Example mixin that queries for all records using Ember data, one page at a time.

query-all-mixin.js

import Mixin from '@ember/object/mixin';
import { inject } from '@ember/service';
import { get } from '@ember/object';
import { task } from 'ember-concurrency';
const PAGE_LIMIT = 10;

// Mixin anywhere you'd like to query for all records that match
// a filter, one page at a time. This can be helpful anywhere you need
// need all records loaded, but don't want to hit the server with long
// running requests.

// export default Route.create(QueryAllMixin, {
//   model() {
//     return this.get('queryAllTask').perform('membership', {
//       filter: {
//         user: this.get('sessionUser.userId'),
//       },
//       include: [
//         'organization',
//       ].join(),
//       page: {
//         limit: 5,
//       },
//     });
//   },
// });

export default Mixin.create({
  store: inject(),

  queryAllTask: task(function * (modelName, options = {}) {
    options.page = {
      offset: 0,
      limit: get(options, 'page.limit') || PAGE_LIMIT,
    };
    return yield this.get('queryPageTask').perform(modelName, options, []);
  }),

  queryPageTask: task(function * (modelName, options, all) {
    const page = yield this.get('store').query(modelName, options);
    const records = page.toArray();

    // To handle the case where the resource isn't paginated,
    // we'll check to see if the records have previously been loaded
    if (options.page.offset === 0) {
      const isPagePreviouslyLoaded = records.every((record) => {
        return all.includes(record);
      });
      if (isPagePreviouslyLoaded) {
        return all;
      }
    }

    all.pushObjects(records);
    if (options.page.limit > records.length) {
      return all;
    } else {
      options.page.offset += options.page.limit;
      return this.get('queryPageTask').perform(modelName, options, all);
    }
  }),
});