What Is Multi-Context Binding?

Instead of duplicating code across multiple views or models, JCB lets you:

• Define a Custom Code entity once.
• Assign it to multiple contexts like:

• ⌨️ Controller: After save hook in multiple views
• 📦 Model: addTablePath override across components
• 🖼️ View: inject JS or HTML output snippets
• 🧠 Field: reuse a validator across multiple fields
• 📄 Templates: central render or markup logic
• 📚 Snippets: shared logic for tables or charts

Each of these locations can reference the same centralized logic block, which is injected dynamically during the compile phase using insert/replace tags or placeholders.

This ensures consistency across your logic and makes updates and maintenance easier — edit one block, and it affects all bindings safely.

Examples of Contexts

• ⌨️ Controller: After save hook in multiple views
• 📦 Model: addTablePath override across components
• 🖼️ View: inject JS or HTML output snippets
• 🧠 Field: reuse a validator across multiple fields
• 📄 Templates: central render or markup logic
• 📚 Snippets: shared logic for tables or charts

Key Features

• 🧠 Write Once, Use Everywhere: Define your logic once and reuse it throughout your component architecture.
• 🎯 Targeted Injection Points: Bind to specific phases of the MVC lifecycle or visual display system (before display, after render, etc.).
• 🔁 Central Update, Global Effect: Update a single code block to affect all places it’s injected — with optional visual diff safety on compile.
• 📦 Component-Wide Scope: Multi-context code blocks can span admin and site views, templates, and even CLI or custom libraries.
• 🛡️ Namespace Safe: If needed, JCB allows context-aware resolution to avoid naming collisions between reused logic blocks.

Use Cases

• A universal helper function injected into several models
• A block of JS injected into multiple layouts or templates
• A form field override applied to many views
• A shared AJAX handler used by both admin and site views

Why It Matters

• ✅ Eliminates Code Duplication: Avoid redundant logic scattered across multiple files.
• ✅ Improves Maintainability: Updates happen in one place — no need to hunt through dozens of views or templates.
• ✅ Enhances Logic Portability: You can extract, export, or import Custom Code blocks easily between projects.
• ✅ Enables Large-Scale Scaling: As your components grow, you maintain a clean and modular code structure.

Conclusion

Multi-context binding is what turns JCB’s Custom Code system from a code injection tool into a true reusable logic engine. It brings modularity, clarity, and DRY principles to Joomla development — with complete control over how and where your logic flows. Define once, bind anywhere, maintain effortlessly.

Summary

JCB allows you to bind a single reusable Custom Code block to multiple locations (contexts) across your component — ensuring DRY (Don't Repeat Yourself) logic while offering complete control over where and how that logic is injected during compilation.