![]() ![]() Most Rails applications should be spending thousands of dollars per month less than they are now. I can show you how to make your site faster and grow your business by at least that much and more.ĭid you know that most Rails applications I've seen in my consulting gigs have been spending more than 2x per month what they needed to? If your business is doing $1 million per year, reducing browser load times by 1 second will increase revenue by $50,000 to $100,000 per year. I've consulted for dozens of clients on making their Rails apps faster, and taught hundreds at workshops.īut I've never met a Rails application I couldn't make faster.ĭid you know that an extra second of load time reduces revenue by 5 to 10%? This result has been experimentally verified at dozens of companies large and small. Others were the passion projects of developers looking to start a side business. Many were for well-funded startups, from Ivy-League incubators like YCombinator or 500Startups. Over the past 10 years, I've seen dozens of different Rails codebases. I also maintain Puma - my code is probably already running on your servers, today. If you want to find more guides and tips for developers, as well as other interesting articles for entrepreneurs, keep browsing our blog.My name is Nate Berkopec. As we said at the beginning, this will allow you to avoid big bundled files and instead serve multiple smaller files, with the advantage of easier cache and control. We hope this guide will become a useful and handy tool whenever you want to use Import Maps to load JS libraries in your web application. In case you don't mind maintaining your libraries manually, we firmly recommend you use this second option. Pin "simplebar", to: "simplebar.js" Step 4: To pin simplebar., add the line below to config/importmap.rb: paths << ("vendor", "stylesheets") Step 3: Now, add vendor stylesheet to the assets paths, and add to config/initializers/assets.rb the line below: (Note: you may need to create vendor/stylesheet folder.) In this case, we will use simplebar for our example Step 1:įirst, download simplebar js file from: copy it to vendor/javascript/simplebar.jsĪfter this, download also css file from: copy it to vendor/stylesheets/simplebar.css. Path 2 : Download css and js files into your vendor folder. Since not all gems are updated, this means that if, for example, you are trying to use a gem for the “simplebar” library, you will find that the only gem available has no stars and is not actively maintained. However, keep in mind the words of the Immortal Bard: All that glitters is not gold. Lastly, in app/javascript/application.js:Īnd that would be all. Pin "popper", to: 'popper.js', preload: true To exemplify with a step by step guide, we will use bootstrap:Īdd boostrap to app/assets/stylesheets/application.scss: When importing these types of libraries, you can choose one of the following paths: Now let's move on to the slightly more challenging case of using Import Maps in libraries with css. As you can see, it's quite as simple as promised! For example, for chart.js you can run:Īnd that's it. bin/importmap pin that there will be some specific cases in which you will have to use a different CDN. If you want to install a library using a JSPM CDN you simply need the pin command and the library name. ![]() JSPM is used by Rails when serving JavaScript libraries in an application. JSPM -shortcut for JavaScript Package Management- is a tool that allows us to load a fully optimized NPM package inside the browser without any need for additional tooling. Let's begin by taking a look at the easier case.Īs said before, Import Maps is easy-peasy when used in libraries without css. Consider that while it works great to import js, Import Maps is not so straightforward when the library includes css code. Today we will walk you through different ways to use Import Maps, with real libraries and examples. With Import Maps, we can finally use the libraries we want without wasting time with configuration. We can still manage our JavaScript libraries, but our application will now manage multiple small ones instead of one big file. This means we can now get rid of Webpack and Node.js from our package. Import Maps is a new feature on Rails 7 that allows us to load third-party javascript libraries in a default way by simply referencing those libraries to their bare module specifiers. Again and again, devs have shown they don't shy away from undertaking radical changes to give developers better tools. One reason Rails has stood the test of time is sheer boldness. For almost 20 years now, Rails has been a synonym for effectiveness and excellent results, which is why we haven't hesitated to call it the perfect ally for startups. ![]()
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