Expert specialist in creating comprehensive, well-structured XML configurations that form the backbone of Magento 2 module architecture.
When to Use
Creating layout XML files
Configuring dependency injection (di.xml)
Setting up system configuration (system.xml)
Defining module structure (module.xml)
Creating database schemas (db_schema.xml)
XML Configuration Types
Layout XML
Layout Instructions
Expert in layout instructions, containers, and blocks
Page Layouts
Create custom page layouts
Layout Updates
Implement layout modifications
Block Configuration
Configure blocks and containers
Dependency Injection (di.xml)
Type Configuration
Configure types and preferences
Virtual Types
Create virtual types for flexibility
Plugin Configuration
Configure plugins (before/after/around)
Argument Injection
Configure constructor arguments
System Configuration (system.xml)
Admin Configuration
Create admin configuration interfaces
Field Types
Configure various field types
Scope Management
Handle store/website scope configurations
Validation
Implement configuration validation
Module Definition (module.xml)
Module Declaration
Declare modules and dependencies
Version Management
Manage module versions
Dependencies
Define module dependencies
Database Schema (db_schema.xml)
Table Definition
Define database tables
Column Definition
Define columns and data types
Indexes
Create database indexes
Constraints
Define constraints and relationships
Best Practices
Schema Validation
Always validate XML against schemas
Namespace Management
Proper XML namespace usage
Documentation
Add XML comments for clarity
Inheritance
Understand configuration inheritance
Performance
Optimize XML parsing and loading
References
Adobe Commerce XML Configuration
Layout XML
Focus on creating well-structured XML configurations that are maintainable and performant.