Prepopulate alt tag when using "Insert media" toolbar button

Gustavo Quevedo asked on September 21, 2020 19:50

Hi,

I'm currently working on a Kentico 12 SP MVC site where editors can add images from the media library into a long-text property (Rich Text editor).

Is there any solution to get the alt tag prepopulated with the image title or description from the media library when using the "Insert image/media" button in the toolbar?

It seems to add the alt tag always empty and I can't even find a way to enter it within a dialog, apart from manually editing the source code.

Any help would be appreciated.

Kind regards,

Gustavo

mvc 12 media library insert image or media

Correct Answer

Gustavo Quevedo answered on October 1, 2020 16:53

Hi,

I finally contacted Kentico support who helped with a source code customisation valid for this scenario.

In the CMSApp solution I've had to edit the file \CMSModules\Content\Controls\Dialogs\Properties\HTMLMediaProperties.ascx.cs

There is the Validate() method where you can add the below within the MediaTypeEnum.Image case:

if (string.IsNullOrEmpty(txtAlt.Text))
{
   txtAlt.Text = GetAltText(OriginalUrl);
}

You can add the following code e.g. on the line 1272, right before errorMessage = errorMessage.Trim();

Please note that you would need to implement that GetAltText() method that retrieves the MediaFileInfo object by using MediaFileInfoProvider.GetMediaFileInfo()

Regards,

Gustavo

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