Application

The application module of AdonisJS is responsible for booting the app in different known environments.

When you start the HTTP server from the server.ts file or run the node ace serve command, the application is booted for the web environment.

Whereas running the node ace repl command boots the application in the repl environment. All other commands boot the application in the console environment.

The environment of the application plays an essential role in deciding which actions to perform. For example, The web environment does not register or boot the Ace providers.

You can access the current environment of the application using the environment property. Following is the list of known application environments.

• web environment refers to the process started for the HTTP server.
• console environment refers to the Ace commands except for the REPL command.
• repl environment refers to the process started using node ace repl command.
• test environment referes to the process started using the node ace test command.

import Application from '@ioc:Adonis/Core/Application'
console.log(Application.environment)

Boot lifecycle

Following is the boot lifecycle of the application.

You can access the IoC container bindings once the application state is set to booted or ready. An attempt to access the container bindings before the booted state results in an exception.

For example, if you have a service provider who wants to resolve the container's bindings, you should write the import statements inside the boot or the ready methods.

import { ApplicationContract } from '@ioc:Adonis/Core/Application'
import Route from '@ioc:Adonis/Core/Route'

export default class AppProvider {
  constructor(protected app: ApplicationContract) {}

  public async boot() {
    Route.get('/', async () => {})
  }
}

import { ApplicationContract } from '@ioc:Adonis/Core/Application'

export default class AppProvider {
  constructor(protected app: ApplicationContract) {}

  public async boot() {
    const { default: Route } = await import('@ioc:Adonis/Core/Route')
    Route.get('/', async () => {})
  }
}

Version

You can access the application and the framework version using the version and adonisVersion properties.

The version property refers to the version inside the package.json file of your app. The adonisVersion property refers to the installed version of the @adonisjs/core package.

import Application from '@ioc:Adonis/Core/Application'

console.log(Application.version!.toString())
console.log(Application.adonisVersion!.toString())

Both the version properties are represented as an object with the major, minor, and the patch sub-properties.

console.log(Application.version!.major)
console.log(Application.version!.minor)
console.log(Application.version!.patch)

Node environment

You can access the node environment using the nodeEnvironment property. The value is a reference to the NODE_ENV environment variable. However, the value is further normalized to be consistent.

import Application from '@ioc:Adonis/Core/Application'

console.log(Application.nodeEnvironment)

Also, you can make use of the following properties as a shorthand to know the current environment.

inProduction

Application.inProduction

// Same as
Application.nodeEnvironment === 'production'

inDev

Application.inDev

// Same as
Application.nodeEnvironment === 'development'

inTest

Application.inTest

// Same as
Application.nodeEnvironment === 'test'

Make paths to project directories

You can make use of the Application module to make an absolute path to known project directories.

configPath

Make an absolute path to a file inside the config directory.

Application.configPath('shield.ts')

publicPath

Make an absolute path to a file inside the public directory.

Application.publicPath('style.css')

databasePath

Make an absolute path to a file inside the database directory.

Application.databasePath('seeders/Database.ts')

migrationsPath

Make an absolute path to a file inside the migrations directory.

Application.migrationsPath('users.ts')

seedsPath

Make an absolute path to a file inside the seeds directory.

Application.seedsPath('Database.ts')

resourcesPath

Make an absolute path to a file inside the resources directory.

Application.resourcesPath('scripts/app.js')

viewsPath

Make an absolute path to a file inside the views directory.

Application.viewsPath('welcome.edge')

startPath

Make an absolute path to a file inside the start directory.

Application.startPath('routes.ts')

tmpPath

Make an absolute path to a file inside the application tmp directory.

Application.tmpPath('uploads/avatar.png')

makePath

Make an absolute path from the root of the application.

Application.makePath('app/Middleware/Auth.ts')

Other properties

Following is the list of properties on the application module.

appName

Name of the application. It refers to the name property inside the package.json file of your application.

Application.appName

appRoot

Absolute path to the application root directory.

Application.appRoot

rcFile

Reference to the parsed AdonisRc file .

Application.rcFile.providers
Application.rcFile.raw

container

Reference to the IoC container instance.

Application.container

helpers

Reference to the helper's module.

Application.helpers.string.snakeCase('helloWorld')

You can also access the helpers module directly.

import { string } from '@ioc:Adonis/Core/Helpers'

string.snakeCase('helloWorld')

logger

Reference to the application logger.

Application.logger.info('hello world')

You can also access the logger module directly.

import Logger from '@ioc:Adonis/Core/Logger'

Logger.info('hello world')

config

Reference to the config module.

Application.config.get('app.secret')

You can also access the config module directly.

import Config from '@ioc:Adonis/Core/Config'

Config.get('app.secret')

env

Reference to the env module.

Application.env.get('APP_KEY')

You can also access the env module directly.

import Env from '@ioc:Adonis/Core/Env'

Env.get('APP_KEY')

isReady

Find if the application is in the ready state. It is used internally to stop accepting new HTTP requests when isReady is false.

Application.isReady

isShuttingDown

Find if the application is in the shutdown process.

Application.isShuttingDown