I setup react project by create-react-app and I found that the subfolder of react won't able to autoload when I create a new file, eg
<!-- file: /public/subfolder/index.html -->
<p>subfolder content here</p>
anyone knows how? According to the official react doc, it looks like react doesn't allow this kind pattern? Anyone knows more content?
This is not actually a restriction from React itself. That was how Webpack has configured in create-react-app. Please look at the below code snippet of a typical Webpack config file in a React application. If we need more custom configuration, we have to manually configure Webpack and Babel as per our requirements.
Link for the documentation: The best webpack configurations for React applications
Related
I am new to Electron, and I have been having some trouble trying to do something simple in an Electron + React application. All I want to do is: Load a 3D model (.glb) located in my src/assets directory from a React component. I created the project using this guide. In a typical React project, I can just import the file directly in my JS module and reference the path in my code. However, with the default Webpack config, the file can't be found. There's obviously a gap in my understanding on how React + Webpack work when loading assets. What am I missing? Any help is greatly appreciated.
Thanks!
Turns out, the Webpack documentation spells out the answer clearly. Who knew? I found a lot of similar questions/answers for older versions of Webpack, so I'll post one here for Webpack 5. It requires a trivial two-line addition to the webpack.rules.js file:
{
test: /\.(png|jpg|gif|svg|glb)$/,
type: 'asset/resource'
}
The key is the asset/resource line. It's new to Webpack 5 and allows the bundling of assets without needing any additional loaders. With that, assets can be included as Javascript modules and Webpack will take care of the rest.
So, one can do:
import modelSrc from "../assets/some_awesome_model.glb";
And that's that. Webpack will spit out a URL such as /9feee593dc369764dd8c.glb, meaning Webpack has located and processed the asset.
I'm looking to embed my react application into an existing plain html / javascript website. What I've found so far is that you are only able to embed individual components into existing websites, not entire react applications.
Naturally I have an app component which contains the entire application. Am I able to embed the full application by embedding this component? My concern is all the modules I'm using (e.g. axios, bootstrap) will break.
I've been looking for a good tutorial on how to do this but I'm not finding many examples of trying to embed the entire application into an existing page.
My understanding of how to do this, is to reference the react javascript source links in the html page head, possibly also babel although its unclear to me if babel will work. Then we can use the renderDom method like we normally would.
On page load can I run my index.js file to insert my react app component into the dom? If this would work, are there any issues with file structure, file updates I would need to take care of?
If I'm driving off path out into the wilderness and there is a better way to handle it I'm open to suggestions. I'm just looking to see if someone else has experience doing this before I start down a bad path.
I was able to embed my full react application by doing the following...
I built my react app production files with npm run build
I copied those files into the existing web project at the root level
Then I opened the index.html file generated from npm run build and copied the scripts in the head and body sections to the page I wanted to drop in my application
Finally I added a div with the id root (this is what my renderDOM method is looking for) where I wanted my application to appear on the existing web page.
That was it. Super easy, thanks for the help!
Just wanted to add a quick additional approach here.
If you already have a Flask app and you're trying to put React components or an app (so the base component of an app) onto an existing HTML page in the Flask app, basically the only thing that you need is Babel, unless you are able to write React components without using JSX (so in plain Javascript) in which case you'd need nothing.
Step 1: To attach Babel to your project, you'll have to grab the Babel node modules which means your project will be associated with NPM for the sole purpose of using the Babel functions. You can do this by running the following commands in your project root directory (Node.js must be installed):
npm init -y
npm install babel-cli#6 babel-preset-react-app#3
Step 2: Once Babel is attached to your project, you'll have to actually transpile the existing React component .js files from JSX into plain Javascript like so:
npx babel --watch (jsdirectory) --out-dir (outputdirectory) --presets react-app/prod
where (jsdirectory) is the path to the directory where your React component files written using JSX are, and (outputdirectory) is where you want your translated files to show up--use . for (outputdirectory) to have transpiled files appear in your root directory.
Step 3: After the plain Javascript versions of your React files appear, make sure they are linked to your HTML page instead of the original JSX-utilizing files (replace the original script tag's .js file)
Step 4: Make sure the HTML page in question is linked to the .CSS files you want (they will modify the transpiled Javascript in the same manner as they did the JSX files in a project made using Create-React-App because the class names are the same) as well as the required React resources:
<script src="https://unpkg.com/react#16/umd/react.production.min.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.production.min.js" crossorigin></script>
After you do those quick steps your React components should render no problem on that page in your Python-Flask application.
