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Shopify + Laravel Custom Integration
GreenLeaf Wholesale Supplies needed their customer-facing Shopify storefront to work seamlessly with a custom Laravel backend that handled inventory across three warehouses, B2B tiered pricing, and management reporting. We built a robust integration layer using Shopify webhooks and a custom REST API, giving the client a unified system that combined Shopify's checkout experience with Laravel's flexibility for complex business logic.
Challenges
- Inventory was managed manually across three warehouse locations using spreadsheets, leading to frequent overselling and fulfillment delays when stock levels were not synchronized with Shopify.
- The client needed B2B tiered pricing that Shopify does not natively support well, including volume discounts, customer-group-specific pricing, and net-30 payment terms for approved accounts.
- Order data lived in Shopify while financial reporting and supplier purchase orders were tracked in a separate system, creating data silos and double-entry errors.
- Shopify's webhook delivery is not guaranteed, so the integration needed to handle missed events, retries, and data reconciliation without manual intervention.
Our Solution
- Built a Laravel backend with a multi-warehouse inventory module that syncs bidirectionally with Shopify via REST API, updating stock levels in near real-time as orders are placed and shipments are received.
- Developed a B2B pricing engine in Laravel that applies customer-group discounts and volume tiers, pushing adjusted prices to Shopify via draft orders and a custom storefront script.
- Created a Vue.js admin dashboard within the Laravel application for real-time reporting, including sales analytics, inventory turnover rates, and automated low-stock alerts with reorder suggestions.
- Implemented a webhook queue system with idempotent processing, automatic retry logic, and a scheduled reconciliation job that catches any events missed during Shopify outages.
- Added a supplier purchase order module that automatically generates POs when inventory drops below configurable thresholds, sending them directly to suppliers via email.
Results
- Overselling incidents dropped from an average of 15 per week to zero within the first month after the inventory sync went live.
- B2B order volume increased by 75% after launching tiered pricing, as wholesale customers could self-serve orders instead of calling for custom quotes.
- Monthly reporting time was reduced from 12 hours of manual data compilation to a single dashboard view generated in real time.
- The automated purchase order system reduced average restocking lead time by 3 days, improving fulfillment rates to 98.5%.
- The client processed over $1.2 million in orders through the integrated system in the first six months with zero data discrepancies between Shopify and the Laravel backend.
Project Details
- Client
- GreenLeaf Wholesale Supplies
- Duration
- 14 weeks
- Category
- Custom Integration
Technologies Used
ShopifyLaravelPHPREST APIMySQLVue.jsWebhooks
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