I would like to properly render a docx file in React JS with the correct formatting, as it would appear in Word or a similar service. Currently, when displaying the text, all formatting is removed and appears as plain text. I obtain the file from the server, and process it, by:
const url = "http://localhost:8080/files/aboutme.docx";
axios.get(url, {
responseType: 'arraybuffer',
}).then(response => {
var doc = new Docxtemplater(new PizZip(response.data), {
delimiters: {
start: 'ran',
end: 'ran'
}
});
var text = doc.getFullText();
setAboutMe(text);
})
I am using the Docxtemplater and PizZip libraries.
Docxtemplater is
a library to generate docx/pptx documents from a docx/pptx template
If you need to render a docx file I think you should use react-doc-viewer. Then you could write something like:
import DocViewer from "react-doc-viewer";
function App() {
const doc = [{ uri: "http://localhost:8080/files/aboutme.docx" }];
return <DocViewer documents={doc} />;
}
Related
I'm trying to fetch the text contents of the first page of a PDF file using NPM node module 'PDF-lib'.
However when I fetch the contents and print the results, I instead get an array of data that looks something like below;
Could you please help me spot the problem?
Thanks in advance!
The results I get after printing look like this. What I want to fetch are the actual text contents of the PDF page.
PDFPage {
fontSize: 24,
fontColor: { type: 'RGB', red: 0, green: 0, blue: 0 },
lineHeight: 24,
x: 0,
y: 0,
node: PDFPageLeaf {
dict: Map(8) {
[PDFName] => [PDFName],
[PDFName] => [PDFRef],
[PDFName] => [PDFDict],
[PDFName] => [PDFArray],
[PDFName] => [PDFRef],
[PDFName] => [PDFDict],
[PDFName] => [PDFName],
[PDFName] => [PDFNumber]
},
...
...
...
The Code:
const { resolve } = require('path');
const { PDFDocument } = require('pdf-lib'); // Library for reading PDF file
const fs = require('fs');
async function readDataset() {
try {
// Get PDF Page
const content = await PDFDocument.load(fs.readFileSync(resolve(`./app/assets/pdfs/np.pdf`)));
// Get page contents
const contentPages = content.getPages();
let pageContent = contentPages[0];
// Return data found on first page
return pageContent;
}
catch (err) {
return err;
}
}
// Read data from dataset
let dataset = await readDataset();
Not generally possible at present (2021 ) with this library see current Limitations this info is also on the npm page at https://www.npmjs.com/package/pdf-lib#limitations
#1
pdf-lib can extract the content of text fields (see PDFTextField.getText), but it cannot extract plain text on a page outside of a form field. This is a difficult feature to implement, but it is within the scope of this library and may be added to pdf-lib in the future. See #93, #137, #177, #329, and #380.
For future visitors always check the link above for current status.
I built a super basic react app using the typescript version of create-react-app.
In my react app I want to display data from csv files I have added my project. Imagine a data.csv file under src.
On a button click I want to trigger a function that reads this file, uses some of the data for calculations etc and then prints the result. What's the best way to make this happen? I know how to trigger a function on button click in React but don't know what to do within that function to read the file and console log the data to start.
Important - I already have the file path and file in my project and do not need user input to find the file
I tried using things like fs within the function but those throw errors and I learnt its because they are native modules and cant be used on browser. So what can be used for browser?
fs only works on the server, not on the client. The browser doesn't have (general) access to the file system.
There are several options:
1. public folder
Put the .csv file into the public folder, then you can load it like:
function App() {
const [ text, setText ] = useState();
const load = function(){
fetch( './csvInPublicFolder.csv' )
.then( response => response.text() )
.then( responseText => {
setText( responseText );
})
};
return (
<div>
<button onClick={ load }>load</button>
<h2>text:</h2>
<pre>{ text }</pre>
</div>
);
}
2. webpack file-loader
Or, if the file has to be inside the src folder,
install: yarn add file-loader --dev
add a webpack.config.js:
module.exports = {
module: {
rules: [
{
test: /\.csv$/,
use: [
{
loader: 'file-loader',
},
],
},
],
},
};
And import the csv file like:
import csvFilePath from './csvInSrcFolder.csv';
import { useState } from 'react';
function App() {
const [ text, setText ] = useState();
const load = function(){
fetch( csvFilePath )
.then( response => response.text() )
.then( responseText => {
setText( responseText );
});
};
return (
<div>
<button onClick={ load }>load</button>
<h2>text:</h2>
<pre>{ text }</pre>
</div>
);
}
3. server
Or you can create a custom server.js and send a request to the server. On the server you have access to the file system (fs).
