Rayyan Group Business Suite

Four interconnected Django web applications and a central portal for Rayyan Group — covering farm management, feed distribution POS, snacks & beverages dispatch, and a bilingual group homepage with Bengali localization.
A full-stack business management suite for Rayyan Group spanning four independent Django deployments behind a shared brand portal. Rayyan Farm handles cattle tracking, milk production, health schedules, and cashbox accounting with QR-coded receipts. Rayyan Feed Store is a retail POS with FIFO inventory, buyer due tracking, supplier deposits, and daily cashbox reconciliation. Rayyan Snacks & Beverages manages SR (Sales Representative) daily dispatch, settlement, due collection allocation, and multi-company stock tracking. The Rayyan Group homepage is a vanilla HTML/CSS/JS portal with Bengali (বাংলা) localization, particle canvas animation, and 3D tilt card effects — linking all division portals under rayanagro.group subdomains. Each Django app is containerized with Docker, deployed via Coolify (self-hosted PaaS), and uses MySQL with automated Cloudflare R2 backups.
Tech Stack / Built With
Sub-Projects / Deliverables
Rayyan Farm Dashboard
Django-based farm management system handling cattle tracking with breed/shade management, milk production logging, health schedules with vaccination reminders, employee salary payments, expense tracking, and cashbox accounting with QR-coded receipts. Features 20+ models including Cow, Shade, Breed, MilkProduction, MilkSale, HealthSchedule, CompostSale, and CowTransfer. Deployed at farm.rayanagro.group with role-based access for admin, owner, and farmhand users.
Technologies

Cattle tracking with breed, shade assignment, purchase/sale lifecycle, and gestation alerts (283-day cycle)
Milk production logging with daily totals, per-cow averages, and production gap detection (7-day alert)
Health schedule management with vaccination, deworming, and treatment records
Cashbox accounting with receipt numbers (auto-incrementing PREFIX-NNNN format), balance history, and backfill commands
Employee management with salary payments, advance tracking, and leave records
Expense tracking with category breakdown, supplier payments, and compost/other sales
QR code generation on receipts via Pillow + qrcode libraries
Automated Cloudflare R2 backup with interactive restore scripts
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