Asset changes in subprojects

[n4cer]

Play Version

3.0.2

API

Java

Operating System

Windows 10
behavior on other OSes is unknown

JDK

openjdk version "17.0.10" 2024-01-16
OpenJDK Runtime Environment (build 17.0.10+7-Ubuntu-122.04.1)
OpenJDK 64-Bit Server VM (build 17.0.10+7-Ubuntu-122.04.1, mixed mode, sharing)

Library Dependencies

Expected Behavior

1. run project with subprojects in dev mode and open it
2. assets are located in a subproject
3. change an asset like a javascript file or something
4. reload the page and the asset is updated

Actual Behavior

1. a change to an asset is never updated until the project is cleaned

Reproducible Test Case

https://github.com/n4cer/playSubprojects_3-0

Description

We have divided a project into 3 subprojects: "common, website, and admin".
Our assets are located in the common module.

Since play 2.9/3.0, we have encountered an issue where changes to these assets are no longer detected in dev mode.
Without "clean", the changes are not applied. If we move the assets to the root project, dev mode works as expected again. However, this results in the assets being missing from the dist packages of admin and website.

[rhs77]

Hallo,

Any news about a fix?

greetings

Rami

[mkurz]

Hallo,

working on it in

• Fix duplicate assets in dist package #12483

[mkurz]

Another report:

• Issue with sbt-web/sassify, sub-projects, and the Play dev server... #12636

[mkurz]

I found the cause and a fix is underway:

• If WebJar version is a "-snapshot", overwrite existing files when extracting webjars/webjars-locator-core#159

[mkurz]

Until the next Play patch release is out you can fix this by upgrading to latest webjars-locator-core, just put in your project/plugins.sbt:

// Can be removed when Play 2.9.4/3.0.4 is released
libraryDependencies += "org.webjars" % "webjars-locator-core" % "0.59"

Let me now if this works for you.
(btw, the version of the sub-project during developing in dev mode should end with -SNAPSHOT, otherwise this fix is not working. But I think this is quite common anyway)

[n4cer]

Works for us!
Thank you!

[mkurz]

Great! This will work in next Play's patch release out of the box.