Change data in context on ModelView before template rendering

[sergey-vasiliev-dualboot]

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Is your feature related to a problem? Please describe.

I want to add some information on the Details page. So, for easy templating, I use ModelView and a custom template. But I didn't find a way to add some additional data to this template.
I saw I can use BaseView, but it's not good because I must duplicate some of the methods that already exist in ModelView.

Describe the solution you would like.

I would like to write some internal perform methods to edit or add some data to the context before the template is rendered

Describe alternatives you considered

No response

Additional context

No response