Roughly organizing entities, value objects, services, and use cases.
Well, it's related to Rails, DDD (Domain-Driven Design), and Clean Architecture. Here is a list of terms: - Entities: things identified by ID - Examples: User, Case, Order - Value Objects: things identified by their contents - Examples: Amount, Phone Number, Address, Period - Service Objects: containers for procedures - Examples: Calculating tax, uploading to S3 - Use Cases: one thing a user wants to do - Examples: Registering a case, confirming an order Entities are things identified by ID. A person is the same person even if their last name changes or they move. Conversely, even if there are two people with the same name and age, they are different people. In this way, entities are things identified not by their contents but by their ID (i.e., that they are the same thing). user = User.find(1) user.update!(name: "Suzuki") # Even if the name changes, the ID remains 1, and it's still the same user.
The article discusses software design concepts in the context of Ruby on Rails, specifically Domain-Driven Design (DDD) and Clean Architecture. It explains four key concepts: Entity, Value Object, Service Object, and Use Case. An Entity is an object identified by its ID, such as a User, while a Value Object is defined by its attributes, like a Phone Number.
Service Objects contain procedures that don't fit into a specific model, and Use Cases represent a single user action, like registering a case or confirming an order. These concepts help organize business logic and promote a structured approach to software development.
Written by urgent.news from Dev.to's report — not a translation of it. Machine-written — may contain errors; check the original before relying on it.