API Pedidos - Estructura + Modelos

README.md

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+# API Pedidos
+
+API REST para gestionar pedidos con Python FastAPI.
+
+## Stack
+
+- **Framework:** FastAPI
+- **ORM:** SQLAlchemy
+- **Database:** PostgreSQL
+- **Migrations:** Alembic
+- **Validation:** Pydantic
+- **Testing:** pytest
+
+## Structure
+
+```
+api-pedidos/
+├── app/
+│   ├── api/          # Endpoints
+│   ├── models/       # SQLAlchemy models
+│   ├── schemas/      # Pydantic schemas
+│   ├── repositories/ # Data access layer
+│   └── core/         # Configuración
+├── tests/            # Tests unitarios
+├── alembic/          # Migraciones
+└── Dockerfile
+```
+
+## Running
+
+```bash
+pip install -r requirements.txt
+uvicorn app.main:app --reload
+```
+
+## API Endpoints
+
+- `GET /pedidos` - Listar pedidos
+- `POST /pedidos` - Crear pedido
+- `GET /pedidos/{id}` - Obtener pedido
+- `PUT /pedidos/{id}` - Actualizar pedido
+- `DELETE /pedidos/{id}` - Eliminar pedido

app/core/config.py

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+from pydantic_settings import BaseSettings
+from functools import lru_cache
+
+
+@lru_cache()
+def get_settings():
+    return BaseSettings(
+        app_name="API Pedidos",
+        database_url="postgresql://user:password@localhost:5432/pedidos",
+        debug=True
+    )

app/models/__init__.py

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+# Task Models
+from .order import Order, OrderItem, Base
+
+__all__ = ["Order", "OrderItem", "Base"]

app/models/order.py

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+from sqlalchemy import Column, String, Float, Integer, DateTime, ForeignKey
+from sqlalchemy.orm import relationship
+from sqlalchemy.ext.declarative import declarative_base
+from datetime import datetime
+
+Base = declarative_base()
+
+
+class Order(Base):
+    __tablename__ = "orders"
+
+    id = Column(Integer, primary_key=True, index=True)
+    customer_name = Column(String, nullable=False)
+    customer_email = Column(String, nullable=False)
+    status = Column(String, default="pending")
+    total = Column(Float, default=0.0)
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
+
+    items = relationship("OrderItem", back_populates="order", cascade="all, delete-orphan")
+
+
+class OrderItem(Base):
+    __tablename__ = "order_items"
+
+    id = Column(Integer, primary_key=True, index=True)
+    order_id = Column(Integer, ForeignKey("orders.id"), nullable=False)
+    product_name = Column(String, nullable=False)
+    quantity = Column(Integer, default=1)
+    price = Column(Float, nullable=False)
+    created_at = Column(DateTime, default=datetime.now)
+
+    order = relationship("Order", back_populates="items")

requirements.txt

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+fastapi==0.109.2
+uvicorn[standard]==0.27.1
+sqlalchemy==2.0.25
+alembic==1.13.1
+psycopg2-binary==2.9.9
+pydantic==2.6.1
+pydantic-settings==2.1.0
+pytest==8.0.0
+pytest-asyncio==0.23.3
+httpx==0.26.0