Learn GRAILS with Real Code Examples

Install JDK 11+ and Groovy

Install Grails SDK via SDKMAN or direct download

Create a new project using `grails create-app myapp`

Configure `application.yml` for database and environment settings

Run `grails run-app` to start the development server

Install JDK and Groovy

Install Grails SDK

Create project via CLI

Configure database and environment

Run local server and verify setup

grails-app/conf/application.yml - main configuration

grails-app/controllers/ - controllers

grails-app/domain/ - domain classes

grails-app/services/ - services

grails-app/views/ - GSP templates

grails create-app myapp - create project

grails create-controller <name> - generate controller

grails create-domain-class <name> - generate domain class

grails run-app - start dev server

grails test-app - run tests

Message bundles for multiple languages

UTF-8 support for content

Locale switching via controllers

Pluralization and formatting supported

Integrate with external i18n libraries if needed

Accessible via web browser

Supports internationalization

GSP templates can include ARIA attributes

Forms can be made fully accessible

Testing with Spock or Selenium

GSP templates for HTML

Integrate CSS frameworks (Bootstrap/Tailwind)

Frontend bundlers (Webpack, Gradle plugins)

TagLibs for reusable UI components

Optional integration with Vue, React, or Angular

Domain classes manage persistence state

Sessions and cache store temporary state

Controllers coordinate request/response

Services encapsulate business logic

Events trigger decoupled operations

Database handled via GORM

Entities mapped to tables

Migrations handled via GORM or plugins

Caching used for performance

Logs track application activity