通过可见访问特定资源中的属性 [英] Access to a property in a specific resource via sightly

问题描述

我想访问资源中的特定属性。

I want to access to a specific property in resource.

主要资源有两个孩子，而该应用程序位于第一个孩子中。我想从第二个孩子那里得到财产。

The main resource hat two children and the app is in the first one. I want to get a property from the second child.

我可以找到类似的东西吗：

Can i find something like :

 ${resource.parent.child[1].valueMap.title} 

谢谢！

推荐答案

开始-请注意，除非保证孩子的顺序，否则您正在使用sling：OrderedFolder或其他一些有序类型。因此，试图让第二个孩子变得毫无意义。

To start - note that the order of the children may not be guaranteed, unless you're using sling:OrderedFolder or some other ordered type. So trying to get the "second" child may not even make sense.

话虽如此，我可能没有想到一些有效的用例，第二个孩子-据我所知，您将需要创建一个Java或JS对象并使用使用Api 。

Having said that, there may some valid use cases that I am not thinking of for needing to get the second child -- as far as I can tell you will need to create a Java or JS object and make use of the Use Api.

package apps.your_app.components.yourComponent;

import com.adobe.cq.sightly.WCMUsePojo;
import org.apache.sling.api.resource.Resource;

import java.util.Iterator;

public class Model extends WCMUsePojo {

    @Override
    public void activate() throws Exception {
        //do some stuff if needed
    }

    public Resource getSecondSibling() {
        Resource parent = getResource().getParent();
        Resource secondSib = null;
        Iterator<Resource> children = parent.listChildren();

        //find the second child
        for (int i = 0; i < 2; i++)
            secondSib = children.next();
        return secondSib;
    }
}

在明显的地方使用它：

Using it in the sightly:

<sly data-sly-use.model="Model">${model.secondSibling.propertyName}</sly>

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