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Data Context Interaction

https://en.wikipedia.org/wiki/Data,_context_and_interaction https://habrahabr.ru/post/151169/

Development

Now package in development.

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Installation

npm install --save dci.js

Usage

Use with node >= 4

const { context } = require('dci.js');

class Actor {
  foo(data) {
    // this == user1
    this.bar(data);
  }
}

class Actor2 {
  zee(data) {
    // this == user2
    this.gii(data + "a");
  }
}

class ExampleContextClass {
  doFeature(data) {
    const res1 = this.theActor1.foo(data.a);
    const res2 = this.theActor2.zee(data.b);

    return res1 && res2;
  }
}

var ExampleContext = module.exports = context(['theActor1', 'theActor2'], Actor, Actor2)(ExampleContextClass);

// In another file. Ex. controller

class ExampleController {
  action(req, res) {
    const user1 = User.find(1);
    const user2 = User.find(2);

    const result = ExampleContext.create(user1, user2)
      .doFeature({ a: req.body.first, b: req.body.second });

    res.json({
      success: result,
    });
  }
}

Babel

For babel or another transpiler you can use decorators. For babel: babel-plugin-syntax-decorators and babel-plugin-transform-decorators-legacy

import { context } from 'dci.js';

class Actor {
  foo(data) {
    this.bar(data);
  }
}

class Actor2 {
  zee(data) {
    this.gii(data + "a");
  }
}

@context(['theActor1', 'theActor2'], Actor, Actor2)
export default class ExampleContext {
  doFeature(data) {
    const res1 = this.theActor1.foo(data.a);
    const res2 = this.theActor2.zee(data.b);

    return res1 && res2;
  }
}