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  • Jesper Skjønnemand 39 posts 274 karma points
    Jan 13, 2020 @ 12:06
    Jesper Skjønnemand
    0

    Hello I am trying the following:

    • Create a list of my schools (document type)
    • For each school on my list I want to
      • Create a list of available courses (multinode tree picker)
      • Check if that list contains the current page
      • If it does: Write Url and Name of the school page

    So far my template looks like this:

      @{
        var currentCourse = Model.Content.Id;
        var mySchools = Model.Content.Site().Descendants("Skole").ToArray();
            foreach(var item in mySchools) 
            {
            var schoolCourses = item.GetPropertyValue<IEnumerable<IPublishedContent>>("selectedCourses").ToArray();
            if (schoolCourses.Contains("CurrentCourse") == true)
                {
                <a href="@item.Url">@item.Name</a>
                }
            }
        }
    

    Umbraco does not like this line:

    if (schoolCourses.Contains("CurrentCourse") == true)
    

    I get this Compilation Error:

    CS1929: 'IPublishedContent[]' does not contain a definition for 'Contains' and the best extension method overload 'Queryable.Contains<string>(IQueryable<string>, string)' requires a receiver of type 'IQueryable<string>'
    

    What do I need to change? Best

  • Jonathan Distenfeld 105 posts 615 karma points
    Jan 15, 2020 @ 06:58
    Jonathan Distenfeld
    0

    Hi Jesper,

    try referencing namespace "System.Linq" on top of your template.

    @using System.Linq;

    ~ Jonathan

  • Jesper Skjønnemand 39 posts 274 karma points
    Jan 22, 2020 @ 13:00
    Jesper Skjønnemand
    0

    Hi Jonathan

    I added @using System.Linq; in the top of my template without much success.

    Could it be my syntax with == true that is wrong?

  • Jonathan Distenfeld 105 posts 615 karma points
    Jan 23, 2020 @ 06:43
    Jonathan Distenfeld
    100

    Hi Jesper,

    the part with == true is not wrong, but you shouldn't need it anyway. Contains will return a bool you can check on.

    The problem is that you are trying to check if a string is part of an IPublishedContent-Array. This won't work, you will have to check for IPublishedContent.

    Try the following:

    @using System.Linq;
    @{
        var mySchools = Model.Content.Site().Descendants("Skole");
        foreach (var item in mySchools)
        {
            var schoolCourses = item.GetPropertyValue<IEnumerable<IPublishedContent>>("selectedCourses");
            if (schoolCourses.Contains(Model.Content))
            {
                <a href="@item.Url">@item.Name</a>
            }
        }
    }
    

    Hope this helps.

    ~ Jonathan

  • Jesper Skjønnemand 39 posts 274 karma points
    Jan 23, 2020 @ 09:06
    Jesper Skjønnemand
    1

    Hi Jonathan

    This works 100 % as I hoped it would.

    As you have probably guessed I am at the early stages of learning Umbraco templating, so this was a very usefull lesson.

    If this forum had a "send a nice cold IPA" function, I would definitely use it now.

    All the best

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