Ajax query passes incorrect urn when admin mounted on sub fastapi app about sqladmin

[IBestuzhev]

I encountered a very similar issue: we use FastAPI.root_path parameter because app is running behind a proxy.

I think the most correct way is to rely on FastAPI resolver - call fastapi.Request.url_for.

Meanwhile, I did a quick workaround in my project:

        admin = Admin(
            app,
            engine,
            authentication_backend=auth_backend,
            base_url='/admin-ui',
        )
        admin.add_view(view)
        if view.is_model and app.root_path:
            # This URL goes directly into template into Select2 widget
            # With current code (sqladmin 0.16.1) it goes as is
            # The URL will be: /admin-ui/my-model/ajax/lookup
            # But the correct one for production is prefixed
            # /proxy-prefix/admin-ui/my-model/ajax/lookup
            view.ajax_lookup_url = app.root_path + view.ajax_lookup_url

[infanasotku]

@IBestuzhev yes, it works.

[aminalaee]

@IBestuzhev But the Request.url_for is not available in this context.