Accept or Cancel Assignment Example | AI MVC System Architecture Generator

The Accept or Cancel Assignment use case is a central function in ride-hailing platforms. It shows how a driver receives a ride request, reviews passenger details, and decides whether to accept or decline the job. With the Sequence Diagram Refinement Tool, this flow can be represented in MVC architecture, helping teams visualize how the system manages real-time driver decisions and assignment handling.

Step 1 : Use Case Input

In this example, the use case focuses on the moment a driver is assigned a new ride. The driver is notified, presented with passenger and trip details, and given the choice to accept or cancel the request.

You can either:

• Enter the description manually, or
• Use the Generate with AI option, which guides you through defining the interaction step by step.

Once completed, the tool can instantly create both the Controller Class Diagram and the MVC Sequence Diagram to refine the workflow.

Step 2 : Generate MVC Architecture

i. Controller Class Diagram

Based on the use case, the tool generates a controller class diagram that captures the assignment decision logic. This view highlights how the controller interacts with the driver interface and manages request acceptance or cancellation.

Controller Class:

• AcceptOrCancelAssignmentController
  • +handleReviewDriver()
  • +displayDriverDetails()
  • +processAccept()
  • +processCancel()
  • …

The diagram can be customized in Visual Paradigm Online to match your platform’s workflow or exported as SVG for documentation and sharing.

ii. MVC Sequence Diagram

From the use case description, the tool produces an MVC sequence diagram. It maps out how the driver (Actor) receives the assignment view, how the controller processes acceptance or cancellation, and how the model updates ride status accordingly.

At this point, you can:

• Export the diagram as SVG for clear documentation
• Open it in Visual Paradigm Online to extend the flow
• Further refine it using the AI Sequence Diagram Refinement Tool