Sergey Vanyushkin
7ff3fa0992
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Implement full comments system: domain entities (Comment, CommentLike), value objects (CommentContent), use cases (CRUD, like toggle), SQLAlchemy repository, API v1 endpoints, web UI with comment form and nested replies, i18n translations (EN/RU/FR/DE), and E2E tests. Fix nested reply (reply-to-reply) not displaying — the flat reply_comments dict was only queried for top-level comment IDs, so deeply nested replies were saved to DB (incrementing comment count) but never rendered. Switch to a recursive Jinja2 macro that renders any nesting depth.
105 lines
2.5 KiB
Python
105 lines
2.5 KiB
Python
"""DTOs for post use cases.
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This module defines Data Transfer Objects used for communication between
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application layer use cases and presentation layer. DTOs are immutable
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dataclasses that carry data across process boundaries.
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"""
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from dataclasses import dataclass
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from datetime import datetime
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from uuid import UUID
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@dataclass(frozen=True)
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class CreatePostDTO:
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"""DTO for creating a post.
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Carries post creation data from API to use case.
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Contains all required fields for post creation.
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Attributes:
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title: Post title string.
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content: Post content string.
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author_id: Identifier of the post author.
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tags: Optional list of tags for categorization.
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Example:
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>>> dto = CreatePostDTO(
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... title="My Post",
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... content="Content here...",
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... author_id="user-123",
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... tags=["python"]
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... )
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"""
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title: str
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content: str
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author_id: str
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tags: list[str] | None = None
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@dataclass(frozen=True)
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class UpdatePostDTO:
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"""DTO for updating a post.
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Carries optional post update data. All fields are optional
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allowing partial updates.
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Attributes:
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title: Optional new title.
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content: Optional new content.
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tags: Optional new tags list.
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Example:
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>>> dto = UpdatePostDTO(title="Updated Title")
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"""
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title: str | None = None
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content: str | None = None
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tags: list[str] | None = None
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@dataclass(frozen=True)
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class PostResponseDTO:
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"""DTO for post response.
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Carries complete post data for API responses.
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Includes all post attributes and metadata.
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Attributes:
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id: Unique post identifier.
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title: Post title.
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content: Post content.
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slug: URL-friendly slug.
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author_id: Author identifier.
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published: Publication status.
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tags: List 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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>>> dto = PostResponseDTO(
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... id=uuid,
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... title="Post",
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... content="...",
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... slug="post",
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... author_id="user-123",
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... published=True,
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... tags=[],
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... created_at=datetime.now(),
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... updated_at=datetime.now()
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... )
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"""
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id: UUID
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title: str
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content: str
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slug: str
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author_id: str
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published: bool
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tags: list[str]
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created_at: datetime
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updated_at: datetime
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like_count: int = 0
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comment_count: int = 0
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