Sergey Vanyushkin
3cf6c94da2
- PostLike domain entity (post_id, liked_by) with BaseEntity integration
- Post entity: add like_count field (default 0) and to_dict serialization
- PostRepository interface: add get_like, add_like, remove_like methods
- TogglePostLikeUseCase: toggle logic (like → unlike, unlike → like)
- PostResponseDTO/PostResponseSchema: add like_count field
- PostLikeORM model with FK to posts and cascade delete
- SQLAlchemyPostRepository: implement like query/add/remove with ORM mapping
- DI provider registration for TogglePostLikeUseCase
- API endpoint POST /api/v1/posts/{id}/like (auth required)
- Unit tests: PostLike entity, Post.like_count, TogglePostLikeUseCase (7 tests)
- API tests: POST /api/v1/posts/{id}/like (4 tests)
- Test model files: FEATURE_LIKES.md, TEST_MODEL.md updated
90 lines
3.2 KiB
Python
90 lines
3.2 KiB
Python
"""SQLAlchemy ORM models.
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This module defines the database ORM models that map to database tables.
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Models are used by repositories for data persistence.
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"""
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from datetime import UTC, datetime
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from uuid import uuid4
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from sqlalchemy import JSON, Boolean, DateTime, ForeignKey, String, Text
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from sqlalchemy.orm import Mapped, declarative_base, mapped_column, relationship
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Base = declarative_base()
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class PostORM(Base): # type: ignore[valid-type,misc]
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"""SQLAlchemy model for Blog Post.
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Database table representation of blog posts.
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Maps to the 'posts' table with all post attributes.
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Attributes:
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id: Primary key as UUID string.
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title: Post title (max 200 chars).
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content: Post content (text).
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slug: URL-friendly unique identifier.
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author_id: Author reference.
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published: Publication status flag.
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tags: JSON array of tags.
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created_at: Creation timestamp.
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updated_at: Last update timestamp.
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Example:
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>>> post = PostORM(title="Post", content="...", slug="post", author_id="user-1")
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"""
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__tablename__ = "posts"
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id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid4()))
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title: Mapped[str] = mapped_column(String(200), nullable=False)
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content: Mapped[str] = mapped_column(Text, nullable=False)
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slug: Mapped[str] = mapped_column(String(200), nullable=False, unique=True, index=True)
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author_id: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
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published: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False, index=True)
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like_count: Mapped[int] = mapped_column(default=0, nullable=False)
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likes: Mapped[list["PostLikeORM"]] = relationship(
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back_populates="post", cascade="all, delete-orphan"
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)
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tags: Mapped[list[str]] = mapped_column(JSON, default=list)
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=lambda: datetime.now(UTC),
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nullable=False,
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)
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updated_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=lambda: datetime.now(UTC),
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onupdate=lambda: datetime.now(UTC),
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nullable=False,
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)
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class PostLikeORM(Base): # type: ignore[valid-type,misc]
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"""SQLAlchemy model for PostLike.
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Database table representation of post likes.
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Maps to the 'post_likes' table tracking which users/devices liked which posts.
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Attributes:
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id: Primary key as UUID string.
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post_id: Foreign key to the liked post.
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liked_by: User ID or device identifier.
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created_at: Creation timestamp.
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"""
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__tablename__ = "post_likes"
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id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid4()))
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post_id: Mapped[str] = mapped_column(
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String(36), ForeignKey("posts.id", ondelete="CASCADE"), nullable=False, index=True
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)
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liked_by: Mapped[str] = mapped_column(String(200), nullable=False, index=True)
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=lambda: datetime.now(UTC),
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nullable=False,
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)
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post: Mapped[PostORM] = relationship(back_populates="likes")
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