app/code/VendorName/ModuleName/
├── Block/
├── Controller/
├── etc/
│ ├── module.xml
│ ├── di.xml
│ ├── routes.xml
│ └── …
├── Helper/
├── Model/
├── Setup/
│ ├── InstallSchema.php
│ ├── UpgradeSchema.php
│ ├── InstallData.php
│ ├── UpgradeData.php
│ └── …
├── Ui/
│ └── component/
├── view/
│ ├── adminhtml/
│ │ ├── layout/
│ │ ├── templates/
│ │ └── …
│ └── frontend/
│ ├── layout/
│ ├── templates/
│ └── …
├── i18n/
├── Plugin/
├── Console/
├── Test/
│ ├── Unit/
│ └── Integration/
└── …
Let’s go through each directory and briefly describe its purpose:
Block: Contains PHP classes responsible for providing data and logic to the templates.
Controller: Contains PHP classes that handle user requests, process data, and generate responses.
etc: Contains module configuration files, including module.xml (module metadata), di.xml (Dependency Injection configuration), routes.xml (routing configuration), and other XML files for various purposes.
Helper: Contains PHP utility classes that provide reusable functions and methods.
Model: Contains PHP classes responsible for data storage, retrieval, and manipulation.
Setup: Contains files for module installation, upgrade scripts, and data fixtures.
Ui: Contains XML files that define user interface components for grids, forms, and list views.
view: Contains template and layout files for the frontend (frontend/) and adminhtml (adminhtml/) areas.
i18n: Contains translation files for internationalization.
Plugin: Contains PHP classes that modify or extend Magento’s core behavior using the Interception Plugin system.
Console: Contains PHP classes for creating custom command-line interface (CLI) commands.
Test: Contains unit tests (Unit/) and integration tests (Integration/) for the module.
Other directories: Depending on the module’s requirements, additional directories may be present, such as Observer/ for event observers, Api/ for custom web APIs, or Cron/ for cron job-related files.
The actual contents and structure may vary based on the specific needs of your module. However, following this general directory structure will help maintain consistency and make it easier to manage and understand the module’s components.