Sign in Register
Copied to clipboard

Flag this post as spam?

This post will be reported to the moderators as potential spam to be looked at


  • Robin Hansen 135 posts 368 karma points
    Aug 01, 2014 @ 13:11
    Robin Hansen
    0

    Exclude nodes by nodeid in foreach loop

    I need to exclude a set of nodes by their id in a foreach loop...

    I call my id's like this:

    string excludeId = "";
    foreach (var item in resultingString)
    {
       excludeId += @item.Id + ", ";
    }
    var ids = excludeId.Substring(0, excludeId.LastIndexOf(","))
    var childNodes = startNode.DescendantsOrSelf(4).OrderBy("UpdateDate desc").Where(x => x.Id != ids);
    @foreach (var page in childNodes.Take(1))
    {
       
    @page.Name

    }

    How Do I filter out the comma-separated list of nodeid's from childNodes...?

    NOTE: Making an if-sentence inside the foreach-loop is not an option...!

    Copy Link
  • Jeavon Leopold 3074 posts 13632 karma points MVP 11x admin c-trib
    Aug 01, 2014 @ 13:15
    Jeavon Leopold
    0

    Hi Robin,

    Could you please post a little more of your code (especially the first line) so we can work out what startNode is and what type of Razor you are using?

    Jeavon

    Copy Link
  • Robin Hansen 135 posts 368 karma points
    Aug 01, 2014 @ 13:23
    Robin Hansen
    0

    Certainly :)

    @inherits Umbraco.Web.Macros.PartialViewMacroPage    
string excludeId = "";
foreach (var item in resultingString)
{
   excludeId += @item.Id + ", ";
}
var ids = excludeId.Substring(0, excludeId.LastIndexOf(","))

var startNode = Umbraco.Content(Model.MacroParameters["startNodeID"]);**
var childNodes = startNode.DescendantsOrSelf(4).OrderBy("UpdateDate desc").Where(x => x.Id != ids);
@foreach (var page in childNodes.Take(1))
{   
    @page.Name
}
    Copy Link
  • Jeavon Leopold 3074 posts 13632 karma points MVP 11x admin c-trib
    Aug 01, 2014 @ 13:34
    Jeavon Leopold
    101

    Ok, cool, so the main issue is that you are trying to do a lambda on a dynamic object, how about something like this (requires Umbraco v6.2+ or v7.1.2+)?

    var excludesId = "1234,5678,2332";

var startNode = Umbraco.TypedContent(2323);

var childNodes = startNode.DescendantsOrSelf(4).Where(x => !x.Id.ToString().CsvContains(excludesId)).OrderBy("UpdateDate desc");
foreach (var page in childNodes.Take(1))
{
    @page.Name
}
    Copy Link
  • Robin Hansen 135 posts 368 karma points
    Aug 01, 2014 @ 13:41
    Robin Hansen
    0

    This is typical when I try to write Lambda:

    "Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type"

    :(

    (I'm using Umbraco v. 7.1.4 by the way...)

    Copy Link
  • Jeavon Leopold 3074 posts 13632 karma points MVP 11x admin c-trib
    Aug 01, 2014 @ 13:58
    Jeavon Leopold
    0

    Did you try the above snippet I posted?

    Copy Link
  • Robin Hansen 135 posts 368 karma points
    Aug 01, 2014 @ 14:38
    Robin Hansen
    0

    Yes but I cannot use TypedContent:

    var startNode =Umbraco.TypedContent(2323);

    I need to use :

    var startNode =Umbraco.Content(Model.MacroParameters["startNodeID"]);

    How ever - the Lambda expression does not filter out any nodes as I whant to - I still se some certain nodes as should not be visible...

    It will only sort on 1 (one) id - not a comma serpareted list of Ids

     

     

    Copy Link
  • Jeavon Leopold 3074 posts 13632 karma points MVP 11x admin c-trib
    Aug 01, 2014 @ 14:40
    Jeavon Leopold
    0

    You need to use it otherwise you cannot use a lambda.

    Like this:

    var startNode = Umbraco.TypedContent(Model.MacroParameters["startNodeID"].ToString());
    Copy Link
  • Robin Hansen 135 posts 368 karma points
    Aug 01, 2014 @ 14:50
    Robin Hansen
    0

    I'll give it a try - about the sorting - it seems that it will only sort on 1 id - not a list of ids... :|

    Copy Link
  • Robin Hansen 135 posts 368 karma points
    Aug 04, 2014 @ 11:20
    Robin Hansen
    0

    This one nailed it...: :)

    var startNode = Umbraco.TypedContent(Model.MacroParameters["startNodeID"].ToString());
    var excludedId = "";
    foreach (var item in resultingString.OrderBy(x => x.Id))
    {
        excludedId += @item.Id + ", ";
    }
    List<int> excludedAppIds = excludedId.Substring(0, excludedId.LastIndexOf(",")).Split(',').Select(x => x.Trim()).Select(x => Int32.Parse(x)).ToList();
    var childNodes = startNode.DescendantsOrSelf(4).Where(i => !excludedAppIds.Contains(i.Id));
    Copy Link

  • This forum is in read-only mode while we transition to the new forum.

    You can continue this topic on the new forum by tapping the "Continue discussion" link below.

Please Sign in or register to post replies