update content of block inside block list on save - Using Umbraco and getting started

Markus Johansson 1938 posts 5866 karma points MVP 2x c-trib

Apr 04, 2022 @ 14:50

Update content of "Block" inside Block List on save

I'm trying to update the content of a Rich Text Editor inside a blocklist using a "ContentSavingNotification"-handler `INotificationHandler

I've managed to get my hands on the content but the changes that I make are not persisted.

I looks something like this:

foreach (var entity in notification.SavedEntities) {

foreach (var property in entity.Properties)
{
    if (property.PropertyType.PropertyEditorAlias == "Umbraco.BlockList")
    {

        string rawJson = property.GetValue().ToString();

        BlockValue blockValue = JsonConvert.DeserializeObject<BlockValue>(rawJson);

        foreach (var column in blockValue.ContentData)
        {
            foreach (var columnProperty in column.RawPropertyValues)
            {
                // this contains other blocks
                var block = JsonConvert.DeserializeObject<BlockValue>(columnProperty.Value.ToString());

                if (block == null)
                    continue;

                foreach (var blockData in block.ContentData)
                {
                    foreach (var blockProperty in blockData.RawPropertyValues)
                    {
                        if (blockProperty.Key == "body")
                        {
                            blockData.RawPropertyValues["body"] =
                                new HtmlInputCleaner().CleanUp(blockProperty.Value.ToString());
                        }
                    }
                }

            }
        }
    }
}

}

Anyone that has managed to do this? I guess the process is simular for Nested Content and the Block List Editor?

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Markus Johansson 1938 posts 5866 karma points MVP 2x c-trib

Apr 04, 2022 @ 15:04

Ohh... I forgot =D Any changes that I make to the object graph after DeSerializing to Json needs to be serialized back again =D

Here is a working example:

public class RichTextEditorCleanupOnSaveHandler : 
INotificationHandler<ContentSavingNotification>
{
public void Handle(ContentSavingNotification notification)
{

    foreach (var entity in notification.SavedEntities)
    {

        foreach (var property in entity.Properties)
        {
            if (property.PropertyType.PropertyEditorAlias == "Umbraco.BlockList")
            {

                string rawJson = property.GetValue().ToString();

                BlockValue blockValue = JsonConvert.DeserializeObject<BlockValue>(rawJson);

                foreach (var column in blockValue.ContentData)
                {
                    foreach (var columnProperty in column.RawPropertyValues)
                    {
                        // this contains other blocks
                        var block = JsonConvert.DeserializeObject<BlockValue>(columnProperty.Value.ToString());

                        if(block == null)
                            continue;

                        foreach (var blockData in block.ContentData)
                        {
                            foreach (var blockProperty in blockData.RawPropertyValues)
                            {
                                if (blockProperty.Key == "body")
                                {

                                    blockData.RawPropertyValues["body"] = new HtmlInputCleaner().CleanUp(blockProperty.Value.ToString());
                                }
                            }
                        }

                        column.RawPropertyValues[columnProperty.Key] = JsonConvert.SerializeObject(block);

                    }
                }

                property.SetValue(JsonConvert.SerializeObject(blockValue));

            }
        }

    }
}
}

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Baz 3 posts 73 karma points

Jul 25, 2024 @ 18:15

I tried this implementation in v14.1 and got an error during the deserialization of the blocklist.

BlockValue blockValue = JsonConvert.DeserializeObject<BlockValue>(rawJson);

enter image description here

Is this a bug?

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Biagio Paruolo 1619 posts 1912 karma points c-trib

Jul 26, 2024 @ 05:53

Try this:

 var pu = _publishedContentQuery.Content(5686);
        IEnumerable<BlockListItem> lista = new List<BlockListItem>();
        lista = (IEnumerable<BlockListItem>)pu.GetProperty("righePreventivo").GetValue();
        var listaaa = lista.Select(x => x.Content);

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Update content of "Block" inside Block List on save