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  <AlkaconDocumentationTopicFrame language="en">
    <Overview name="Overview0">
      <links/>
      <content><![CDATA[<p>With OpenCms version 9.5 containers have become much more flexible than before. In particular three features have been added:</p>
<ul>
<li>containers can be nested</li>
<li>containers can have permissions attached</li>
<li>containers can have a param attribute that can be evaluated in formatters</li>
<li>containers can display a default text if they are empty</li>
</ul>
<p>In this demo we explore all of these features. We define a layout content that exposes one, two or three nested containers. Via the layout content, you can also set which users can add or remove contents in the exposed containers.</p>
<p>The example is simple, but somehow artificial. A real use-case where all the new features play together is the grid demo shipped with OpenCms 9.5. In this demo the template is designed as in a modular construction system:</p>
<ul>
<li>A template jsp exposes just one container where only template developers can add contents.</li>
<li>In the template's container, template developers can place template rows that expose new containers (where the template developer can decide who can add contents)</li>
<li>In containers exposed by template rows it is allowed to place layout rows, which themselves make up new containers.</li>
<li>The param attribute is used to forward information from template row containers to layout rows.</li>
</ul>
<p>That everything fits together perfectly in the demo, other features are used as well:</p>
<ul>
<li>Element views are used prevent edit points from overlapping and have a clear focus on what you are editing</li>
<li>Permissions on resource types are used allow adding and editing template rows only for template developers and to allow element authors to add layout rows - but not to add new ones.</li>
</ul>]]></content>
    </Overview>
    <Teaser name="Teaser0">
      <links/>
      <content><![CDATA[<p>Design your page layout with nested containers.</p>]]></content>
    </Teaser>
    <Keywords><![CDATA[demo, container, nested container, example, permissions]]></Keywords>
    <InterestingFor><![CDATA[c_developer]]></InterestingFor>
    <RelatedLinks>
      <Link>
        <URI>
          <link internal="true" type="WEAK">
            <target><![CDATA[/sites/default/opencms-documentation/content-in-opencms/formatters-and-their-configuration/nested-containers/]]></target>
            <uuid>3e5f51a4-334d-11e4-ae50-d144f6bb3566</uuid>
          </link>
        </URI>
        <LinkText><![CDATA[More infos on nested containers (including another simple use case).]]></LinkText>
      </Link>
    </RelatedLinks>
    <NewInVersion><![CDATA[9.5]]></NewInVersion>
    <NewInDocuVersion><![CDATA[9.5]]></NewInDocuVersion>
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