dominikdorn.com

To make sure that your Play! Application binds on an IPv4 Socket in your Docker-Container, add the following to your build.sbt file

javaOptions in Universal ++= Seq( // docker
....
  "-Djava.net.preferIPv4Stack=true"
)
javaOptions in run += "-Djava.net.preferIPv4Stack=true" // dev modeCode language: JavaScript (javascript)

when running locally, you can also start sbt and tell it to prefer the IPv4 Stack.

sbt -J-Djava.net.preferIPv4Stack=trueCode language: Bash (bash)

This is the successor of my Post “PlayFramework 2.3: Global CSRF Protection – Disable CSRF selectively“, updated to PlayFramework 2.5!

Adjust your files like this:

1. Adjust your application.conf

2. Create your filter definitions

3. Create your wrapper

4. Annotate your route with the NOCSRF Tag

 
Enjoy!

Google Code shut down a year ago, and recently also their “Migrate to Github” feature was disabled.

Because I have/had also a old project hosted (and some people where asking about it recently), I had to find a way on how to migrate the project to Github anyway.

I did these steps

# download the svn dump'ed repo
wget https://storage.googleapis.com/google-code-archive-source/v2/code.google.com/spring-security-facelets-taglib/repo.svndump.gz
# unzip
gunzip repo.svndump.gz
# create the repo
svnadmin create /tmp/testgc
# restore it
svnadmin load /tmp/testgc/ < repo.svndump

# launch a local svn daemon
svnserve --foreground -d

# in another terminal, clone your repo now using git svn (optionally create a authors file for correctly mapping to git usernames)
git svn --stdlayout -A authors.txt clone svn://localhost/tmp/testgc/

# go into the cloned repo
cd testgc/
# add the upstream github repo
git remote add origin https://github.com/domdorn/spring-security-facelets-taglib.git

#push it
git push --set-upstream origin master

#till now, we only have the trunk / master branch
# get atlassians svn-migration-scripts.jar from https://bitbucket.org/atlassian/svn-migration-scripts/downloads
wget https://bitbucket.org/atlassian/svn-migration-scripts/downloads/svn-migration-scripts.jar

# run the scripts and expect the suggested actions
java -Dfile.encoding=utf-8 -jar svn-migration-scripts.jar clean-git

# if you like what you see (usually you do..), perform the actions
java -Dfile.encoding=utf-8 -jar svn-migration-scripts.jar clean-git --force 

# after this i had a branch structure like this:
git branch -a
# * master
#  remotes/origin/0.2_nate
#  remotes/origin/0.4_gblaszczyk
#  remotes/origin/jsf-1.2-spring-2
#  remotes/origin/jsf-1.2-spring-3
#  remotes/origin/jsf-2.0-spring-2
#  remotes/origin/jsf-2.0-spring-3
#  remotes/origin/master
#  remotes/origin/site
#  remotes/origin/site@17
#  remotes/origin/tags/0.1
#  remotes/origin/tags/0.3_jsf-1.2-spring-2
#  remotes/origin/tags/0.3_jsf-1.2-spring-3
#  remotes/origin/tags/0.3_jsf-2.0_spring-2
#  remotes/origin/tags/0.3_jsf-2.0_spring-3
#  remotes/origin/tags/0.5
#  remotes/origin/trunk

# checkout each branch (except tags and trunk) and push it
for i in `git branch -r | grep -v 'tags\|trunk' `; do git checkout ${i/origin\// }; git push;  done

# push the branches
git push --all origin
# checkout each tag and create a tag with the same name

for i in `git branch -r | grep 'tags'`; do git checkout $i; git tag ${i/origin\/tags\// }; done  

# push the tags git push --tags origin 

Thanks to @chrsmith for responding quickly to my google code email (4 minutes, wow!) and telling me about how to download the repo in the svn dump file format.

Thanks to Atlassian for their svn migration scripts

You can see the result of this work at my Spring Security JSF Taglib Github Project.

