django-bulk-lifecycle 0.1.50

Salesforce-style lifecycle hooks for Django bulk operations

django-bulk-lifecycle

⚡ Salesforce-style lifecycle hooks for Django bulk operations.

django-bulk-lifecycle brings a declarative, trigger-like experience to Django's bulk_create, bulk_update, and bulk_delete — including support for BEFORE_ and AFTER_ hooks, conditions, batching, and transactional safety.

✨ Features

• Declarative hook system: @hook(AFTER_UPDATE, condition=...)
• BEFORE/AFTER hooks for create, update, delete
• Salesforce-style semantics with full batch support
• Lifecycle-aware manager that wraps Django’s bulk_ operations
• Hook chaining, trigger deduplication, and atomicity
• Class-based hook handlers with DI support

🚀 Quickstart

pip install django-bulk-lifecycle

Define Your Model

from django.db import models
from django_bulk_lifecycle.manager import BulkLifecycleManager

class Account(models.Model):
    balance = models.DecimalField(max_digits=10, decimal_places=2)
    objects = BulkLifecycleManager()

Create a Trigger Handler

from django_bulk_lifecycle import hook, AFTER_UPDATE, TriggerHandler
from django_bulk_lifecycle.conditions import WhenFieldHasChanged
from .models import Account

class AccountTriggerHandler(TriggerHandler):
    @hook(AFTER_UPDATE, model=Account, condition=WhenFieldHasChanged("balance"))
    def log_balance_change(self, new_objs):
        print("Accounts updated:", [a.pk for a in new_objs])

🛠 Supported Lifecycle Events

• BEFORE_CREATE, AFTER_CREATE
• BEFORE_UPDATE, AFTER_UPDATE
• BEFORE_DELETE, AFTER_DELETE

🧠 Why?

Django’s bulk_ methods bypass signals and save(). This package fills that gap with:

• Triggers that behave consistently across creates/updates/deletes
• Scalable performance via chunking (default 200)
• Support for @hook decorators and centralized trigger classes

📦 Usage in Views / Commands

# Calls AFTER_UPDATE hooks automatically
Account.objects.bulk_update(accounts, ['balance'])

# Triggers BEFORE_CREATE and AFTER_CREATE
Account.objects.bulk_create(accounts)

🧩 Integration with Queryable Properties

You can extend from BulkLifecycleManager to support formula fields or property querying.

class MyManager(BulkLifecycleManager, QueryablePropertiesManager):
    pass

📝 License

MIT © 2024 Augend / Konrad Beck