Get server side react from webjars

[pasviegas]

I really don't know how to do that, but it seems odd to have react in two different places.

Do you have any idea on how to do that?

Thanks

[yanns]

You're right, it is not an optimal solution.
For a technical proof of concept, it is sufficient.

But for a real world application, a better solution has to be found.

What I would like to achieve:

• using the react tool from sbt-web
• using react from webjar
• managing dependencies with require.js or common.js modules + browersify

If you have any idea, please feel free to suggest them!

[pasviegas]

So, I have figured out how to read the webjar file

Assets.resourceNameAt("/" + WebJarAssetLocator.WEBJARS_PATH_PREFIX, WebJarAssets.locate("react.min.js"))
        .flatMap(AssetInfo.resource)
        .map(url => {
        new String(readStream(url.openStream()))
      })

There should be a better way, but this is actually working.

[benmccann]

@jamesward or @huntc might know if there's a better way to read a source from a webjar

[huntc]

@pasviegas If you're using sbt-web then webModules in Assets will return a Seq[File] of all libraries - including WebJars. Using this task key will eliminate the need to perform another locator lookup. sbt-web already does one for you.

[jamesward]

Are you trying to read the WebJar asset's contents in a running Play app or in an sbt plugin?

[pasviegas]

In a running play app inside a controller. The code in my previous comment actually works, but I am guessing there should a better way. :)

[jamesward]

Here is how I'd do it:

val path = new WebJarAssetLocator().getFullPath("react", "react.min.js")
val maybeReactMinJs = Play.current.resourceAsStream(path).map { resource =>
  Source.fromInputStream(resource).mkString
}

This uses webjars-locator. Here are my deps:

"org.webjars" % "webjars-locator" % "0.19",
"org.webjars" % "react" % "0.12.0"

[benmccann]

Cool. Thanks for the tips!

[pasviegas]

Thanks a lot :)

[yanns]

To resolve `var React = require('./react'), trireme needs a real file and not a stream from a jar.

I think we can work around this like I did for the public folder:
https://github.com/yanns/play-react/blob/master/project/PublicOnFileSystem.scala