4. parse csv
if you don't want to parse the file content yourself, you can use an existing csv parser. Some people recommend papaparse (I don't have own experience about which ones are good)
import * as Papa from 'papaparse';
// ...
fetch( csvFilePath )
.then( response => response.text() )
.then( responseText => {
// -- parse csv
var data = Papa.parse(responseText);
console.log('data:', data);
});
I am a newbie on Svelte and in coding in general. I'd prefer to learn SvelteKit (Svelte#Next) rather than sapper since that seems to be where Svelte is heading.
For my personal project, I need to support dynamic routing based on url slugs. How do I do that in SvelteKit? For example, if I have /blog directory and need to pull content based on its "id", how would I do that?
The part that I am having difficulty with is accessing the URL slug parameter.
Thanks in advance.
you can create a file with the [brackets] : touch src/routes/blog/[slug].svelte
And paste the following code
<script>
import { page } from '$app/stores';
</script>
{$page.params.slug}
Then navigate to your app http://localhost:3000/blog/123
You should see your result
In order to create content for the http://localhost:3000/blog page, you can modify src/routes/blog/index.svelte
As of SvelteKit 1.0 the path should be a directory in brackets, e.g. for /blog/<slug> you will add the following:
src/routes/blog/[slug]
|_ +page.js
|_ +page.svelte
Then in src/routes/blog/[slug]/+page.js you can add something like
export const load = ({ params }) => {
return {
slug: params.slug
}
}
which will return it as a data property to +page.svelte, so you can write something like:
<script>
export let data;
</script>
<h1>{data.slug}</h1>
Reference: https://kit.svelte.dev/docs/routing
Caveat - the info in my reply probably may not be valid as SvelteKit matures, but from experiments I have done thus far, this works:
Parameter based routing is similar to the sveltejs/sapper-template. You should learn how Sapper does it first. Lets say I have a route blog with a single param slug (/blog/page-1 & /blog/page-2)
Create a route component in routes/blog named [slug].svelte
Copy the content from the sveltejs/sapper-template example.
Rename the preload function to load with a single parameter such as ctx
Alter the return object to append your slug property to props
export async function load(ctx) {
let slug = ctx.page.params.slug
return { props: { slug }}
}
If your blog has multiple params for the slug (/blog/2021/01/29/this-is-a-slug), you can remove [slug].svelte and create a file name [...data].svelte and change your load method to:
export async function load(ctx) {
let [year, month, day, slug] = ctx.page.params.data;
return { props: { data: { year, month, day, slug }}}
}
Don't forget to define your data property as an object. Here's a typescript example:
<script lang="ts">
export let data: { slug: string, year: number, month: number, day: number };
</script>
From there use the values as {data.slug}, etc
Happy hacking
I also had some issues with the Typescript import so here is a complete Typescript example.
Structure:
src/routes/coins/[coin_name]
|_ +page.ts
|_ +page.svelte
+page.ts:
import type { PageLoad } from './$types';
export const load: PageLoad = ({ params }) => {
return {
name: params.coin_name
}
}
export interface CoinPage{
name: string
}
+page.svelte and the use of the data:
<script lang="ts">
import type { CoinPage } from "./+page";
export let data:CoinPage;
</script>
<h1>{data.name}</h1>
I;m new to VueJS and I'm making some weird experiments. I build a backend service using python/flask and this backend provide me a string of html code with many tags inside, I want to render this inside my Vue app, I have a method for calling the backend that looks like this:
async execute (method, resource, data) {
return client({
method,
url: resource,
data: data
}).then(async req => {
return req.data.html
})
},
callBack (id) {
console.log(id)
return this.execute('post', '/content/', {body: { 'id': id }})
}
And in the .vue file I have:
export default {
data () {
return {
loading: false,
launch: [],
html: 'none',
page: this.$route.params.article
}
},
beforeMount () {
console.log('beforeee')
this.html = api.callBack(this.page)
},
methods: {
async launch () {
this.launch = ''
this.html = await api.callBack(this.page)
}
}
}
so when I call the launch function it populates this.html, and this html variable lives in a v-html.Everything seems to work i get the html and render it in de container but the links are broken, the links should point at the same app something like #/test/linkvalue, but as they are tags, and in vue you have to use they doesn't work.
