NP.Lti13Platform.AssignmentGradeServices 1.0.0-preview003

NP.Lti13Platform.AssignmentGradeServices

The IMS Assignment and Grade Services spec defines a way that tools can platforms can communicate grades back and forth. This project provides an implementation of the spec.

Features

• Gets,creates, updates, and deletes line items
• Gets and creates grades

Getting Started

1. Add the nuget package to your project:

2. Add an implementation of the ILti13AssignmentGradeDataService interface:

public class DataService: ILti13AssignmentGradeDataService
{
    ...
}

3. Add the required services.

builder.Services
    .AddLti13PlatformCore()
    .AddLti13PlatformAssignmentGradeServices()
    .WithLti13AssignmentGradeDataService<DataService>();

4. Setup the routing for the LTI 1.3 platform endpoints:

app.UseLti13PlatformAssignmentGradeServices();

ILti13AssignmentGradeDataService

There is no default ILti13AssignmentGradeDataService implementation to allow each project to store the data how they see fit.

The ILti13AssignmentGradeDataService interface is used to manage the persistance of line items and grades.

All of the internal services are transient and therefore the data service may be added at any scope (Transient, Scoped, Singleton).

Defaults

Routing

Default routes are provided for all endpoints. Routes can be configured when calling UseLti13PlatformAssignmentGradeServices().

app.UseLti13PlatformAssignmentGradeServices(config => {
    config.LineItemsUrl = "/lti13/{deploymentId}/{contextId}/lineItems"; // {deploymentId} and {contextId} are required
    config.LineItemUrl = "/lti13/{deploymentId}/{contextId}/lineItems/{lineItemId}"; // {deploymentId}, {contextId}, and {lineItemId} are required
    return config;
});

ILti13AssignmentGradeConfigService

The ILti13AssignmentGradeConfigService interface is used to get the config for the assignment and grade service. The config is used to tell the tools how to request the members of a context.

There is a default implementation of the ILti13AssignmentGradeConfigService interface that uses a configuration set up on app start. It will be configured using the IOptions pattern and configuration. The configuration path for the service is Lti13Platform:AssignmentGradeServices.

Examples:

{
    "Lti13Platform": {
        "AssignmentGradeServices": {
            "ServiceAddress": "https://<mysite>"
        }
    }
}

builder.Services.Configure<ServicesConfig>(x => { });

The Default implementation can be overridden by adding a new implementation of the ILti13AssignmentGradeConfigService interface. This may be useful if the service URL is dynamic or needs to be determined at runtime.

builder.AddLti13PlatformCore()
    .AddLti13PlatformAssignmentGradeServices()
    .WithLti13AssignmentGradeConfigService<ConfigService>();

Configuration

ServiceAddress

The base url used to tell tools where the service is located.