NextJs Script not rendering inside component - next.js

I am trying to implement Cookiebot on my NextJs Website.
The docs (Link to docs) mention to insert the script for the cookie declaration inside the HTML of the specific page, for me it is an own subpage only for the cookie declaration.
If I use the HTML element <script ... /> as mentioned in the docs, the text does not load when I switch to the page, but only after a refresh once I'm on the page.
If I use the NextJs Script component Link to docs by switching the <script ..> to and import it from next/script, the cookie declaration loads instantly as expected, but it is placed below everything else of the page, even under the footer (even though i wrap the pages inside a layout with footer).
My code for the layout looks like following:
`
function BasePage(props: IBasePageProps) {
return (
<div>
<Navbar />
<main>{props.children}</main>
<Footer />
</div>
);
}
This works for every page and everything - the pages are all between the Navbar and Footer. However if I use following code for the page of the screenshot, the <Script .../> text is loaded below the footer.
export default function CookieRichtlinie() {
return (
<>
<h1 className="pb-8 mt-2 text-3xl font-extrabold leading-8 tracking-tight text-gray-900 sm:text-4xl">
Cookie Richtlinie
</h1>
<div id="CookiePolicyText">
<Script
id="CookieDeclaration"
src="https://consent.cookiebot.com/12345/cd.js"
type="text/javascript"
async
/>
</div>
</>
);
`
After googling for two days I couldn't find any issue or thread close to this problem. Someone experienced this or know what I could try?
<Script ...> below everything else
Placed <Script ...> tag of next/script anywhere possible to get the loaded text inside the page. Expected to have the result of the script in the placed component, however it is always at the bottom of the page.

Did some global searches in Github and found an useEffect workaround, made some modifications and this worked in my case.
useEffect(() => {
const cookieBotWrapper = document.getElementById("CookiebotDeclaration")
if (cookieBotWrapper) {
const script = document.createElement("script")
script.id = "CookieDeclaration"
script.type = "text/javascript"
script.async = true
script.src = `https://consent.cookiebot.com/${process.env.NEXT_PUBLIC_COOKIEBOT_DOMAIN_GROUP_ID}/cd.js`
cookieBotWrapper.appendChild(script)
}
}, [])
return (
<main>
{process.env.NODE_ENV !== "development" && (
<div id="CookiebotDeclaration" />
)}
</main>
)

Related

My Link with href doesn't scroll even though the link changes. Nextjs

I'm working on a react with nextjs project.
I'm using Link to scroll to a specific section on the same page.
Here is one of the components that use Link:
import styles from './section1.module.scss';
import Image from 'next/image';
import Button from '#material-ui/core/Button';
import tought_process from '../../../public/thought_process.png';
import Link from 'next/link';
const Section1 = () => {
return (
<div className={styles.container}>
<div className={styles.left}>
<div className={styles.leftContainer}>
<Link href='#enews'>
<div className={styles.buttonContainer}>
<Button className={styles.buttonstyle1}>Get started</Button>
</div>
</Link>
</div>
</div>
<div className={styles.right}>
<Image
src={tought_process}
className={styles.imageStyle}
alt='how to think about organizing'
layout='responsive'
priority
/>
</div>
</div>
);
};
export default Section1;
And here i mark the element with the id:
<div {...handlers} className={styles.bigBody}>
<NavBar open={menuOpen} toggle={setMenuOpen} scrollY={scrollY} />
<SideMenu open={menuOpen} toggle={setMenuOpen} scrollY={scrollY} />
<div className={styles.sections}>
<Section1 />
<Section2 />
<Section3 id='enews' />
<Section4 />
</div>
Can't figure out what i'm doing wrong.
Multiple clickable elements are wrapping each other. Remove the button and add the anchor element.
<Link href="#enews">
<a>Get started</a>
</Link>
<Link href="#enews">
<a className={styles.buttonContainer}>
<span className={styles.buttonstyle1}>Get started</span>
</a>
</Link>
I'd recommend updating the styles so you can remove the inner span element.
I use a custom link component that does a few things (not shown); one is smooth scroll to hash routes if the browser supports smooth scrolling (not Safari).
import NextLink, { LinkProps } from "next/link";
import { HTMLProps, MouseEvent, FC } from "react";
export const Link: FC<LinkProps & HTMLProps<HTMLAnchorElement>> = ({ as, children, href, replace, scroll, shallow, passHref, ...rest}) => {
const onClick = (event: MouseEvent<HTMLAnchorElement>) => {
if (href.startsWith("#")) {
event.preventDefault();
const destination = document.getElementById(href.substring(1));
if (destination) destination.scrollIntoView({ behavior: "smooth" });
}
};
return (
<NextLink as={as} href={href} passHref={passHref} replace={replace} scroll={scroll} shallow={shallow}>
<a href={href} {...rest} onClick={onClick}>
{children}
</a>
</NextLink>
);
};
I removed new lines to condense the code block
If you went with the above approach, don't include the anchor tag since it's automatically included.
import { Link } from "./custom/path/link"
<Link href="#enews">Get started</Link>
Two points here:
As per the nextjs, passHref has to be used if a custom element is used as a child of Link tag instead of an anchor tag.
As per the same docs value of href should be '/#enews' not '#enews'

