ASP.NET Core 2.2 - accessing the StaticFileOption RequestPath later in code - asp.net-core

Question

In Startup.cs Configure function I do something like this:
app.UseStaticFiles(new StaticFileOptions()
{
FileProvider = new PhysicalFileProvider(#"\\server\somepath\someimages"),
RequestPath = "/images"
});
Later, say in the controller, I'd like to not hard-code:
string ImageImLookingFor = "/images" + foo.jpg;
Instead I'd like to do something like:
string ImageImLookingFor = SomeObjectThatGivesMe.RequestPath + foo.jpg;
Is this possible?

Answer 1

Not entirely sure if it is possible but a workaround can be an appsettings key and read it from both locations.
ex:
in your appsettings
{
"ImagesPath" : '/images"
}
in Starup.cs
app.UseStaticFiles(new StaticFileOptions()
{
FileProvider = new PhysicalFileProvider(#"\\server\somepath\someimages"),
RequestPath = Configuration["ImagesPath"]
});
In your contorller
string ImageImLookingFor = configuration.RequestPath + foo.jpg;
You can make the configuration file a strong type and replace it with IOptions<ImageConfiguration> where ImageConfiguration is a class that has ImagesPath property

Answer 2

You could try to configure StaticFileOptions with services.Configure like
public class Startup
{
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.Configure<StaticFileOptions>(options => {
options.FileProvider = new PhysicalFileProvider(#"xxx");
options.RequestPath = "/images";
});
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
app.UseStaticFiles(app.ApplicationServices.GetRequiredService<IOptions<StaticFileOptions>>().Value);
}
}
And then access it by IOptions<StaticFileOptions> like
public class HomeController : Controller
{
private readonly StaticFileOptions _options;
public HomeController(IOptions<StaticFileOptions> options)
{
this.configuration = configuration;
_serviceProvider = serviceProvider;
_options = options.Value;
}
public IActionResult Index()
{
return Ok(_options.RequestPath);
}
}