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TIL: mounting stand-alone react client as a react_component in react-rails :rail...

 6 years ago
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#+COMMENT -*- time-stamp-line-limit: 12; time-stamp-count: 2 -*-

TIL: mounting stand-alone react client as a react_component in react-rails

  • last updated: Time-stamp: <2019-04-05 00:59:22 tamara>
  • capture date: [2019-04-05 Fri 00:40]
  • keywords: react-rails, rails, react

This should have been obvious, but for some reason seemed like it was the “wrong” way to do this.

We have a product that we’re converting slowly to react-based components. One of the central philosophies has been to build towards a standalone react client, and move the rails app to be more strictly an API provider.

I started out using the standard ReactDom style of mounting the application to the page. This has worked well so far, until we ran into a strange issue.

The library styled-components has been something we’ve adopted for putting our CSS in JS. However it has a problem: if multiple copies are loaded on the page in different bundles, it gets confused and the styles seem to go missing.

My first reaction was to remove all the styled-components and go with inline style objects instead.

However, my colleague pointed out that we could also just build one bundle which would keep the issue at bay.

I ran an experiment to do this, and it worked. The essential parts are:

  1. Create a new component, in my case I named it ReactClient , in the app/javascript/components/ directory.
    • the component essentially just imports the App and renders it.
  2. Change the layout where you’re loading the app to instead issue and ERB call to react_component that calls ReactClient , possibly adding props options and HTML options.
  3. Remove the webpacker packs the build the client.

This worked really well, with the caveat that the application bundle is rather large since it now contains everything.


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