Skip to main content

Generate Structure Group Navigation - Reorder TBB

Image
By
This TBB Generates an XML containing all Structure Groups and Pages whose title abides to a naming convention, in hierarchical structure. The naming convention is given by regular expression (e.g. title starts with 3 digits followed by underscore or space).

Description

Name
Generate Structure Group Navigation Reorder TBB
Type
·    Template in .NET Assembly
Description
Used to:
·    Generate navigation XML;
Notes:
This TBB reads the Publication's Root Structure Group and retrieves all child SGs and Pages using the .GetListItems() method.
The template reorders each node in the retrieved XML and it places it in a hierarchical structure that matches the SG/Page nesting.
Each SG object is represented as a tcm:Item node that has potential sub-nodes (other SGs and Pages).
The Page objects are represented also as tcm:Item nodes and they are the leaf nodes in the XML document.
The produced XML document is added to the Package as item named "Output".
Parameters
N/A
Applicable to
Page Templates - no other TBB is required on the PT

The XML

Each node is the navigation XML has the following attributes:
  • ID - the SG or Page TCMURI;
  • Title - the name of the SG or Page (as defined in Tridion CM);
  • DisplayTitle - the name of the SG or Page after removing the three digit and underscore or space prefix;
  • Url - the PublicationLocationUrl of the SG or Page;
Sample navigation XML:

<tcm:ListItems ID="tcm:1-1-4" Title="Root">
  <tcm:Item ID="tcm:1-2-4" Title="010 About Us" DisplayTitle="About Us" Url="/about-us">
    <tcm:Item ID="tcm:1-3-64" Title="010 Who are we?" DisplayTitle="Who are we?" Url="/about-us/who-are-we.html"/>
  </tcm:Item>
  <tcm:Item ID="tcm:1-4-64" Title="020 Contact Us" DisplayTitle="Contact Us" Url="/contact-us.html"/>
</tcm:ListItems>

The Code

The TBB uses templating API method .GetListItems(filter) to retrieve all Structure Groups and Pages in a flat XML document format.

The template applies hierarchy to the XML document by reordering each node and appending it to its rightful parent.

private XmlElement BuildNavigationReorder(StructureGroup structureGroup) {
    XmlElement navigationXml = structureGroup.GetListItems(filter);
    List<XmlElement> itemList = new List<XmlElement>(navigationXml.ChildNodes.Cast<XmlElement>());
    namespaceManager = new XmlNamespaceManager(navigationXml.OwnerDocument.NameTable);
    namespaceManager.AddNamespace("tcm", TCM_NAMESPACE_URI);

    foreach (XmlElement item in itemList) {
        string itemTitle = item.Attributes[ATTRIBUTE_TITLE].Value;
        if (IsNavigable(itemTitle)) {
            TcmUri itemId = new TcmUri(item.Attributes[ATTRIBUTE_ID].Value);
            ItemType itemType = itemId.ItemType;
            TcmUri parentId = null;

            // enhance item node
            if (itemType == ItemType.StructureGroup) {
                StructureGroup childSG = m_Engine.GetObject(itemId) as StructureGroup;
                parentId = childSG.OrganizationalItem.Id;
                EnhanceNode(item, childSG);
            } else if (itemType == ItemType.Page) {
                Page childPage = m_Engine.GetObject(itemId) as Page;
                parentId = childPage.OrganizationalItem.Id;
                EnhanceNode(item, childPage);
            }

            // reorder - apply hierarchy
            XmlNode parent = navigationXml.SelectSingleNode(String.Format("//tcm:Item[@ID='{0}']", parentId), namespaceManager);
            if (parent == null) {
                if (parentId != structureGroup.Id) {
                    navigationXml.RemoveChild(item);
                }
            } else {
                parent.AppendChild(item);
            }
        } else {
            navigationXml.RemoveChild(item);
        }
    }

    return navigationXml;
}

Enhance the XmlElement corresponding to a SG or Page with information such as DisplayTitle, URL, etc.

private void EnhanceNode(XmlElement item, Page page) {
    string displayTitle = navigationItemRegex.Replace(page.Title, "");
    item.SetAttribute(ATTRIBUTE_DISPLAY_TITLE, displayTitle);

    string url = page.PublishLocationUrl;
    item.SetAttribute(ATTRIBUTE_URL, url);
}

private void EnhanceNode(XmlElement item, StructureGroup structureGroup) {
    string displayTitle = navigationItemRegex.Replace(structureGroup.Title, "");
    item.SetAttribute(ATTRIBUTE_DISPLAY_TITLE, displayTitle);

    string url = structureGroup.PublishLocationUrl;
    item.SetAttribute(ATTRIBUTE_URL, url);
}

Only consider items that match a given Regular Expression. In this instance, the expression is ^\\d{3}[_ ] (starts with three digits followed by an underscore or space).

private bool IsNavigable(string title) {
    return navigationItemRegex.IsMatch(title);
}


Labels:

Comments

Post a Comment

Popular posts from this blog

Running sp_updatestats on AWS RDS database

By
Part of the maintenance tasks that I perform on a MSSQL Content Manager database is to run stored procedure sp_updatestats . exec sp_updatestats However, that is not supported on an AWS RDS instance. The error message below indicates that only the sa  account can perform this: Msg 15247 , Level 16 , State 1 , Procedure sp_updatestats, Line 15 [Batch Start Line 0 ] User does not have permission to perform this action. Instead there are several posts that suggest using UPDATE STATISTICS instead: https://dba.stackexchange.com/questions/145982/sp-updatestats-vs-update-statistics I stumbled upon the following post from 2008 (!!!), https://social.msdn.microsoft.com/Forums/sqlserver/en-US/186e3db0-fe37-4c31-b017-8e7c24d19697/spupdatestats-fails-to-run-with-permission-error-under-dbopriveleged-user , which describes a way to wrap the call to sp_updatestats and execute it under a different user: create procedure dbo.sp_updstats with execute as 'dbo' as
1 comment
Read more

I Have Gone Dark

By Unknown
Maybe it's the Holidays, but my mood has gone pretty dark. That is, regarding the look and feel of my computer and Tridion CME, of course. What I did was to dim the lights on the operating system, so I installed Placebo themes for Windows 7 . I went for the Ashtray look -- great name :) My VM looks now like this: But, once you change the theme on Windows, you should 'match' the theme of your applications. Some skin easily, some not. The Office suite has an in-built scheme, which can be set to Black , but it doesn't actually dim the ribbon tool bars -- it looks quite weird. Yahoo Messenger is skinnable, but you can't change the big white panels where you actually 'chat'. Skype is not skinnable at all. For Chrome, there are plenty of grey themes. Now i'm using Pro Grey . But then I got into changing the theme of websites. While very few offer skinnable interfaces (as GMail does), I had to find a way to darken the websites... Enter Stylish -- a pl
4 comments
Read more

REL Standard Tag Library

By
The RSTL is a library of REL tags providing standard functionality such as iterating collections, conditionals, imports, assignments, XML XSLT transformations, formatting dates, etc. RSTL distributable is available on my Google Code page under  REL Standard Tag Library . Always use the latest JAR . This post describes each RSTL tag in the library explaining its functionality, attributes and providing examples. For understanding the way expressions are evaluated, please read my post about the  Expression Language used by REL Standard Tag Library . <c:choose> / <c:when> / <c:otherwise> Syntax:     <c:choose>         <c:when test="expr1">             Do something         </c:when>         <c:when test="expr2">             Do something else         </c:when>         <c:otherwise>             Do something otherwise         </c:otherwise>     </c:choose> Att
2 comments
Read more