Play! framework - views aren't compiled?

问题:

I created a new project and working with eclipse (used eclipsify command).
basically, I moved the app directory from an old project to the new one I created.

the problem is that eclipse doesn't recognize the views. I get errors like:

views.html.viewTopic cannot be resolved to a type

I tried to play compile but it didn't help.
so I got 40 errors. all of them connected to the fact that the views aren't compiled and therefore, the eclipse doesn't recognize them (my guess of course).

what can I do?
by the way, the old project compiled and ran without a problem (I used intellij)

回答1:

The best you can do is just search the Stack Overflow as this topic was discussed really many times.

• Playframework - Eclipse can't detect a new template
• How to make Eclipse see the changes in Play! compiled templates?
• scala code causes error in eclipse for playframework-2.0
• etc, etc...

回答2:

For Java Play Framework v2.4.6 (activator v1.3.7) with Eclipse Mars:

So that you will not have a "can not resolve error" with your viewTopic.render(), you can add this <classpathentry kind="lib" path="target/scala-2.11/classes"/> to your .classpath or right-click on your project -> Build Path -> Configure Build Path -> Add Class Folder and make it point to target/scala-2.11/classes.

回答3:

• Run 'play eclipse' on the command line
• In Eclipse, refresh your Project via hitting F5

回答4:

Re-run the command in play console with the sources this time:
$ eclipse with-source=true

And then go to eclipse and clean your project and build all

回答5:

According to jetbrains, the issue with templates is fixed. If you have play 2 generated source sources included in the IDEA project then you should exclude this folder from the project

http://www.jetbrains.com/idea/webhelp/configuring-folders-within-a-content-root.html

and do File | Invalidate caches and restart.

If you have an SBT project, open it in IDEA via File | Import Project | Sbt type project

Make sure to use the latest Scala and Play 2 plugins.

回答6:

1. Close eclipse project
2. activator eclipse
3. activator compile
4. Open eclipse project
5. Add target/scala-[your-version-here]/classes to your build path as a class folder

回答7:

OK, I solved it.

• I created a new app again
• moved app dir
• only then ran the command play idea