## Changes
### 1. Fixed missing signal handler for Incoming edit (inventory/signals.py)
- Added new signal handler `update_stock_batch_on_incoming_edit()` that:
- Triggers when Incoming is edited (created=False)
- Synchronizes StockBatch with new quantity and cost_price values
- Automatically triggers cost price recalculation for the product
- Updates Stock (inventory balance) for the warehouse
- Includes proper logging and error handling
### 2. Created IncomingModelForm for editing individual incoming items (inventory/forms.py)
- New ModelForm: `IncomingModelForm` that:
- Inherits from forms.ModelForm (accepts 'instance' parameter required by UpdateView)
- Allows editing: product, quantity, cost_price, notes
- Includes validation for positive quantity and non-negative cost_price
- Filters only active products
### 3. Updated IncomingUpdateView (inventory/views/incoming.py)
- Changed form_class from IncomingForm to IncomingModelForm
- Updated imports to include IncomingModelForm
- Removed obsolete comments from form_valid method
## Architecture
When editing an Incoming item:
1. User submits form with new quantity/cost_price
2. form.save() triggers post_save signal (created=False)
3. update_stock_batch_on_incoming_edit() synchronizes StockBatch
4. StockBatch.save() triggers update_product_cost_on_batch_change()
5. Product.cost_price is recalculated with weighted average
## Problem Solved
Previously, editing an Incoming item would NOT:
- Update the related StockBatch
- Recalculate product cost_price
- Update warehouse inventory balance
- Maintain data consistency between Incoming and StockBatch
Now all these operations happen automatically through the signal chain.
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
Andrey Smakotin
65a316649b