I'd like to add the canonical URL to each page in my Nuxt3 application.
In Nuxt2 one would do:
// ~/layouts/default.vue
export default {
head() {
return {
link: [
{
rel: 'canonical',
href: 'https://example.com' + this.$route.path
}
]
}
}
}
In Nuxt3 I tried to use:
// ~/layouts/default.vue
<script setup>
const route = useRoute()
useHead({
link: [
{
rel: 'canonical',
href: 'https://example.com' + route.path,
},
],
})
</script>
However, this is not updated when navigating. How to make this reactive?
Argument has to be turned into a function:
// ~/layouts/default.vue
<script setup>
const route = useRoute()
useHead(() => ({
link: [
{
rel: 'canonical',
href: 'https://example.com' + route.path,
},
],
}))
</script>
Related
Is it possible to load the template from server (include components) dynamically? Or can I change the template before it rendered?
I would like to let user to store their own form template into a database and generate the form according to the template-id.
I tried to change the this.$options.template, but it seems like only work for vue2.
<!-- static/myproj/js/my-field.vue -->
<template>
<label :for="name+'Fld'" v-html="title"></label>
<input :name="name" :type="text" :value="value" :id="name+'Fld'"/>
</template>
<script>
export default{
props: {
name: {type:String, required:true},
value: {type:String, required:false, default:''},
type: {type:String, required:true},
title: {type:String, required:false, default:'Field: '},
},
data: function(){ return {}; },
}
</script>
// index.vue
const loadVueModuleOpts= {
moduleCache: {vue: Vue},
async getFile(url) {
const res = await fetch(url);
if ( !res.ok )
throw Object.assign(new Error(res.statusText + ' ' + url), { res });
return {
getContentData: asBinary => asBinary ? res.arrayBuffer() : res.text(),
}
},
};
export default{
props: {
id: {required:true, type:String, default:'abcdefg'},
},
data: function(){
this.loadSource();
return {
source: null,
target: null,
};
},
template: '<div>I\'m here to be replaced.</div>',
created: async function(){
this.$options.template=await axios.get(`/api/template/${id}`).then(resp=>resp.data);
},
components: {
'my-field': Vue.defineAsyncComponent( ()=>loadModule('/static/myproj/js/my-field.vue', loadVueModuleOpts)),
}
<!-- server response for /api/template/abcdefg -->
<form action="POST">
<my-field name="name" title="Your Name: " type="text"/>
<my-field name="email" title="Email: " type="email"/>
<input type="submit"/><input type="reset"/>
</form>
Thanks.
Finally, I got the solution. According to Vue3: How to use Vue.compile in Vue3, we can render the template directly by Vue3 like this:
// index.vue
import { h, compile } from 'vue';
const loadVueModuleOpts= {
moduleCache: {vue: Vue},
async getFile(url) {
const res = await fetch(url);
if ( !res.ok )
throw Object.assign(new Error(res.statusText + ' ' + url), { res });
return {
getContentData: asBinary => asBinary ? res.arrayBuffer() : res.text(),
}
},
};
export default{
props: {
id: {required:true, type:String, default:'abcdefg'},
},
data: function(){
this.loadSource();
return {
source: null,
target: null,
};
},
// Magic here
render: function(){
if(this.target)
return h(compile(this.target).bind(this));
return h('div', 'Loading...');
},
created: async function(){
this.$options.template=await axios.get(`/api/template/${id}`).then(resp=>resp.data);
},
components: {
'my-field': Vue.defineAsyncComponent( ()=>loadModule('/static/myproj/js/my-field.vue', loadVueModuleOpts)),
},
}
In the following example, {{test}} doesn't get updated according to the input of the component. What am I doing wrong?
<html>
<body>
<Component v-model="test"></Component>
{{test}}
<script type="module">
import {createApp} from './node_modules/vue/dist/vue.esm-browser.prod.js';
const Component = {
props: {
modelValue: String,
},
emits: [
'update:modelValue',
],
template: `<input #keyup="updateValue">`,
methods: {
updateValue(event) {
this.$emit('update:modelValue', event.target.value);
},
},
};
const app = createApp({});
app.component('Component', Component);
app.mount('body');
</script>
</body>
</html>
You forget to declare test variable in data options.
const app = createApp({
data: () => {
return {
test: ''
}
}
});
I am using Vue3 and have my Router setup for detail pages. Any title returns the same data and 404 is being ignored even after adding the regEx inside the routes.
