Sergey Vanyushkin
87b094220d
Complete architectural refactoring from simple MVC to Clean Architecture/DDD pattern: Domain Layer: - Add entities (Post, BaseEntity) with business logic - Add value objects (Title, Content, Slug) with validation - Add repository interfaces (PostRepository) - Add domain exceptions Application Layer: - Add use cases (CreatePost, GetPost, UpdatePost, DeletePost, ListPosts, PublishPost) - Add DTOs for data transfer - Add TransactionManager interface Infrastructure Layer: - Add SQLAlchemy models and async database connection - Add SQLAlchemyPostRepository implementation - Add Dishka DI container with providers - Add error handlers and middleware Presentation Layer: - Add FastAPI routes with Dishka integration - Add Pydantic schemas - Add dependency injection using FromDishka[T] Other Changes: - Remove old flat structure (api/, common/, core/, modules/) - Add hatchling build system for package scripts - Add blog CLI command - Update AGENTS.md with new architecture docs - All 48 tests passing, mypy clean, ruff clean
24 lines
773 B
Python
24 lines
773 B
Python
"""Title value object."""
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from dataclasses import dataclass
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from app.domain.value_objects.base import ValueObject
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@dataclass(frozen=True, slots=True)
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class Title(ValueObject[str]):
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"""Blog post title value object."""
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MIN_LENGTH: int = 3
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MAX_LENGTH: int = 200
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def _validate(self) -> None:
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if not isinstance(self.value, str):
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raise ValueError("Title must be a string")
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if len(self.value) < self.MIN_LENGTH:
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raise ValueError(f"Title must be at least {self.MIN_LENGTH} characters")
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if len(self.value) > self.MAX_LENGTH:
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raise ValueError(f"Title must be at most {self.MAX_LENGTH} characters")
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if not self.value.strip():
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raise ValueError("Title cannot be empty or whitespace")
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