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
38 lines
914 B
Python
38 lines
914 B
Python
"""Base value object for DDD domain layer."""
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from abc import ABC, abstractmethod
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from dataclasses import dataclass
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from typing import Any, Generic, TypeVar
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T = TypeVar("T")
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@dataclass(frozen=True, slots=True)
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class ValueObject(ABC, Generic[T]):
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"""Base class for all value objects."""
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value: T
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def __post_init__(self) -> None:
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self._validate()
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@abstractmethod
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def _validate(self) -> None:
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"""Validate the value object. Raise ValueError if invalid."""
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...
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def __eq__(self, other: object) -> bool:
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if not isinstance(other, ValueObject):
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return False
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return bool(self.value == other.value)
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def __hash__(self) -> int:
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return hash(self.value)
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def __str__(self) -> str:
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return str(self.value)
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def to_primitive(self) -> Any:
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"""Convert value object to primitive type."""
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return self.value
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