Routes:
import { createRouter, createWebHistory, RouteRecordRaw } from "vue-router";
import HomeView from "../views/HomeView.vue";
import ErrorView from "../views/ErrorView.vue";
const routes: Array<RouteRecordRaw> = [
{
path: "/",
name: "home",
component: HomeView,
},
{
path: "/about",
name: "about",
// route level code-splitting
// this generates a separate chunk (about.[hash].js) for this route
// which is lazy-loaded when the route is visited.
component: () =>
import(/* webpackChunkName: "about" */ "../views/AboutView.vue"),
},
{
path: "/article/:slug",
name: "article",
component: () =>
import(/* webpackChunkName: "article" */ "../views/ArticleView.vue"),
},
{
path: "/404",
name: "PageNotExist",
component: () => import("../views/ErrorView.vue"),
},
{
path: "/:catchAll(.*)", // Unrecognized path automatically matches 404
redirect: "/404",
},
];
const router = createRouter({
history: createWebHistory(process.env.BASE_URL),
routes,
});
export default router;
Article:
<template>
<div>
<h1>{{ data.title }}</h1>
<h3>{{ data.textarea }}</h3>
</div>
</template>
<script lang="ts">
import { useSanityFetcher } from "vue-sanity";
import { defineComponent } from "vue";
export default defineComponent({
name: "ArticleView",
setup: () => {
const articleQuery = `*[_type == "article"][0] {
title,
textarea,
}`;
const options = {
listen: true,
clientOnly: true,
};
const { data } = useSanityFetcher<object>(articleQuery, options);
return { data };
},
});
</script>
I am getting the image location from firestore and would like to show the image using v-bind:src. You can find my code below:
<b-avatar v-bind:src = "profilepic" class="mr-5" size="8em"></b-avatar>
my methods can be found below:
export default {
data() {
return {
uid: "",
profilepic: "",
}
},
methods: {
getprofilepic() {
fb.storage().ref('users/' + this.uid + '/profile.jpg').getDownloadURL().then(imgURL => {
this.profilepic = imgURL;
alert(this.profilepic); // shows the correct path
})
},
}
created() {
this.uid = fb.auth().currentUser.uid;
this.getprofilepic();
}
}
I am confident that this.profilepic is storing the correct path as if i were to manually type in the path, it will show. I am suspecting that the page loaded before path could be retrieve from firestore. How can i work around this? Thank you in advance.
I have tried hardcoding the path directly to the data and it works fine. The code can be found below:
data() {
return {
uid: "",
profilepic: "*my firebase storage path*",
}
},
With that im not really sure why isnt it still showing
In the script below the template tags, you need to make sure to include the image, and of course, instead of putting my path, put your image's path!
<script>
export default {
data() {
return {
files: {
my_pic: require('/src/assets/img/avatars/logo.png')
}
};
},
}
};
</script>
Then in your and where you want to put your image, you need to put it in this format
<img :src="files.my_pic">
Let me know if this helps or if you want me to expand more.
Try waiting for the uuid to get retrieved:
<template>
<img height="200" v-bind:src = "profilepic" />
</template>
<script>
export default {
data() {
return {
uuid: undefined,
profilepic: undefined
}
},
methods: {
getprofilepic() {
fb.storage().ref('users/' + this.uid + '/profile.jpg').getDownloadURL()
.then(imgURL => {
this.profilepic = imgURL;
})
},
getuuid(){
return new Promise((resolve, reject) => {
var user = fb.auth().currentUser;
if(user == null) reject()
if (user) resolve(user.uid)
})
}
},
created() {
this.getuuid()
.then(uuid => this.uuid = uuid)
.then(() => {
this.getprofilepic();
})
}
};
</script>
As you can see in this example, it does not matter how long it takes for the URL to load: Vue SFC Playground
When Vue Loader compiles the <template> blocks in SFCs, it also converts any encountered asset URLs into webpack module requests.
For example, the following template snippet:
<img src="../image.png">
will be compiled into:
createElement('img', {
attrs: {
src: require('../image.png') // this is now a module request
}
})
By default the following tag/attribute combinations are transformed, and can be configured using the transformAssetUrls option.
{
video: ['src', 'poster'],
source: 'src',
img: 'src',
image: ['xlink:href', 'href'],
use: ['xlink:href', 'href']
}
Step 1: Create vue.config.js
module.exports = {
productionSourceMap: false,
chainWebpack: config => {
config.module
.rule('vue')
.use('vue-loader')
.loader('vue-loader')
.tap(options => {
options['transformAssetUrls'] = {
video: ['src', 'poster'],
source: 'src',
img: 'src',
image: 'xlink:href',
'b-avatar': 'src',
'b-img': 'src',
'b-img-lazy': ['src', 'blank-src'],
'b-card': 'img-src',
'b-card-img': 'src',
'b-card-img-lazy': ['src', 'blank-src'],
'b-carousel-slide': 'img-src',
'b-embed': 'src'
}
return options
})
}
}
Step 2: Inside main.js import vue.config
import '../vue.config'
Step 3: Create your html template
<template>
<b-avatar :src="profilepic" class="mr-5" size="8em"></b-avatar>
</template>
<script>
import { BAvatar } from 'bootstrap-vue'
export default {
name: 'bootstrap-image-avatar',
components: {
'b-avatar': BAvatar
},
data() {
return {
uid: "",
profilepic: "",
}
},
methods: {
getprofilepic() {
fb.storage().ref('users/' + this.uid + '/profile.jpg').getDownloadURL().then(imgURL => {
this.profilepic = imgURL;
alert(this.profilepic); // shows the correct path
})
},
}
created() {
this.uid = fb.auth().currentUser.uid;
this.getprofilepic();
}
}
</script>
I'd like to build a Nuxt.js App, in this case, I'm using dynamic routes that to be generated by using config.