Nextjs Image component wont load my images

Nextjs Image component wont load my images, I've tried everything I've come across still nothing.
<div>
{output?.map((item) => (
<div>
{console.log(`${apiUrl}${item.localImage}`)}
<Image
loader={(item) => {
return `${apiUrl}${item.localImage}`;
}}
alt={item.title}
src={`${apiUrl}${item.localImage}`}
layout="fill"
objectFit="contain"
// height={98}
// width={77}
/>
</div>
))}
</div>
The console.log shows the correct image location.
http://localhost:3030/images/b/Painting-with-Both-Hands--Sophie-Walbeoffe.jpg
http://localhost:3030/images/b/DK-The-History-Book.jpg
http://localhost:3030/images/b/Cradle-to-Cradle--(Patterns-of-Life).jpg
http://localhost:3030/images/b/Upstarts.jpg
I have added localhost to next.config.js with the port and without. I think its something to do with the loader.
So what is missing?
I think you can change the code for the loader to:
loader={() => {
return `${apiUrl}${item.localImage}`;
}}

react-helmet changing css in the head tag during runtime has lag (no css for 1 sec before it shows updated css)

This is a simplified React component that uses helmet to update the link css on runtime:
function App() {
const [brand, setBrand] = useState('nike')
return (
<div className="App">
<Helmet>
<link rel="stylesheet" href={getBrandStyle(brand)} />
</Helmet>
<div>other contents here</div>
<!-- omitted the button components that change the brand state by calling setBrand -->
</div>
);
}
I have recently just used react-helmet as a declarative way to change the head tag's child and with the code I wrote above, when switching the css there is momentary lag when the page has no css stylings and then 1 second later the updated css shows up.
Even during the initial load of the page, if I use queryParameters (code above doesn't show the query parameter approach) such as
https://localhost:3000?brandQueryParam=nike
there is 1 second wherein there is no css styling before the brand css shows up.
Can you please let me know what I am missing and how to resolve this?
This is the solution that I came up with, not sure if setTimeout is the best solution so if anyone else knows a better way, please share it.
const brands = {
nike: 'nike2022',
adidas: 'adidas2017',
fila: 'fila2020'
};
function App() {
const [brand, setBrand] = useState('nike')
const [isLoading, setIsLoading] = useState(false)
const changeBrandStyleOnClick = (brand) => {
setBrand(brand)
setIsLoading(true)
}
return (
<div className="App">
<Helmet>
<link rel="stylesheet"
onChangeClientState={(newState, addedTags, removedTags) => setTimeout(() => setIsLoading(false), 1500)}
href={getBrandStyle(brand)} />
</Helmet>
{isLoading && (
<Overlay>
<Spinner/>
</Overlay>
)}
{!isLoading && (
<>
{Object.keys(brands).filter(b => b !== brand).map(b =>
(<Button onClick={() => changeBrandStyleOnClick (b)} value={b}>
<Logo
alt="default alt name"
appearance="default"
name={b}
size="small"/>
</Button>))
}
<div>other contents here</div>
</>
)}
</div>
);
}

how to fix nextjs prerender error - vercel deployment?

How do I troubleshoot this problem this deployment issue? I am following this tutorial. My node_modules and .next are ignored and not pushed to github. It works locally but can't seem to deploy. I have supplied both the component code as well as the page it's exported on. Let me know if you can see what I am missing.
https://www.youtube.com/watch?v=V4SVNleMitE
deployment errors
Error occurred prerendering page "/components/BlogPosts". Read more: https://nextjs.org/docs/messages/prerender-error
TypeError: Cannot read property 'fields' of undefined
at BlogPosts (/vercel/path0/.next/server/chunks/130.js:39:12)
at d (/vercel/path0/node_modules/react-dom/cjs/react-dom-server.node.production.min.js:33:498)
at bb (/vercel/path0/node_modules/react-dom/cjs/react-dom-server.node.production.min.js:36:16)
at a.b.render (/vercel/path0/node_modules/react-dom/cjs/react-dom-server.node.production.min.js:42:43)
at a.b.read (/vercel/path0/node_modules/react-dom/cjs/react-dom-server.node.production.min.js:41:83)
at Object.exports.renderToString (/vercel/path0/node_modules/react-dom/cjs/react-dom-server.node.production.min.js:52:138)
at Object.renderPage (/vercel/path0/node_modules/next/dist/server/render.js:673:46)
at Object.defaultGetInitialProps (/vercel/path0/node_modules/next/dist/server/render.js:315:51)
at Function.getInitialProps (/vercel/path0/.next/server/pages/_document.js:645:16)
at Object.loadGetInitialProps (/vercel/path0/node_modules/next/dist/shared/lib/utils.js:69:29)
component blog posts
export default function BlogPosts({post }) {
const {title, information,slug , thumbnail} = post.fields
return (
<div>
<div className='container w-50 h-25 mt-4'>
<Image
className='nav'
src={'https:' + thumbnail.fields.file.url}
width={thumbnail.fields.file.details.image.width}
height={thumbnail.fields.file.details.image.height}
/>
</div>
<div>
<div>
<h4 className=''>{title}</h4>
<Link href={'/contentslug/' + slug}>
<a className='btn btn-primary text-white'>Read more</a>
</Link>
</div>
</div>
</div>
)
}
Pages/Posts
import {createClient} from 'contentful'
import BlogPosts from './components/BlogPosts'
import Nav from './components/Nav'
import Logo from './components/Logo'
export async function getStaticProps() {
const client = createClient({
space: process.env.NEXT_PUBLIC_CONTENTFUL_ID,
accessToken: process.env.NEXT_PUBLIC_CONTENTFUL_TOKEN,
})
const res = await client.getEntries({content_type: 'posts'})
return {
props: {
posts: res.items ,
revalidate: 1
}
}
}
export default function Home({posts}) {
console.log(posts);
return (
<div>
<Logo/>
<Nav/>
<div className="container text-center display-5">
{posts.map(post => (
<BlogPosts key={post.sys.id} post={post}/>
))}
</div>
</div>
)
}
You have fields of undefined. this might be caused because of some strange deploying behavior if you are 100% sure your code works.
How to fix (probably):
Build your project locally. if it works, follow the next step
Comment your code in BlogPosts, inside the exported component. The code must work, so your exported component will be empty but working.
Push this code to Vercel.
Uncommit your code. (done at point 2)
Push again.
P.S. this behavior with API is sometimes caused because of API middleware you reworked.

