am I implementing the Version 3 CustomNavigationItem correctly?

Question

the problem I'm having is the default label is missing and when I edit the widget, I can see a GUID instead of "Map Apps" the so here is my code and then below that a screen shot:

 public class MapsGroupNavigationItem : TeeuV3.CustomNavigationItem
        {
            int _groupId = -1;
            Func<string> _getLabel;
            IList<PublicApi.Entities.MapApp> _mapapps;
            internal MapsGroupNavigationItem(TeeuV3.ICustomNavigationPlugin plugin, TeeuV3.ICustomNavigationItemConfiguration configuration, Guid id, int groupId, Func<string> getLabel)
            {
                Plugin = plugin;
                Configuration = configuration;
                UniqueID = id;
                 
                _groupId = groupId;
                _getLabel = getLabel;
           
            }

            #region ICustomNavigationItem Members

            public TeeuV3.CustomNavigationItem[] Children { get; set; }
            public TeeuV3.ICustomNavigationItemConfiguration Configuration { get; private set; }
            public string CssClass { get { return "mapapp"; } }
            public string Label { get { return _getLabel(); } }
            public TeeuV3.ICustomNavigationPlugin Plugin { get; private set; }
            public Guid UniqueID { get; private set; }

            public new bool IsSelected(string currentFullUrl)
            {
                return currentFullUrl.Contains("/mapapps/") || currentFullUrl.EndsWith("/mapapps") || currentFullUrl.EndsWith("/mapapps/");
            }

            public new bool IsVisible(int userId)
            {
                return !string.IsNullOrEmpty(Url) &&  PublicApi.MapApps.CanRead(_mapapps.FirstOrDefault().ApplicationId);
            }

            public string Url
            {
                get
                {
                    // if (_groupId == -1) { return null; }
                    if (_mapapps != null && _mapapps.Count > 0)
                    {
                        if (_mapapps.Count == 1)
                        {
                            if (_mapapps.FirstOrDefault().Group != null && _mapapps.FirstOrDefault().Group.Url != null)// && _mapapp.SafeName != null)
                            {
                                return _mapapps.FirstOrDefault().Group.Url + "mapapps/" + _mapapps.FirstOrDefault().SafeName + "/maps/"; // InternalApi.SourceingUrlService.SourceListUrl(_groupId);
                            }
                        }
                        else
                        {
                            if (_mapapps.FirstOrDefault().Group != null && _mapapps.FirstOrDefault().Group.Url != null)// && _mapapp.SafeName != null)
                            {
                                return _mapapps.FirstOrDefault().Group.Url + "mapapps/";
                            }
                        }
                    }
                   // return _mapapps.FirstOrDefault().Group.Url + "mapapps/";
                   return "";
                }
            }

            #endregion
        }

Harley Parks · Answer

Was able to migrate the original code from 9.x to 12.x The isVisible may need a permission for it however.. so for now it's always true And nice to see it also selects the item.. so it shows up in the cookie crumb path. So the solution is to Create the CustomNavigationItem object, so using a new object, and populate all 6 properties. When it applies private CustomNavigationItem GetCustomNavigationItem( int groupId )
 {
 CustomNavigationItem newItem = new CustomNavigationItem();
 newItem.DefaultLabel = GetDefaultLabel;
 newItem.DefaultDescription = GetDefaultLabelDescription;
 
 if (groupId > -1)
 {
 IList<PublicApi.Entities.MapApp> _mapapps = PublicApi.MapApps.List(groupId);
 if (_mapapps != null && _mapapps.Count > 0)
 {
 if (_mapapps.FirstOrDefault().Group != null)
 {
 newItem.DefaultAvatarUrl = _mapapps.FirstOrDefault().Group.AvatarUrl;
 newItem.CssClass = "community-map-apps";
 newItem.IsVisible = CustomeNavigationItemIsVisible;
 newItem.IsSelected = CustomNavigationItemIsSelected;

 if (_mapapps.Count == 1)
 {

 PublicApi.Entities.MapApp _mapApp = _mapapps.FirstOrDefault();

 if (_mapApp.Group != null && _mapApp.Group.Url != null)
 {
 newItem.DefaultLabel = () => _mapApp.Name;
 newItem.Url = _mapApp.Group.Url + "mapapps/" + _mapApp.SafeName + "/maps/";
 }
 }
 else
 {
 if (_mapapps.FirstOrDefault().Group != null && _mapapps.FirstOrDefault().Group.Url != null)// && _mapapp.SafeName != null)
 {
 newItem.Url = _mapapps.FirstOrDefault().Group.Url + "mapapps/";
 }
 }
 }
 }

 }

 return newItem;
 } The IsVisible and the IsSelected bool CustomeNavigationItemIsVisible(int accessingUserId) 
 {
 _accessingUserId = (int)accessingUserId;
 // need a check to see if permission is allowed 
 return true;
 }
 bool CustomNavigationItemIsSelected(string currentFullUrl, Telligent.Evolution.Extensibility.Urls.Version1.PageContext PageContext ) 
 {
 bool isSelected = false;
 if (currentFullUrl.Contains("/mapapps/") || currentFullUrl.EndsWith("/mapapps") || currentFullUrl.EndsWith("/mapapps/"))
 {
 isSelected = true;
 }
 return isSelected;
 } 
 
 and the Label with label Description private string GetDefaultLabel () 
 {
 string label = _translation.GetLanguageResourceValue("configuration_defaultLabel");
 return label; 
 }
 
 private string GetDefaultLabelDescription() 
 {
 string label_description = _translation.GetLanguageResourceValue("configuration_defaultLabel_description");
 return label_description; 
 } there is not much more if you are following the polling app, just change the way the Custom Navigation Item is handled.