Core Principle
API Exception Mapping and Validation Strategy
How Cotomy treats API failures and validation through structured HTTP responses and exception mapping.
Cotomy
Core Principle
Inheritance and Composition in Business Application Design
A reflection on inheritance and composition from long-term business system development experience.
Core Principle
Standardizing CotomyPageController for Shared Screen Flows
How to standardize list-style screens with CotomyPageController-based structure.
Core Principle
The Birth of the Page Controller
Why page-level control became necessary and how the first PageController design appeared.
Core Principle
Reaching Closures to Remove Event Handlers Later
The problem of removing event handlers when closures change function identity, and the pragmatic registry solution inside Cotomy.
Core Principle
Binding Entity Screens to UI and Database Safely
Entity structure and UI controls are often bound through fragile string matching. This article explores the structural gap and Cotomy’s mitigation approach.
Core Principle
Dynamic HTML Boundaries in CotomyElement
How I handled dynamic HTML input in CotomyElement, where parsing breaks, and why the boundaries became strict.
Core Principle
The CotomyElement Constructor Is the Core
Why the constructor overloads capture my real design intent: locality, scoped CSS, and practical DOM ownership.
Core Principle
Form AJAX Standardization
Why Cotomy standardizes query-string search, AJAX submit, and shared form contracts to control long-term cost in business systems.
Core Principle
CotomyApi in Practice
How CotomyApi is used in real screens: HTTP methods, options, exception mapping, key collisions, and explicit UI updates.
