Refining Object Lifecycles: Cleaning Up User Models

In the appweb_cs_2c_2024 project, we have been focusing on maintaining the integrity of our core domain objects. Recently, I performed a cleanup of our user model to improve code readability and remove unnecessary technical debt that had accumulated over time.

The Problem of Accumulation

When working with models in PHP, it is common to see utility methods or helper logic grow over time. Often, these additions aren't properly documented, leading to "ghost code"—methods that exist but serve no clear purpose in the current architecture. During my audit, I noticed several sections of our UserModel were cluttered with comments and logic that made the class difficult to navigate.

Implementing Consistent Access

One common pattern we use to manage these models is the Singleton Pattern. When a class is designed as a Singleton, it ensures that we have a single point of access to the data, which is crucial for managing application-wide state. However, the benefits of a Singleton are negated if the implementation is cluttered with dead code.

Here is how we maintain a clean Singleton structure:

class UserSession {
    private static ?UserSession $instance = null;

    private function __construct() {}

    public static function getInstance(): UserSession {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }
}

This implementation ensures the session remains a single point of truth. By stripping away redundant methods and cleaning up legacy comments, we make it easier for developers to identify where the actual business logic resides.

The Takeaway

Regularly auditing your model classes is not just about functionality; it is about cognitive load. If a piece of code is confusing or unused, remove it. A cleaner codebase is a faster, more predictable one. My advice for this week: go through your most-used service or model classes and remove any comments or methods that no longer serve a direct purpose.

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