I was wondering before starting to do it, if is posible to create a react proyect(i need to do a forum widget) code it on react and the compile it and put the .js output file in other proyect, not with react the other proyects uses php symphony and twig, would be as easy as importing the script and adding a ?
Yes it can be done. The bundle of a react app is a complete js with everything that you need to run it. At the end you only import one js file in your html. I recommend you use a bundler library like webpack or browserify to generate a minified bundle and apply other functionality before creating the final bundle.
I have an ejected React app that is based on Create-React-App, and I am trying to install the #salesforce/design-system-react package to use the Salesforce lightning components in it. But to use this package is not as easy (seems that I need some extra configuration for Barbel and Webpeck). I don't have much experience on config Barbel and Webpeck and need some help to get me started.
Can someone please let me know how can I get that .BABELRC and the Webpack v1 files described from this site: https://react.lightningdesignsystem.com/getting-started/ ?
Many thanks,
No need to configure anything. Just import the CSS.
In your index.js, add the following line.
import "#salesforce-ux/design-system/assets/styles/salesforce-lightning-design-system.min.css";
Now you should remove the styling in App.css since the default styling in Create React App will affect your Lightning Components (font-size for example)
I am very new to react and drupal 8. I know to create custom modules in drupal and react SPAs, but I m not able to call my react app using a drupal8 controller .
Can someone please make me clear of the flow and the correct way to integrate react app in drupal 8?
So there isn't really a good means of calling a React application from within the regular Drupal controller layer or in the twig templates of Drupal 8.
There are two ways people usually connect a React Application to D8.
Option 1 - Progressively decoupled sites - This is where Drupal still uses the TWIG engine to generate the vast majority of the site views, and can use React for some small part of the site while communicating with Drupal through a Drupal based webservice. Check out this project for more information - https://www.drupal.org/project/pdb. This is a nice option if you just want to add a small React based widget, but want to keep the bulk of your site in using standard TWIG.
Option 2 - Fully decouples sites - This is where you render 100% of your applications view layer using React, and just use Drupal as a CMS that provides a web service. There are multiple options for the webservice portion including https://www.drupal.org/project/graphql and https://www.drupal.org/docs/8/api/restful-web-services-api/restful-web-services-api-overview. So an example of this would be serving a create-react-app on a static server and communication with D8 through a web service.
Here is some additional information that might help guide your decision.
https://dri.es/how-to-decouple-drupal-in-2018
Best of luck!
Long post with some assumptions(but it works):
I was seeking to achieve the same (Drupal 8 and react decoupled block), and I searched and searched, I found myself returning to this page more than once, so I will leave the little thing I discovered here.
My Assumptions:
you have created a custom block that has it's own twig template.
you have defined your libraries in your libraries file (we will review this)
you have created your react app in the root folder of your module with npx create-react-app my-app.
create-react-app my-app creates a react app inside my-app folder, my-app contains all the react code and configs. To get our app(custom react js library) to play well with drupal we will need to override somethings, like scripts to rename our files (build command),to something drupal can identify(recognize) and load.
Run yarn add react-app-rewired --dev, to download react app rewire, that let's us override the default react-app configs without having to eject our app.
In the root of your react-app folder, create a file named config-overrides.js that should contain the below code
module.exports = function override(config, env) {
config.optimization.runtimeChunk = false;
config.optimization.splitChunks = {
cacheGroups: {
default: false
}
};
return config;
};
and edit the scripts in in the package.json to
"build": "react-app-rewired build && yarn run build:dist",
"build:dist": "cd build && copy static\\js\\*.js main.js && copy static\\css\\*.css main.css",
NB: I have edited the build command and added the build:dist script (however if not on windows please
replace copy with cp and \\ with / in the build:dist). This will make sure every time you run the build script, your build files will be renamed to main.js and main.css without the filename..js/css which we can then reference in our libraries.yml file.
my modulename.libraries.yml looks like this (filename = modern_js_drupal.libraries.yml)
react_local:
version: 1.x
js:
my-app/build/main.js: {}
css:
layout:
my-app/build/main.css: {}
and my block.html.twig
<div class="row">
<div id="root">
<h4>React App</h4>
</div>
{{ attach_library('modern_js_drupal/react_local') }}
The reason I named my div 'root' and not anything else if because react app uses the same id when rendering your app.
Look into react_js/public/index.html and react_js/src/index.js. index.html provides the div to hook our app into and index.js renders the app on the div provided ( ReactDOM.render(<App />, document.getElementById('root'));), The advantage of this during development is, you get to create your app and view the changes instantly on your app (http://localhost:3000/) and you can later run yarn build to view the most recent changes on your drupal 8 site.