winidjango 2.0.20

A utils package for django

winidjango

A production-ready Django utilities library that simplifies complex database operations and provides structured patterns for data management tasks.

Table of Contents

• Features
• Installation
• Quick Start
• Documentation
• Requirements
• Development
• Testing
• Contributing
• License

Features

🚀 High-Performance Bulk Operations

• Multithreaded Processing: Parallel execution of database operations for maximum speed
• Automatic Chunking: Configurable batch sizes (default: 1000) for memory-efficient processing
• Transaction Safety: Atomic operations with intelligent transaction management
• Dependency Resolution: Automatic topological sorting for foreign key relationships

🛠️ Database Utilities

• Bulk Create/Update/Delete: Process thousands of records efficiently
• Deletion Simulation: Preview cascade effects before executing destructive operations
• Bulk Comparison: Detect differences between datasets with field-level hashing
• Raw SQL Execution: Safe parameter binding with automatic cursor management

📦 Model Utilities

• BaseModel: Abstract base with created_at, updated_at, and type-safe meta property
• Topological Sorting: Automatic dependency ordering for model operations
• Field Introspection: Type-safe utilities for working with model fields

🎯 Management Command Framework

• ABCBaseCommand: Template method pattern with automatic logging
• ImportDataBaseCommand: Structured data import with Polars integration
• Built-in Arguments: Standard options for dry-run, batch size, threading, and more
• Type Safety: Full type hints with abstract method enforcement

Installation

pip install winidjango

Or using uv:

uv add winidjango

Quick Start

Bulk Operations

from winidjango.src.db.bulk import bulk_create_in_steps

# Create 10,000 records in batches of 1000
authors = [Author(name=f"Author {i}") for i in range(10000)]
created = bulk_create_in_steps(Author, authors, step=1000)

Automatic Dependency Resolution

from winidjango.src.db.bulk import bulk_create_bulks_in_steps

# Create related models in correct order automatically
results = bulk_create_bulks_in_steps({
    Author: authors,
    Book: books,      # Created after Author
    Review: reviews,  # Created after Book
})

Deletion Simulation

from winidjango.src.db.bulk import simulate_bulk_deletion

# Preview what would be deleted
deletion_preview = simulate_bulk_deletion(Author, authors_to_delete)
print(f"Would delete {len(deletion_preview[Author])} authors")
print(f"Would cascade delete {len(deletion_preview[Book])} books")

Custom Management Command

from winidjango.src.commands.base.base import ABCBaseCommand
from argparse import ArgumentParser

class MyCommand(ABCBaseCommand):
    def add_command_arguments(self, parser: ArgumentParser) -> None:
        parser.add_argument('--input-file', type=str, required=True)

    def handle_command(self) -> None:
        input_file = self.get_option('input_file')
        dry_run = self.get_option('dry_run')  # Built-in

        if dry_run:
            self.stdout.write('Dry run mode')

        # Your logic here

Data Import Command

from winidjango.src.commands.import_data import ImportDataBaseCommand
import polars as pl

class ImportUsersCommand(ImportDataBaseCommand):
    def handle_import(self) -> pl.DataFrame:
        return pl.read_csv("users.csv")

    def get_cleaning_df_cls(self) -> type[CleaningDF]:
        return MyCleaningDF

    def get_bulks_by_model(self, df: pl.DataFrame) -> dict[type[Model], Iterable[Model]]:
        users = [User(name=row["name"]) for row in df.iter_rows(named=True)]
        return {User: users}

Documentation

Comprehensive documentation is available in the docs/ directory:

• Database Utilities - Bulk operations, model utilities, and SQL helpers
• Management Commands - Command framework and data import patterns
• API Reference - Complete API documentation

Requirements

• Python: 3.12+
• Django: Compatible with modern Django versions
• Dependencies:
  • django
  • django-stubs-ext
  • winiutils

Development

Setup

# Clone the repository
git clone https://github.com/Winipedia/winidjango.git
cd winidjango

# Install dependencies
uv sync

# Install pre-commit hooks
pre-commit install

Code Quality

This project uses:

• mypy: Strict type checking
• ruff: Linting and formatting
• bandit: Security analysis
• pytest: Testing framework

# Run type checking
mypy .

# Run linting
ruff check .

# Run security checks
bandit -r winidjango

# Format code
ruff format .

Testing

# Run all tests
pytest

# Run with coverage
pytest --cov=winidjango

# Run specific test file
pytest tests/test_winidjango/test_src/test_db/test_bulk.py

Contributing

Contributions are welcome! Please feel free to submit a Pull Request. For major changes, please open an issue first to discuss what you would like to change.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• Built with pyrig - Python project scaffolding tool
• Integrates with winiutils - General Python utilities

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