Summary
In this episode, we explore the principle of separation of concerns, which ties together the Model-View-Controller architecture. We learn that each component should have one clear responsibility: models handle data, views handle presentation, and controllers coordinate between them. This separation makes applications easier to maintain and grow, allowing us to modify one part without unintentionally breaking others. Understanding these boundaries helps us build more robust and scalable systems.
Transcript
Now that we have covered the three parts individually, I want to talk about the principle that ties everything together, which is separation of concerns. Separation of concerns means that each part of the application has one clear responsibility. It doesn't try to do someone else's job, which means that our model doesn't try to render a view, or a view doesn't try to fetch something from the database. They only focus on the specific tasks that we have clearly outlined in the last three videos. So this really matters because it makes our system, our application much easier to grow and to maintain. We can redesign certain elements without affecting or making changes that we are not aware of, because we know that if we change, let's say, our database structure, it's going to affect our models. We also know that we can change how our views look without touching the business logic in our controllers or models.