ui/app/models/nodepool.js

import Resource from '@rancher/ember-api-store/models/resource';
import { reference } from '@rancher/ember-api-store/utils/denormalize';
import { cancel, later } from '@ember/runloop'
import { set, computed } from '@ember/object';
import { ucFirst } from 'shared/utils/util';

const NodePool = Resource.extend({
  type:          'nodePool',
  quantityTimer: null,

  nodeTemplate: reference('nodeTemplateId'),

  displayProvider: computed('driver', 'nodeTemplate.driver', 'intl.locale', function() {
    const intl = this.intl;
    const driver = this.driver;
    const key = `nodeDriver.displayName.${ driver }`;

    if ( intl.exists(key) ) {
      return intl.t(key);
    } else {
      return ucFirst(driver);
    }
  }),

  incrementQuantity(by) {
    let quantity = this.quantity;

    quantity += by;
    quantity = Math.max(0, quantity);

    set(this, 'quantity', quantity);

    if ( this.quantityTimer ) {
      cancel(this.quantityTimer);
    }

    var timer = later(this, function() {
      this.save().catch((err) => {
        this.growl.fromError('Error updating node pool scale', err);
      });
    }, 500);

    set(this, 'quantityTimer', timer);
  },
});

NodePool.reopenClass({
  mangleOut(data) {
    if ( data && data.hostnamePrefix ) {
      data.hostnamePrefix = data.hostnamePrefix.toLowerCase();
    }

    return data;
  }
});

export default NodePool;