How to add list of configurable elements to a Jenkins plugin configuration page?

[Tomas Bjerre]

How to add list of configurable elements to a Jenkins plugin configuration page?

I have a list of configurable items. It should be able to grow dynamically and each item has 3 fields. There is initially one row, if that is populated I want to add a new empty row.

I have 2 Java files to store the config.

...

public class MainConfigRecorder {

 List<CustomConfig> customConfigs;

...

And the customConfig

...

public class CustomConfig {

 private String name;

 private String pattern;

 private String link;

 ...

 public String getLink()

 ...

 public void setLink(String link)

 ...

...

In the config.jelly I loop through the customConfigs:

...

  <j:forEach var="customConfig" items="${config.customConfigs}" indexVar="i">

    <f:block>

    <table cellspacing="5">

      <tr>

        <td width="200">

          <f:textbox name="customConfig[${i}].name" value="${customConfig.name}" />

...

Problem is when the config is saved! I cannot deserialize it to the Java objects.

I can see this when I inspect the HTML code in browser:

<input name="customIssues[0].name" type="text" class="setting-input   " value="">

When the form i ssubmitted and I debug:

public final class GitReleasenotesDescriptor extends BuildStepDescriptor<Publisher> {

...

 @Override

 public Publisher newInstance(StaplerRequest req, JSONObject formData)

I can see this in formData:

{"fromType":"fromFirstCommit","fromReference":"","toType":"toMaster","toRefeference":"","name":"name","pattern":"pattern","link":"link","stapler-class":"org.jenkinsci.plugins.grl.GitReleasenotesRecorder","kind":"org.jenkinsci.plugins.grl.GitReleasenotesRecorder"}

I did not expect:
..."name":"name","pattern":"pattern","link":"link"...

I was expecting:

..."customIssues": [{ "name":"name","pattern":"pattern","link":"link"}]...

Any suggestions?

[Tomas Bjerre]

It seems I should use repeatable tag here (https://jenkins-ci.org/maven-site/jenkins-core/jelly-taglib-ref.html#form:repeatable) but I'm now getting a Javascript error. Perhaps a Jenkins-bug? See the ip variable is undefined here.

<f:repeatable var="customIssue" field="customIssues" items="${config.customIssues}">

    <table>

    <tr>

      <th align="left" width="200">

      <f:entry field="name">

        <f:textbox value="${customIssue.name}" default="" />

      </f:entry>

      </th>

    </tr>

    </table>

  </f:repeatable>