37 lines
2.2 KiB
Python
37 lines
2.2 KiB
Python
Here's the `posts.py` file for the `app/api/v1/models/` directory in the `blog_app_igblf` FastAPI backend project, defining a SQLAlchemy model for posts:
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from sqlalchemy import Column, Integer, String, Text, ForeignKey
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from sqlalchemy.orm import relationship
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from sqlalchemy.sql.sqltypes import TIMESTAMP
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from sqlalchemy.sql import func
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from app.db import Base
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class Post(Base):
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__tablename__ = "posts"
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id = Column(Integer, primary_key=True, index=True)
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title = Column(String, nullable=False)
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content = Column(Text, nullable=False)
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created_at = Column(TIMESTAMP, server_default=func.now())
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updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())
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user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
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user = relationship("User", back_populates="posts")
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def __repr__(self):
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return f"Post(id={self.id}, title='{self.title}', content='{self.content[:20]}...')"
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Explanation:
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3. The following columns are defined for the `Post` model:
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- `id`: An auto-incrementing primary key column of type `Integer`.
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- `title`: A non-nullable `String` column for the post title.
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- `content`: A non-nullable `Text` column for the post content.
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- `created_at`: A `TIMESTAMP` column that defaults to the current time when a new row is inserted.
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- `updated_at`: A `TIMESTAMP` column that defaults to the current time when a new row is inserted and updates to the current time whenever the row is updated.
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- `user_id`: A non-nullable `Integer` column that acts as a foreign key referencing the `id` column of the `users` table.
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4. The `user` attribute is defined as a SQLAlchemy relationship to the `User` model, which is assumed to be defined in another file (e.g., `app/api/v1/models/users.py`). The `back_populates` parameter specifies the name of the attribute on the `User` model that should be used for the reverse relationship.
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Note: This code assumes that you have already set up the necessary database connection and defined the `Base` class in the `app/db.py` file. Additionally, you'll need to create the `users` table and define the `User` model in a separate file (e.g., `app/api/v1/models/users.py`) to establish the relationship between posts and users. |