n,e.parentNode.replaceChild(t,e)}else e.innerHTML=n}function m(){"function"==typeof __CodePenIFrameAddedToPage&&__CodePenIFrameAddedToPage()}var p="100%";e()}function n(e){/in/.test(document.readyState)?setTimeout("window.__cp_domReady("+e+")",9):e()}var t=1;window.__cp_domReady=n,window.__CPEmbed=e,n(function(){new __CPEmbed})}
let defaultProps = {class: 'codepen', 'data-height':265, 'data-theme-id':0, 'data-slug-hash':'', 'data-default-tab':'js,result', 'data-user':'sindael', 'data-embed-version':'2', 'data-pen-title':''}
Vue.directive('code-pen', {
inserted: function (el, binding, vnode) {
let options = Object.assign({}, defaultProps, binding.value)
Object.entries(options).forEach((item) => {
el.setAttribute(item[0], item[1])
})
setTimeout(() => {
_codepen_selector_contructor()
_codepen_embed_method() //_codepen_embed_method(el); you can pass el to take place of `document`
}, 100)
},
componentUpdated: function (el, binding, vnode) {
}
})
}
Vue.use(vCodePen)
Vue.config.productionTip = false
app = new Vue({
el: "#app",
data: {
keyword: '',
},
mounted: function () {
},
methods: {
}
})
<script src="https://unpkg.com/vue#2.5.16/dist/vue.js"></script>
<div id="app">
<p v-code-pen="{class: 'codepen', 'data-height':'265', 'data-theme-id':0, 'data-slug-hash':'JyxKMg', 'data-default-tab':'js,result', 'data-user':'sindael', 'data-embed-version':'2', 'data-pen-title':'Test'}">
</p>
</div>
Is there a command in console? Or a tell tale sign like ng directives used in angular for vue that let you know if it's used in a site or app?
The Vue dev tools uses three different approaches.
One of the approaches is this:
// Method 3: Scan all elements inside document
const all = document.querySelectorAll('*')
let el
for (let i = 0; i < all.length; i++) {
if (all[i].__vue__) {
el = all[i]
break
}
}
if (el) {
let Vue = Object.getPrototypeOf(el.__vue__).constructor
while (Vue.super) {
Vue = Vue.super
}
win.postMessage({
devtoolsEnabled: Vue.config.devtools,
vueDetected: true,
}, '*')
return
}
So. Once upon a time there were four magical creatures: asp.net mvc, require.js and angular. And one wise wizard decided to put them in the same house, and let for every single view of asp.net to have its own "code-behind" javascript file;
first he added to the _Layout.cshtml
<script data-main="/main" src="~/Scripts/require.js"></script>
and then he created main.js in the root:
require.config({
baseUrl: "/Scripts/",
paths: {
'jquery': 'jquery-1.9.1.min',
'jquery-ui': 'jquery-ui-1.10.2.custom.min',
'angular': 'angular.min',
'ng-grid': 'ng-grid-2.0.2.debug'
},
shim: {
'jquery': { exports: "$" },
'underscore': { exports: "_" },
'jquery-ui': ['jquery'],
},
});
// Standard Libs
require(['jquery','jquery-ui','underscore','angular']);
nothing fancy and magical yet. But then he created an html helper as such:
public static MvcHtmlString RequireJs(this HtmlHelper helper)
{
var controllerName = helper.ViewContext.RouteData.Values["Controller"].ToString(); // get the controllername
var viewName = Regex.Match((helper.ViewContext.View as RazorView).ViewPath, #"(?<=" + controllerName + #"\/)(.*)(?=\.cshtml)").Value; //get the ViewName - extract it from ViewPath by running regex - everything between controllerName +slash+.cshtml should be it;
// chek if file exists
var filename = helper.ViewContext.RequestContext.HttpContext.Request.MapPath("/Scripts/views/" + controllerName.ToLower() + "-" +
viewName.ToLower()+".js");
if (File.Exists(filename))
{
return helper.RequireJs(#"views/" + controllerName.ToLower() + "-" + viewName.ToLower());
}
return new MvcHtmlString("");
}
public static MvcHtmlString RequireJs(this HtmlHelper helper, string module)
{
var require = new StringBuilder();
require.AppendLine(" <script type=\"text/javascript\">");
require.AppendLine(" require(['Scripts/ngcommon'], function() {");
require.AppendLine(" require( [ \"" + module + "\"] );");
require.AppendLine(" });");
require.AppendLine(" </script>");
return new MvcHtmlString(require.ToString());
}
and then he could use it in _Layout.cshtml just like that:
#Html.RequireJs()
and if you were listening carefully to the story, you probably noticed that there was also Scripts/ngcommon.js file to manually bootstrap angular.js and have commonly used angular directives and services
require(['angular', 'jquery'], function() {
angular.module("common",[]).directive('blabla', function() {
return {
restrict: 'A',
scope: { value: "#blabla" },
link: function(scope, element, attrs) { }
}
});
//manually bootstrap it to html body
$(function(){
angular.bootstrap(document.getElementsByTagName('body'), ["common"]);
});
});
And here comes the magic: from now on if it was a javascript file in \Scripts\views named as controllerName-viewName.js as home-index.js for Home\Index.cshtml it would be automagically picked up by require.js and loaded. Beautiful isn't it?
But then the magician thought: What If I need to load something else (like ng-grid) and that something should not be injected into common angular module because not all the pages will be using it. Of course he could always manually bootstrap another module into a page element in each code-behind javascript where he needed, but he's not wise enough to find answer to the question:
Is it possible to inject some angular.js component (like ng-grid) directly into a controller, without having it as a part of the app module?
If I understand magician's idea right, then it is possible to go on by splitting your application into sub-modules being defined as a collection of components.
It will work if he sets up dependencies for main myApp module like:
var myApp = angular.module('myApp', ['Constants', 'Filters', 'Services', 'Directives', 'Controllers']);
myApp.Constants = angular.module('Constants', []);
myApp.Controllers = angular.module('Controllers', []);
myApp.Filters = angular.module('Filters', []);
myApp.Services = angular.module('Services', []);
myApp.Directives = angular.module('Directives', []);
Then each of sub-modules: Services etc. - can be extended with single component, like:
myApp.Controllers.controller('MyController', function () {});
myApp.Services.factory('myService', function () {});
myApp.Directives.directive('myDirective', function () {});
myApp.Filters.filter('myFilter', []);
myApp.Constants.constant('myConstant', []);
That way main application module is loaded with several sub-modules, but each structure is not important. It makes possible to include individual controllers, services, directives and filters on each page served from back-end - magician just needs to be sure that all needed dependencies are loaded.
DI is the magic key for having separate angular codebehind in MVC views.
You don't even need the requirejs at all, because angular is a dependency injector and module loader by nature, angular.bootstrap is the magic place to start.
So let wizard became more powerfull with the spell - $inject.
var TmplController = function($scope, $compile, $http... // any module itself
{
this.parts = ['legs','arms','head'];
$scope.dynamicPageTemplate = function($compile)
{
$compile('<div><p ng-repeat="each in parts">{{each}}</p></div>' )( $scope );
}
}
TmplController.$inject = ['$scope','$comple', '$http']; //try legs or head
refer complete annotated source of angular-scenario.js from https://github.com/angular/bower-angular-scenario, and you will find how to inject code with define manner helpers.