ember-async-await-for-each

ember-async-await-for-each is built and maintained by Ship Shape. Contact us for Ember.js consulting, development, and training for your project.

async/await aware forEach for Ember. Concept taken from this great article on async/await in forEach.

Compatibility

• Ember.js v3.4 or above
• Ember CLI v2.13 or above
• Node.js v8 or above

Installation

ember install ember-async-await-for-each

Usage

First you will want to import asyncForEach

import asyncForEach from 'ember-async-await-for-each';

You can then use it inside of any async functions and await its result. An example of how you could use it to save addresses for a person model is below.

const saveAddresses = async () => {
  await asyncForEach(person.get('addresses').toArray(), async (address) => {
    const address = await person.get('address');
 
    if (address.get('isDirty')) {
      return await address.save();
    }
  });
};
 
saveAddresses();

You can continue to wrap this in other async functions as well.

const doOtherAsyncStuff = async () => {
  await saveAddresses();
  await otherFunction();
  // etc
};

Serial vs parallel execution

asyncForEach resolves the callbacks in a serial fashion. This means that it waits until a callback is fully resolved before moving onto the next element in the list.

To launch all callbacks in parallel, you would have to do something like below instead:

import { all } from 'rsvp';
 
const saveAddressesParallel = async () => {
  await all(person.get('addresses').toArray().map(async (address) => {
    const address = await person.get('address');
 
    if (address.get('isDirty')) {
      return await address.save();
    }
  }));
};

Contributing

See the Contributing guide for details.

License

This project is licensed under the MIT License.