VueJS component won't render on front end (possibly Drupal issue)

The site I'm currently working on is built in Drupal 7. I have one form that requires user input so I'm attempting to build it with VueJS. The form is contained all within one template file (.tpl.php) and all the content is provided in this template file or via the VueJS Javascript (nothing is coming from the CMS).
The issue I have is that the Vue components are not rendering on the front-end, but when I copy the code into a JSFiddle they do, so I'm guessing it is an issue with the interaction between VueJS and Drupal. Here is a screenshot of my markup when inspecting...
Here is the code from the .tpl.php file...
<div id="app">
<form>
<div>
<label for="year">Per Year</label>
<input type="radio" name="frequency" id="year" value="year" v-model="frequency" checked>
<label for="month">Per Month</label>
<input type="radio" name="frequency" id="month" value="month" v-model="frequency">
</div>
</form>
<ul class="plans">
<template id="plan-component">
<h2 class="plan-name">{{ name }}</h2>
<h2 class="plan-cost">{{ price }}</h2>
<h2 class="plan-tagline">{{ tagline }}</h2>
Choose this plan
</template>
<li>
<plan-component :frequency="frequency"
name="Basic"
tagline="Basic tagline"
price-yearly="Free"
price-monthly="Free"
></plan-component>
</li>
<li>
<plan-component :frequency="frequency"
name="Rec"
tagline="Rec tagline"
price-yearly="3"
price-monthly="4"
></plan-component>
</li>
<li>
<plan-component :frequency="frequency"
name="Team"
tagline="Team tagline"
price-yearly="4"
price-monthly="5"
></plan-component>
</li>
<li>
<plan-component :frequency="frequency"
name="Club"
tagline="Club tagline"
price-yearly="5"
price-monthly="6"
></plan-component>
</li>
</ul>
</div>
..and the code from my JS file...
Vue.component('plan-component', {
template: '#plan-component',
props: ['frequency', 'name', 'tagline', 'priceYearly', 'priceMonthly'],
computed: {
'price': function() {
if (this.frequency === 'year') {
return this.priceYearly;
} else {
return this.priceMonthly;
}
}
},
methods: {
makeActivePlan() {
// We dispatch an event setting this to become the active plan
this.$dispatch('set-active-plan', this);
}
}
});
new Vue({
el: '#app',
data: {
frequency: 'year',
activePlan: {name: 'no', price: 'You must select a plan!' }
},
events: {
'set-active-plan': function(plan) {
this.activePlan = plan;
}
},
});
And here is the JSFiddle which outputs the components correctly - https://jsfiddle.net/2xgrpLm6/
What browser are you using? <template> tags are not supported in IE.
Another idea is to make sure you are never using fragment components (meaning wrap everything inside your template with a div like so:
<template id="foobar">
<div>
CONTENT HERE
</div>
</template>
Lastly, have you turned on Vue debug mode? Before you instantiate your Vue instance, set Vue.config.debug = true and see if you get console errors then.
Try moving the <template id="plan-component">...</template> code outside of the Vue instance. I.e., such that it is not contained within <div id="app">...</div>.
This has solved a similar problem for me in the past, though I'm not sure if it applies here.
For anyone having a similar issue, the solution was simple. After Jeff suggested turning on Vue debug mode (and downloading the Dev version of Vue JS instead of minified - https://vuejs.org/guide/installation.html) the console gave the error [Vue warn]: Cannot find element: #app.
The issue was that Drupal was loading my scripts in the <head>, before <div id="app"> was loaded in the DOM. As such #app couldn't be found. After outputting the scripts before the closing <body> tag all was sorted. See here for more information [Vue warn]: Cannot find element

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