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  • Claushingebjerg 936 posts 2571 karma points
    Nov 12, 2015 @ 09:45
    Claushingebjerg
    0

    How to sort items?

    Nested Content Feedback

    Im trying to sort the items rendered by nested content like:

     @{
var items = CurrentPage.GetPropertyValue<IEnumerable<IPublishedContent>>("afh").OrderBy("startdato");
    foreach(var item in items) {

    @Umbraco.Field(item, "startdato")
    }

    }

    But i get the errror

    'System.Collections.Generic.List<Umbraco.Core.Models.IPublishedContent>' does not contain a definition for 'OrderBy'

    How do i correctly sort the items?

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  • Lee Kelleher 4020 posts 15802 karma points MVP 13x admin c-trib
    Nov 12, 2015 @ 09:51
    Lee Kelleher
    0

    Hi Claus,

    I'm not familiar with the string syntax in .OrderBy("startdato"), I guess this is an Umbraco extension method? (I typically use lambda syntax)

    I guess this might be similar to the issue you had previously, namespace references are missing?

    Try adding...

    @using Umbraco.Core
@using Umbraco.Web

    ...to the top of your Razor partial?

    Hope that helps?

    Cheers,
    - Lee

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  • Claushingebjerg 936 posts 2571 karma points
    Nov 12, 2015 @ 10:06
    Claushingebjerg
    0

    That didn't do the trick, but maybe you could show a snippet on how to.

    "startdato" is a date picker. I want to sort by the date picker and then take 1. So im looking for the right way to do:

    var items = CurrentPage.GetPropertyValue<IEnumerable<IPublishedContent>>("afh").OrderBy(x => x.startdato).Take(1);
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  • Lee Kelleher 4020 posts 15802 karma points MVP 13x admin c-trib
    Nov 12, 2015 @ 10:16
    Lee Kelleher
    1

    You could try...

    .OrderBy(x => x.GetPropertyValue<DateTime>("startdato"))

    Cheers,
    - Lee

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  • Claushingebjerg 936 posts 2571 karma points
    Nov 12, 2015 @ 10:21
    Claushingebjerg
    0 
    var items = CurrentPage.GetPropertyValue<IEnumerable<IPublishedContent>>("afh").OrderBy(x => x.GetPropertyValue<DateTime>("startdato"));

    Gives me the error

    Compiler Error Message: CS1977: 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 wonder if ill ever learn razor :|

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  • Lee Kelleher 4020 posts 15802 karma points MVP 13x admin c-trib
    Nov 12, 2015 @ 10:29
    Lee Kelleher
    101

    Ah, I think it's the CurrentPage being dynamic. Try swapping it out with Model.Content, see if that works?

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  • Claushingebjerg 936 posts 2571 karma points
    Nov 12, 2015 @ 10:35
    Claushingebjerg
    1

    Bingo!

    You're on the 2016 "i owe you beer at codegarden" list.

    That's the one thing i hate most about razor. The possibillity of doing things more than one way, and the two ways being 99% similar, but then not really... The hours i've spent...

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  • Lee Kelleher 4020 posts 15802 karma points MVP 13x admin c-trib
    Nov 12, 2015 @ 11:16
    Lee Kelleher
    0

    You're welcome! :-)

    With Razor, when I switched over from using XSLT, I got confused with the dynamic/typed approaches. I ended up ignoring all the dynamic stuff and stuck with typed-objects.

    Mixing both dynamic & typed approaches caused me a world of pain ;-)

    Cheers,
    - Lee

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  • Osman Coskun 164 posts 398 karma points
    Apr 22, 2016 @ 20:34
    Osman Coskun
    0

    Thanks for the tips.

    What wolud be the syntax if we needed to change sort order by date?

    Edit:

    OrderBy should be switched by OrderByDescending to change the sort direction.

    Thank you ;)

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  • Osman Coskun 164 posts 398 karma points
    Aug 07, 2016 @ 12:02
    Osman Coskun
    0

    I would like to sort the nested content from another page, i use the following code and it gives error ( CS1977: Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type).

    var timelineNode= Umbraco.Content(CurrentPage.AncestorOrSelf(1).Descendants("timeline").First().Id);
var datesList = timelineNode.GetPropertyValue<IEnumerable<IPublishedContent>>("dates").OrderByDescending(x => x.GetPropertyValue<DateTime>("date"));

    timeline is doc type, dates is nested content data type property.

    If i test without ordering it works. 

    var timelineNode= Umbraco.Content(CurrentPage.AncestorOrSelf(1).Descendants("timeline").First().Id);
var datesList = timelineNode.GetPropertyValue<IEnumerable<IPublishedContent>>("dates");

    Any ideas?

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