How can I get HttpContext inside an abstract class in ASPNETCore - asp.net-core

Question

I have the following Repository:
public class TestRepository : WebCaller<Data>, ITestRepository
{
string connString = this.GetConnectionString();
.... some code here
}
In my Repository I can do Dependency Injection to the constructor without a problem.
In my abstract class WebCaller I need to get access to HttpContext somehow, I was reading that you can Inject IHttpContextAccessor to get access to the context, but because this is an Abstract class, that also lives outside the Web project, I can't have a constructor.
I was trying to do this:
public abstract class WebCaller<T> : WebRequest, IDisposable
{
//[Inject]
public ITestRepository TestRepo
{
get
{
return this.HttpContext.RequestServices.GetRequiredService<ITestRepository >();
}
}
..... more code here
}
Was trying to use Inject attribute but was reading that is no longer available, so should be other way to pass HttContext to the abstract class.

Answer 1

You can have a constructor on your abstract class. Just inject IHttpContextAccessor to it. Then any derived class will also take IHttpContextAccessor and pass it to its base constructor (your abstract class constructor). You can make the abstract class constructor protected.
Like:
public abstract class WebCaller<T> : WebRequest, IDisposable
{
protected WebCaller(IHttpContextAccessor contextAccessor)
{
}
}
public class TestRepository : WebCaller<Data>, ITestRepository
{
public TestRepository(IHttpContextAccessor contextAccessor) : base(contextAccessor)
{
}
string connString = this.GetConnectionString();
.... some code here
}