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Hi all;

I have developed a custom navigation.vm file, which displays only the pages in a chosen community, for use in our intranet site. Based on input from this forum, I used Liferay's local service utilities to retrieve Layout objects instead of using the standard $nav_items Velocity variable, using the following code:

1#set ($LayoutLocalService = $portal.getClass().forName("com.liferay.portal.service.LayoutLocalServiceUtil").getMethod("getService", null).invoke(null, null))
2#set ($GroupLocalService = $serviceLocator.findService("com.liferay.portal.service.GroupLocalService"))
3#set($localLayouts = $LayoutLocalService.getLayouts($GroupLocalService.getGroup($company_id, "Lightpath").getGroupId(), false, $getterUtil.getLong("0")))
4
5<nav class="sort-pages" id="navigation">
6
7 <ul>
8 #foreach ( $page in $localLayouts )
9       #set ( $page_name = $page.getName($locale) )
10          #if(${page_name}!= "Welcome")
11             <li>
12                      <a href="$page.getRegularURL($request)" target="$page.getTarget()"><span>$page_name</span></a>
13       </li>
14          #end
15 #end
16 </ul>
17</nav>

The problem I am having is that by changing from $nav_items (which are in fact NavItems), I lost the ability to indicate a "selected" state so that I can use css to indicate which navigation item is selected.

Does anyone know how to convert Layouts BACK into NavItems - within a Velocity file - so that I can get at the isSelected() method again?

Regards,

--Chris

RE: NavItems from Layouts in Velocity

2013年2月11日上午11:52

答复

David H Nebinger

等级: Liferay Legend

帖子: 4496

加入日期: 2006年9月1日

Why not just check out the code for com.liferay.portal.theme.NavItem.isSelected()?

Seems to use the layout and the ThemeDisplay to derive if it's currently enabled, but it looks pretty easy to wrap into your own method...

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RE: NavItems from Layouts in Velocity

2013年2月11日下午1:04

答复

Chris Becker

等级: Junior Member

帖子: 92

加入日期: 2010年6月11日

David H Nebinger:

HI David;

Thanks for the quick response.

I took a look at the code you suggested, which in turn took me to viewing the com.liferay.portal.model.impl.LayoutImpl.isSelected() method, which looked closer to the task at hand. Here is the code

1 public boolean isSelected(
2       boolean selectable, Layout layout, long ancestorPlid) {
3
4       if (selectable) {
5          long plid = getPlid();
6
7          if ((plid == layout.getPlid()) || (plid == ancestorPlid)) {
8             return true;
9          }
10       }
11
12       return false;
13 }

Thinking I could use this in my navigation.vm file (since I was already iterating over Layout objects), I tried the following:

1 <ul>
2       #foreach ( $page in $localLayouts )
3       #set ( $page_name = $page.getName($locale) )
4          #if(${page_name}!= "Welcome")
5                   #set ($selected = $page.isSelected($selectable, $page, $request.getAncestorPlid()))
6             #if ($selected)
7                <li class="selected">
8             #else
9                <li>

However, this did not work. The part I was not sure about was the getAncestorPlid() method from the $request variable. Any thoughts would be appreciated!

Regards,

--Chris

--Chris

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RE: NavItems from Layouts in Velocity

2013年2月11日下午1:19

答复

David H Nebinger

等级: Liferay Legend

帖子: 4496

加入日期: 2006年9月1日

The RequestVars instance uses the layout's getAncestorPlid() value when it is constructed...

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RE: NavItems from Layouts in Velocity

2013年2月12日下午12:53

答复

Chris Becker

等级: Junior Member

帖子: 92

加入日期: 2010年6月11日

I believe that I was in error with the following line of code:
#set ($selected = $page.isSelected($selectable, $page, $request.getAncestorPlid()))

The $request variable has no getAncestorPlid() method to invoke.

But I am still at a loss as to how to get the selected state to work.

Since, in my example, the $page variable is a layout object that is being iterated over, I am assuming (perhaps incorrectly) that the isSelected method (from LayoutImpl.java) can be invoked on the variable.

And if it can, then it is a matter of passing in the correct parameters to determine if the current page is "selected"

I updated the code to the following:

1          #set ($selected = $page.isSelected($selectable, $layout, $layout.getAncestorPlid()))
2             #if ($selected)
3                <li class="selected">
4             #else
5                <li>

I pass in $layout (found in init.vm) and its ancestor plid method. I also pass in the $selectable variable (also in init.vm), but it is not working.

Any guidance at all would be appreciated, as I am not any closer to a useful result.

Regards,

--Chris