Well, I got an issue when I was trying to generate my web page using Nuxt & Firebase.
Here are my Nuxt Config JS code :
import * as firebase from 'firebase';
import 'firebase/auth';
import 'firebase/database';
var firebaseConfig = {
apiKey: "AIzaSyAOX6yNHPzWHWd30GnDagwlhgGv9iP8kLs",
authDomain: "musthofa-lapor.firebaseapp.com",
databaseURL: "https://musthofa-lapor.firebaseio.com",
projectId: "musthofa-lapor",
storageBucket: "musthofa-lapor.appspot.com",
messagingSenderId: "653288691711",
appId: "1:653288691711:web:e49daf72720bf99dc5f9ca",
measurementId: "G-0KW7CGZHL3"
};
var app = firebase.initializeApp(firebaseConfig);
var dbx = app.database();
export default {
mode: 'universal',
/*
** Headers of the page
*/
head: {
title: process.env.npm_package_name || '',
meta: [
{ charset: 'utf-8' },
{ name: 'viewport', content: 'width=device-width, initial-scale=1' },
{ hid: 'description', name: 'description', content: process.env.npm_package_description || '' }
],
link: [
{ rel: 'icon', type: 'image/x-icon', href: '/favicon.ico' },
],
script:[
{ src:'https://www.gstatic.com/firebasejs/7.2.3/firebase-app.js' },
{ src:'https://www.gstatic.com/firebasejs/7.2.3/firebase-auth.js' },
{ src:'https://www.gstatic.com/firebasejs/7.2.3/firebase-database.js' },
{ src:'https://www.gstatic.com/firebasejs/7.2.3/firebase-storage.js' },
]
},
/*
** Customize the progress-bar color
*/
loading: { color: '#fff' },
/*
** Global CSS
*/
css: [
],
/*
** Plugins to load before mounting the App
*/
plugins: [
],
/*
** Nuxt.js dev-modules
*/
buildModules: [
],
/*
** Nuxt.js modules
*/
modules: [
],
/*
** Build configuration
*/
build: {
/*
** You can extend webpack config here
*/
extend (config, { isDev, isClient }) {
if (isDev && isClient) {
config.module.rules.push({
enforce: 'pre',
test: /\.(js|vue)$/,
loader: 'eslint-loader',
exclude: /(node_modules)/
})
}
}
},
generate:{
routes(){
return dbx.ref('aspirasi').once("value",function(snap){
snap.forEach(function(snapshot){
var this_val = snapshot.val();
return {
route: '/admin/balas/' + this_val.id
}
})
})
}
}
}
It generated error as follows :
ERROR undefined 06:38:45
TypeError: Cannot read property '_normalized' of undefined
at normalizeLocation (/Volumes/DAKSA-HDD/PROJECTS/PRANANDA/MUSTHOFA LAPOR RAKYAT/PROJECTS/WEBSITE/MAIN/musthofa-web/node_modules/vue-router/dist/vue-router.common.js:1297:12)
at VueRouter.resolve (/Volumes/DAKSA-HDD/PROJECTS/PRANANDA/MUSTHOFA LAPOR RAKYAT/PROJECTS/WEBSITE/MAIN/musthofa-web/node_modules/vue-router/dist/vue-router.common.js:2627:18)
at st (server.js:1:31205)
at async e.default (server.js:1:32623)
Any helps will be appreciated. Thank you so much.
Best Regards
This is caused by returning null or undefined from the routes method, and indeed that is what's happening. There's 2 issues with your code:
You are not returning a value from your callback function.
Using return in a forEach does not return the value to the caller. forEach has a return type of undefined, so you should use map instead.
routes(){
return dbx.ref('aspirasi').once("value",function(snap){
return snap.map(function(snapshot){
var this_val = snapshot.val();
return {
route: '/admin/balas/' + this_val.id
}
})
})
}
Bonus: Your code could be cleaned up a lot by using ES6 syntax and async/await:
async routes() {
const snapshot = await dbx.ref("aspirasi").once("value")
return snapshot.map(snap => ({ route: "/admin/balas/" + snap.val().id }))
}