Value Objects in Go: Making Invalid Domain State Unrepresentable
📰 Dev.to · Gabriel Anhaia
Learn how to use Value Objects in Go to prevent invalid domain state, making your code more robust and maintainable
Action Steps
- Define a Value Object in Go to encapsulate email validation
- Use unexported fields to make invalid state unrepresentable
- Implement a constructor function to validate and create the Value Object
- Apply this pattern to other domain objects, such as money or phone number validation
- Test the Value Object to ensure it correctly prevents invalid state
Who Needs to Know This
Backend developers and software engineers can benefit from this approach to improve code quality and reduce validation errors
Key Insight
💡 Value Objects with unexported fields can make invalid state impossible to build, reducing validation errors
Share This
💡 Use Value Objects in Go to prevent invalid domain state and make your code more robust #golang #softwareengineering
Full Article
Stop scattering email and money validation across your handlers. A validated value object with unexported fields makes the invalid state impossible to build.
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