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


  • Chriztian Steinmeier 2726 posts 8320 karma points MVP 4x admin c-trib
    May 28, 2019 @ 17:05
    Chriztian Steinmeier
    0

    MegaNav: Getting context while rendering navigation

    Hi all,

    I consider myself an expert in rendering navigations using XSLT, and using Razor I've come quite far as well - as long as they're based on the Content structure it's no problem.

    Now I have a site which is using Cogworks' MegaNav package for the navigation, and here's where I get stuck:

    I need to add a class on a top level item if the currently rendered page is somewhere below it. Easy when using the content structure, but when using MegaNav, I don't have access to any Ancestor/Descendant helper methods that works within the structure built by the editor. At least not as far as I can tell...

    How do you handle this scenario (if at all)?

    /Chriztian

    Copy Link
  • Søren Kottal 530 posts 3521 karma points MVP 2x c-trib
    May 30, 2019 @ 12:46
    Søren Kottal
    0

    Hi Chriztian

    I have not used MegaNav myself, but it seems like the MeganavItem class has a Content property, where the node of the item is stored (if not external).

    So assuming you do something like this:

    <ul>
  @foreach (var item in Model.Content.GetPropertyValue<IEnumerable<MeganavItem>("mainNavigation")))
{
<li>
...
</li>
}
</ul>

    You should be able to test for ancestors like (Model is the current page rendered) 

    if (item.Content != null && item.Content.IsAncestorOf(Model))
{
   // something to do if current page is in the path of item
}
    Copy Link
  • Chriztian Steinmeier 2726 posts 8320 karma points MVP 4x admin c-trib
    May 30, 2019 @ 12:56
    Chriztian Steinmeier
    0

    Brilliant, Søren — had forgot about the Is* helpers, actually.

    Will try it out right away.

    /Chriztian

    Copy Link
  • Chriztian Steinmeier 2726 posts 8320 karma points MVP 4x admin c-trib
    May 30, 2019 @ 13:21
    Chriztian Steinmeier
    0

    Ah, but no :(

    I forgot the original problem again: Because the Meganav structure can be totally different from the actual content structure, I really can't use IsAncestorOf() etc.

    E.g.:

    Even with a simple content structure like this:

    Home
  - About
  - Products

    I can create a Meganav structure that looks like this:

    Our company
  - Who we are (link to /about/)
Our products
  - All of them (link to /products/)

    When rendering the Products page, I need to set a .currentpath class (or similar) on the Our products item and I can't get that info without traversing the actual Meganav model...

    /Chriztian

    Copy Link
  • Søren Kottal 530 posts 3521 karma points MVP 2x c-trib
    May 30, 2019 @ 13:30
    Søren Kottal
    100

    How about this?

    if (item.Children.SelectRecursive(x => x.Children).Select(x => x.Id).Contains(Model.Id)

    This one gets all descendants id's of item, and then checks if the current node's id (Model.Id) is one of them.

    Copy Link
  • Chriztian Steinmeier 2726 posts 8320 karma points MVP 4x admin c-trib
    May 30, 2019 @ 13:41
    Chriztian Steinmeier
    0

    It's works!

    Never heard of SelectRecursive() before - but it's perfect here :)

    Thanks a ton!

    (Thankfully, the Meganav allows setting a max. level, so I don't think there will be any performance concerns with this.)

    /Chriztian

    Copy Link
  • Søren Kottal 530 posts 3521 karma points MVP 2x c-trib
    May 30, 2019 @ 18:39
    Søren Kottal
    0

    Haha, I never used it before - but Intellisense is your friend :)

    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