unable to get content by id in controller

Mubeen 15 posts 126 karma points

Dec 30, 2020 @ 15:39

Unable to get Content by ID in Controller

I am trying to get a content node based on the key i am getting from a property. But i am unable to find the Content node for that key. Root has a nested content property which have the content keys in it when i get the value in the controller. I wan to use that key to get the actual nested content node.

private void Generate(IContent root, List<Node> nodes, List<Link> links, int levels, int nodeId = 0)
    {
        nodeId += 1;
        levels += 1;
        nodes.Add(new Node() 
        { 
            id = nodeId,
            label = root.Name
        });
        var ChildNodesStr = root.GetValue<string>("linkedElements");
        var ChildNodes = ChildNodesStr == null ? new List<RootObject>() : JsonConvert.DeserializeObject<List<RootObject>>(ChildNodesStr);
        foreach (var child in ChildNodes)
        {
            nodeId += 1;
            nodes.Add(new Node()
            {
                id = nodeId,
                label = child.name
            });
            IContentService contentService = Services.ContentService;
            var contentId = new Guid(child.key);//Key is of the following format, key = 7182e27e-860d-4b9b-9060-5acd3d7b00c9
            var node = contentService.GetById(contentId);// node is null and no content is found
            Generate(node, nodes, links, levels, nodeId);
        }
    }

public class RootObject
{
    public string key { get; set; }
    public string name { get; set; }
    public int relationType { get; set; }
}

Can anyone please point me to the right direction?

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Alex Skrypnyk 6182 posts 24284 karma points MVP 8x admin c-trib

Dec 30, 2020 @ 22:00

Hi Mubeen

I think you are getting childNodes in the wrong format.

Try to use IEnumerable

var ChildNodes = root.GetValue<IEnumerable<IPublishedContent>>("linkedElements");

And you don't need to use Content service to get each child node, just loop through ChildNodes and get all needed fields.

Thanks, Alex

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Mubeen 15 posts 126 karma points

Dec 31, 2020 @ 11:29

Hi Alex!

Thank you for your response. I tried to use IEnumerable the way you suggested. But i am getting null in childNodes. enter image description here Does it have to do with something that the property i am trying to get linkedElements is a Nested Content property which in turn is using a custom DocType?

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Alex Skrypnyk 6182 posts 24284 karma points MVP 8x admin c-trib

Dec 31, 2020 @ 14:23

Are you using umbraco 7? Can you show me your backend? how does the nested content look like?

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Mubeen 15 posts 126 karma points

Dec 31, 2020 @ 16:54

I am using the Umbraco version 7.15.5. Following is the property i am trying to access. enter image description here

And this is the property definition in docType enter image description here

And the DocType i am using in the Nested Content Property is following enter image description here

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Mubeen 15 posts 126 karma points

Jan 04, 2021 @ 17:39

I solved it using the IPublishedContent instead of IContent. Now my code looks something like this.

private void Generate(IPublishedContent root, List<Node> nodes, List<Link> links, int levels = 1, int nodeId = 1)
        {
            var parentId = nodeId;
            var lev = 1;
            if (levels > 1)
                lev = levels;
            else
                lev = Levels + 1;
            nodes.Add(new Node() 
            { 
                id = nodeId,
                label = splitWords(root.Name)
            });
            if (root.HasProperty("linkedElements"))
            {
                var ChildNodes = root.GetPropertyValue<IEnumerable<IPublishedContent>>("linkedElements");
                foreach (var child in ChildNodes)
                {
                    nodeId += 1;
                    links.Add(new Link()
                    {
                        from = parentId,
                        to = nodeId,
                        label = child.GetPropertyValue<string>("relationType")
                    });
                    Generate(child, nodes, links, lev, nodeId);
                }
            }

            Levels = lev;
        }

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Unable to get Content by ID in Controller