Which service am I to retrieve from GetRequiredService?

There is a GlobalSettings configuration class for that config section but I must be doing things incorrectly since my runtime change doesn't seem to override the appsettings.json values.

This is what DOESNT work:

        var globalSection = umbracoBuilder.Config.GetSection("Umbraco:CMS:Global").Get<GlobalSettings>();
        if (globalSection != null)
        {
            globalSection.ReservedPaths = globalSection.ReservedPaths.Replace("somevalue", "someothervalue");
            umbracoBuilder.Config.GetSection("Umbraco:CMS:Global:ReservedPaths").Value = globalSection.ReservedPaths;
        }

You can use PostConfigure method in a composer to change the settings values (this is called when the site loads and if the file is changed, and the settings reloaded).

e.g.

public class MyReservePathComposer : IComposer
{
    public void Compose(IUmbracoBuilder builder)
    {
        builder.Services.PostConfigure<GlobalSettings>(settings =>
        {
            settings.ReservedPaths = "one, two, three";
        });
    }
}

as a composer it will get wrapped into umbraco and called when the site starts.

Thanks Kevin,

I dropped in this composer class but its 'Compose' method didn't seem to get hit. I'm using Umbraco 14. I haven't used a composer before, but I thought that it would be found and registered automatically on startup. Is that correct?

is working on a reply...