Laravel ERP Stock

ERP stock — items, warehouses, stock entries and the perpetual inventory ledger for the Laravel ERP ecosystem.

This package is the inventory / stock module of an ERPNext-native rebuild. It sits on top of the accounting layer: every stock movement is valued and posted to the general ledger. It depends on jeffersongoncalves/laravel-erp-core and jeffersongoncalves/laravel-erp-accounting.

Features

• Item & Warehouse masters — Items (with per-item valuation method, batch/serial flags, brand, default warehouse), a tree of warehouses each carrying its own inventory GL account, price lists, item prices, batches and serial numbers
• Perpetual Inventory Engine — A single StockLedgerService writes an immutable StockLedgerEntry per (item, warehouse) movement, keeps the live Bin balance in step and posts the net change in stock value to the general ledger
• Two valuation methods — Moving Average (a running weighted-average rate per bin) and FIFO (an ordered queue of (qty, rate) layers persisted on the bin)
• Transaction Documents — Stock entries (receipt / issue / transfer / manufacture / repack / subcontract), material requests, delivery notes, purchase receipts and stock reconciliations, all built on the core IsSubmittable lifecycle (Draft → Submitted → Cancelled)
• Immutable Ledger — stock_ledger_entries rows can never have their quantity or value impact edited or be deleted; cancellation flags the originals, writes reversing mirrors and recomputes the bin
• Negative stock guard — Outbound movements that would overdraw a bin throw a DomainException unless allow_negative_stock is enabled
• Customizable Models — Override any model via config (ModelResolver pattern); Item, Warehouse, StockLedgerEntry and Bin ship swappable contracts
• Translations — English and Brazilian Portuguese

Compatibility

Installation

composer require jeffersongoncalves/laravel-erp-stock

Publish and run the migrations (the core and accounting package migrations must be published too):

php artisan vendor:publish --tag="erp-core-migrations"
php artisan vendor:publish --tag="erp-accounting-migrations"
php artisan vendor:publish --tag="erp-stock-migrations"
php artisan migrate

Publish the config (optional):

php artisan vendor:publish --tag="erp-stock-config"

The Stock Ledger

StockLedgerService is the heart of the module and is registered as a singleton, with the accounting GeneralLedgerService injected.

use JeffersonGoncalves\Erp\Stock\Services\StockLedgerService;

app(StockLedgerService::class)->post($voucher, [
    ['item_id' => $item->id, 'warehouse_id' => $wh->id, 'actual_qty' => 10, 'incoming_rate' => 5],
    ['item_id' => $item->id, 'warehouse_id' => $wh->id, 'actual_qty' => -3],
]);

app(StockLedgerService::class)->reverse($voucher);

Each movement is signed: a positive actual_qty is inbound (valued at incoming_rate), a negative one is outbound (valued by the item's valuation method). A document implementing PostsToLedger calls these hooks automatically on submit() / cancel(), and exposes the two GL accounts the value posts against through stockGlAccounts() (PostsStockLedger).

Valuation

• Moving Average — new_value = old_value + actual_qty * incoming_rate on inbound; outbound consumes at the current valuation_rate; valuation_rate = stock_value / qty_after (guarded against divide-by-zero).
• FIFO — inbound pushes a (qty, rate) layer onto the queue persisted as JSON on the bin; outbound consumes the oldest layers first and is valued at consumed_value / qty.

Posting logic

• Purchase Receipt — inbound at the receipt rate; GL debit the inventory account / credit Stock Received But Not Billed.
• Delivery Note — outbound consuming at valuation; GL debit Cost of Goods Sold / credit the inventory account.
• Stock Entry — receipt is inbound to the target warehouse, issue is outbound from the source warehouse, transfer is both (a same-value transfer nets to zero GL impact).
• Stock Reconciliation — posts the delta between the counted target quantity and the current bin quantity.

Database Tables

All tables use the configured prefix shared across the ERP ecosystem (default: erp_): warehouses, items, price_lists, item_prices, batches, serial_nos, stock_ledger_entries, bins, stock_entries, stock_entry_details, material_requests, material_request_items, delivery_notes, delivery_note_items, purchase_receipts, purchase_receipt_items, stock_reconciliations, stock_reconciliation_items.

Testing

composer test

Changelog

Please see CHANGELOG for what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.

Credits

• Jefferson Simão Gonçalves
• All Contributors

License

The MIT License (MIT). Please see License File for more information.