how to get version number or something else into my zip archive in gradle - gradle

Question

EDIT:
I am trying to run these two commands and get these results in a gradle subproject...
gradle assemble -> databus-Developer-Build.zip
gradle -DmyVersion=1.0.2 -> databus-1.0.2.zip
Currently, my output is databus-null.zip IF I use $version instead of $myVersion. When using $MyVersion, I get the error "myVersion is not a property on that task". :( :(.
EDIT
So, trying out the first answer completely failed with "Could not find property $myVersion on task ':webserver:myZip"
NOTE: I am trying to do this in a subproject right now. Here is the subproject gradle code...
project(':webserver') {
project.ext.genLibDir = file('lib')
project.ext.fixedLibDir = file('../master/libother')
dependencies {
compile project(':master')
compile fileTree(dir: '../webserver/lib', include: '*.jar')
compile fileTree(dir: '../webserver/play-1.2.4/framework/lib', include: '*.jar')
compile fileTree(dir: '../webserver/play-1.2.4/framework', include: 'play-*.jar')
}
task deleteJars(type: Delete) {
ext.collection = files { genLibDir.listFiles() }
delete ext.collection
}
task copyJars(type: Copy) {
from(configurations.compile) {}
from(fixedLibDir) {}
into genLibDir
}
copyJars.dependsOn('deleteJars')
classes.dependsOn('copyJars')
task myZip(type: Zip) {
archiveName "dashboard-"+$myVersion+".zip"
from('..') {
include 'webserver/run*.sh'
include 'webserver/app/**'
include 'webserver/conf/**'
include 'webserver/play-1.2.4/**'
include 'webserver/public/**'
}
}
assemble.dependsOn('myZip')
//playframework has it's own generation of .classpath and .project fils so do not
//overwrite their versions. NEED to call "play.bat eclipsify" here...
task eclipse(overwrite: true) {
}
gradle.taskGraph.whenReady {taskGraph ->
if (taskGraph.hasTask(assemble) && myVersion == null) {
myVersion = 'Developer-Build'
}
}
}
thanks,
Dean

Answer 1

I think the reason that you get the error "myVersion is not a property on that task" is, that you have to pass the property with -P instead of "-D"

Answer 2

ok, the correct answer is doing something like this...(add this to allprojects section)..
if (project.hasProperty('myVersion')) {
project.ext.xVersion = project.myVersion
} else {
project.ext.xVersion = 'Developer-Build'
}
and interestingly enough this below one does NOT work because 'version' seems to be some sort of reserverd property and is set to unspecified on startup...
if (project.hasProperty('version')) {
project.ext.xVersion = project.version
} else {
project.ext.xVersion = 'Developer-Build'
}
Seeing as version seems to be a reserved property, it is most likely used in publishing artifacts so the best solution then maybe the following
if (project.hasProperty('myVersion')) {
project.version = project.myVersion
} else {
project.version = 'Developer-Build'
}
and the automated build passes in myVersion and developers of course don't.