Connect jelly and java

[jenkin...@gmail.com]

Hi all,

I am currently developing my first Jenkins plugin.
I need to have a dropdown menu on the job page that is filled via a java method, but the jelly and the java file don't seem to work properly together: There is just an empty dropdown list.
What could be wrong?

jobMain.jelly

<j:jelly
 xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define"
xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
    <f:entry field="selection" title="Choose">
        <f:select />
    </f:entry>
</j:jelly>

JavaClass.java

public class JavaClass implements Action {


private AbstractProject ap;


public JavaClass(AbstractProject ap) {

    this.ap = ap;

}


public String getIconFileName() {

    return null;

}


public String getDisplayName() {

    return "";

}


public String getUrlName() {

    return "something";

}


@Extension

public static final class DescriptorImpl extends TransientProjectActionFactory {


    String selection;


    public DescriptorImpl() throws IOException {

    }


    @DataBoundConstructor

    public DescriptorImpl(String selection) {

        this.selection = selection;

    }


    public ListBoxModel doFillSelectionItems() throws IOException {

        ListBoxModel model = new ListBoxModel();

        model.add("test");

        return model;

    }


    @Override

    public Collection<? extends Action> createFor(AbstractProject target) {

        return Arrays.asList(new JavaClass(target));

    }

  }

}        

[Ulli Hafner]

This field should be in your JavaClass class



    public DescriptorImpl() throws IOException {

    }




No constructor required

    @DataBoundConstructor

    public DescriptorImpl(String selection) {

        this.selection = selection;

    }



This DataBoundConstructor constructor should be in your JavaClass class


    public ListBoxModel doFillSelectionItems() throws IOException {

        ListBoxModel model = new ListBoxModel();

        model.add("test");

        return model;

    }


    @Override

    public Collection<? extends Action> createFor(AbstractProject target) {

        return Arrays.asList(new JavaClass(target));

    }

  }

}        


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[jenkin...@gmail.com]

Thanks for replying!
So now the code looks like this, right?

public class JavaClass implements Action {
 
private AbstractProject ap;

public String selection;

 
public JavaClass(AbstractProject ap) {
    this.ap = ap;
}
 

@DataBoundConstructor
public JavaClass(String selection) {
        this.selection = selection;
}
 

public String getIconFileName() {
    return null;
}
 
public String getDisplayName() {
    return "";
}
 
public String getUrlName() {
    return "something";
}
 
@Extension
public static final class DescriptorImpl extends TransientProjectActionFactory {

 
    public ListBoxModel doFillSelectionItems() throws IOException {

        ListBoxModel model = new ListBoxModel();
        model.add("test");
        return model;
    }
 
    @Override
    public Collection<? extends Action> createFor(AbstractProject target) {
        return Arrays.asList(new JavaClass(target));
    }
  }
}

However the dropdown list is still empty. The doFill method is never called.
Do you have another hint?

[Mads Nielsen]

I dont think an action is a describable object? So i dont think tour approach will work.

[Jenkins User]

Ah, ok.. does that mean my class has to implement the Describable interface?
I'm really not yet familiar with all those Jenkins classes and interfaces :/
This "implements Action" and "extends TransientProjectActionFactory" combination is something I copied from another plugin because I knew it would accept the jobMain.jelly for the job page. Is there a solution that can fill the dropdown as well?

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[Robert Sandell]

Well the project main page is not a place that is prepared to do any form bindings for you since its not a config page.

You should just need to create a normal html select in your jobMain.jelly and fill it in whatever "static" way you like.

<select name="mySelect">

 <option value="test">Test</option>

</select>

The "it" var in jelly is a reference to your Action instance, so if you implement a method in that you could do something like the following:

<select name="mySelect">

 <j:forEach var="v" items="${it.getMyData()}">

   <option value="${v.value}">${v.name}</option>

 </j:forEach>

</select>

Just like we did all those years ago in jsp and php ;)

/B

Robert Sandell

Software Engineer

CloudBees Inc.