There is a way to achieve this "dynamic re route" or I'm doing something too weird?
The links are plenty, since they are scraped from the web, so manually parsing is not an option.
JSFiddle
Thanks in advance for your help
Also, you shouldn't return the raw html. Just return the paths for the routes and then loop the paths and create links that way.
You can use the v-html vue directive to output raw html.
https://jsfiddle.net/eywraw8t/66262/
new Vue({
el: "#app",
data: {
rawhtml: "<h1 style='color: red;'>Hi, I am raw html.</h1>"
},
methods: {
}
})
<div id="app">
<div v-html="rawhtml"></div>
</div>
I tried a official NextJS MDX-Blog example.
https://github.com/mdx-js/mdx/tree/master/examples/next
But what I'm not able to figure out is how do I setup the NextJS config to load images via webpack?
import img from "./image.jpg"
## Hallo Blogwelt
You can also use the /public directory to hold your images. For example, if you add an image at /public/image.jpg, you can reference the image in your blog post like this:
Edit: https://nextjs.org/docs/basic-features/image-optimization#local-images
Imagine your next.config.js as something to append to an existing webpack.config behind the scenes. You won't have direct access to the webpack but you can extend it.
So in order to load images you'll need an appropriate image loader.
I found next-images easiest to use:
const withImages = require('next-images')
module.exports = withImages({
webpack(config, options) {
return config
}
})
then you can import:
import Img from "./image.jpg"
Hey thanks for the tip!
It's been a while since June and a gave it another try today and now it's working like expected from me.
I took the MDX/Next Example
Edited the next.config.js like so:
const withPlugins = require('next-compose-plugins');
const images = require('remark-images');
const emoji = require('remark-emoji');
const optimizedImages = require('next-optimized-images');
const withMDX = require('#zeit/next-mdx')({
extension: /\.mdx?$/,
options: {
mdPlugins: [images, emoji]
}
});
module.exports = withPlugins([
[
withMDX,
{
pageExtensions: ['js', 'jsx', 'md', 'mdx']
}
],
[optimizedImages]
]);
Now it works exactly like expected and in a Markdown file within the pages folder I'm able to do something like this:
import Layout from '../../components/Layout'
import Image from './catimage.jpg'
# Hey guys this is the heading of my post!
<img src={Image} alt="Image of a cat" />
Sorry I'm late, but with Next v11 you can directly import images.
That being said, you can add custom loaders for Webpack to modify your mdx files and use a custom component to process the image. e.g.:
// save this somewhere such as mdxLoader and
// add it to your webpack configuration
const replaceAll = require("string.prototype.replaceall");
module.exports = function (content, map, meta) {
return replaceAll(
map
content,
/\!\[(.*)\]\((.+)\)/g,
`<NextImage alt="$1" src={require('$2').default} />`
);
};
and process it:
// and reference this in your MDX provider
const components = {
NextImage: (props: any) => {
return <Image alt={props.alt || "Image"} {...props} />;
},
};
Now you can use markdown flavored images in your posts!
Include the ./ relative prefix, however.
I'm building a Next.js blog with MDX-Bundler. It allows you to use a remark plugin called remark-mdx-images which converts markdown flavored images into JSX images.
Below is an example configuration to get it to work
const {code} = await bundleMDX(source, {
cwd: '/posts/directory/on/disk',
xdmOptions: options => {
options.remarkPlugins = [...(options.remarkPlugins ?? []), remarkMdxImages]
return options
},
esbuildOptions: options => {
options.outdir = '/public/directory/on/disk/img'
options.loader = {
...options.loader,
'.jpg': 'file'
}
options.publicPath = '/img/'
options.write = true
return options
}
})
You can check out the following resources for detailed explanation on how to do it.
Images with MDX-Bundler
How I built the new notjust.dev platform with NextJS
If you installed the #next/mdx package you can use the <Image /> component Next.js provides:
// pages/cute-cat.mdx
import Image from "next/image";
import cuteCat from "./cute-cat.jpg";
# Cute cat
This is a picture of a cute cat
<Image src={cuteCat} />