How to utilize service providers in Adonis v5?

[msrumon]

I need a service provider where I want to expose some methods to be used by other controllers. Right now I have stuffed all these logic inside controllers, making the controllers like 500-600 lines each and lots of duplicate codes all around the controllers. Due to lack of documentation, I am at a loss and unable to create providers. Say, I would like to create a PaypalProvider where I would like to have these methods: createOrder(), getOrder(), captureOrder() etc. Can someone help me please?

[thetutlage]

And why this can't live within a regular Javascript class? And then just import it inside your controller?

Yes, there aren't any docs on providers. But you can check the packages source code to get some sense of them until docs are written

[thetutlage]

Writing the code as following will also give you a singleton

class Foo {
  public bar () {}
}

export default new Foo()

Inside controller (Assuming the Foo class is in app/Services/Foo.ts file)

import Foo from 'App/Services/Foo'

Foo.bar()

[msrumon]

class Demo {
  method() {
    return 'hello world';
  }
}

export default new Foo();

Which one is correct import in this case?

// (1) import Demo from '...';
// (2) import Foo from '...';

[thetutlage]

I believe, you need spend some time learning the basics of Javascript, ESM and Typescript. All this really has nothing to do with AdonisJS at all.

• How can you instantiate Foo, when the class name is Demo
• It doesn't matter what you name the import variable, when you have used export default.

[msrumon]

Thank you. Dumb question. :D

[msrumon]

In the case of #1421 (reply in thread), import Env from '@ioc:Adonis/Core/Env' throws E_IOC_LOOKUP_FAILED error. Any suggestion?