Override 'forms/blog/save' view and delete/hide the field with 'excerpt' name in your custom view.

Thanks Nikolai for the response. 

Sorry for not explaining what I try to achieve. I am aware of the override approach :). What I try to do is calling the blog/save form excluding fields like 'Excerpt', 'Tags', etc. in the lightbox popup. But for a full view, I will leave the blog/save form as is. I am just wondering if there is a magic function in Elgg 3 to exclude input fields without overriding the original forms

I know I can simply create the forms/blog/save_with_less_fields in one of my plugin and remove unwanted fields. Then use forms/blog/save_with_less_fields form for the popup and forms/blog/save for the regular view.

No such function (

I tried this hook also but without success:

elgg_register_plugin_hook_handler('view_vars', 'forms/blog/save', function (\Elgg\Hook $hook) { });

Suggestion: in the lightbox use CSS to hide the fields ;)

Only works for non required fields

@Jerome, that's exactly what I did - using JS/CSS to hide the fields :) 

Good to know that this approach only works with non-required fields.

Thanks Jerome!

If you are using JS, you can remove the required attribute from the fields also.