The PlayFramework documentation states on how to override a simple binding of a Class in your Guice Tests to another implementation, like this:

Application application = new GuiceApplicationBuilder()
    .overrides(bind(Component.class).to(MockComponent.class))
    .build();

If you’re using the CacheApi in your tests, you might stumble upon this kind of error:

Error in custom provider, net.sf.ehcache.ObjectExistsException: Cache cmsCache already exists
 at play.api.cache.EhCacheModule.play$api$cache$EhCacheModule$$bindCache$1(Cache.scala:178):
Binding(interface net.sf.ehcache.Ehcache qualified with QualifierInstance(@play.cache.NamedCache(value=cmsCache)) to ProviderTarget(play.api.cache.NamedEhCacheProvider@77f743af)) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)
 while locating net.sf.ehcache.Ehcache annotated with @play.cache.NamedCache(value=cmsCache)
 at play.api.cache.EhCacheModule.play$api$cache$EhCacheModule$$bindCache$1(Cache.scala:179):
Binding(interface play.api.cache.CacheApi qualified with QualifierInstance(@play.cache.NamedCache(value=cmsCache)) to ProviderTarget(play.api.cache.NamedCacheApiProvider@23f72489)) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)
 while locating play.api.cache.CacheApi annotated with @play.cache.NamedCache(value=cmsCache)
 at play.api.cache.EhCacheModule.play$api$cache$EhCacheModule$$bindCache$1(Cache.scala:180):
Binding(interface play.cache.CacheApi qualified with QualifierInstance(@play.cache.NamedCache(value=cmsCache)) to ProviderTarget(play.api.cache.NamedJavaCacheApiProvider@100cf07)) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)

to fix this error, create first a FakeCacheApi Class for your tests like this:

public class FakeCacheApi implements CacheApi {

    private HashMap<String, Object> data = new HashMap<>();


    @Override
    public <T> T get(String s) {
        return (T) data.get(s);
    }

    @Override
    public <T> T getOrElse(String s, Callable<T> callable, int i) {
        return getOrElse(s, callable);
    }

    @Override
    public <T> T getOrElse(String s, Callable<T> callable) {
        if (data.containsKey(s)) {
            return (T) data.get(s);
        } else {
            try {
                T value = callable.call();
                return value;
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            }
        }
    }

    @Override
    public void set(String s, Object o, int i) {
        data.put(s, o);
    }

    @Override
    public void set(String s, Object o) {
        data.put(s, o);
    }

    @Override
    public void remove(String s) {
        data.remove(s);
    }
}

and then override the bindings in your tests like this:

import play.cache.NamedCacheImpl;

....
Application application = new GuiceApplicationBuilder() .overrides(

bind(CacheApi.class).to(FakeCacheApi.class),
bind(CacheApi.class).qualifiedWith(new NamedCacheImpl("cmsCache")).to(FakeCacheApi.class) // repeat this line for every named cache you have

).build();

The Play-Framework 2.x provides helpers to work with forms. While the markup created by those helpers works ok for many simple projects, more advanced projects require a specific way on how to style form fields.

The Play-Framework documentation shows how to create a custom FieldConstructor to override the way a form-field is rendered.

This works by implicitly importing the newly created FieldConstructor in every form.

Making sure that this custom FieldConstructor is automatically used in every form, requires just a little code in build.sbt:

val templateSettings = Seq(
  TwirlKeys.templateImports += "views.helper.FoundationFieldConstructorHelper._"
)

lazy val mainProject = (project in file("."))
  .enablePlugins(PlayJava)
  ....
  .settings(templateSettings: _*)

Voila! Now this FieldConstructor is used in every form automatically.

An example for a custom FieldConstructor for the Foundation CSS Framework can be found at CoderWall

Packt Publishing, known for their Ebooks and Video courses on programming and programming related stuff, did a survey on whats nice and shiny in our industry at the moment.

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