Validating query params in the model hook

adapters.adapter.js

import Adapter from "ember-data/adapters/json-api";

export default Adapter.extend();

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: ['booking'],
  booking: null
});

initializers.pretender.js

export function returnJSON(status, body) {
  return json(...arguments);
};

export function json(status, body) {
  if (arguments.length === 1) {
    body = status;
    status = 200;
  }
  
  return [
    status,
    { "Content-Type": "application/json" },
    JSON.stringify(body)
  ];
};

export const server = new Pretender();

export function initialize() {
  server.handledRequest = function(verb, path, request) {
    console.log(`handled request to ${verb} ${path}`);
  }

  server.unhandledRequest = function(verb, path, request) {
    console.log(`undhandled request ${verb} ${path}`);
  }
};

export default {
  name: 'pretender',
  initialize
};

models.booking.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  start: attr()
});

routes.application.js

import Ember from 'ember';
import { server, json } from '../initializers/pretender';

const { isPresent } = Ember;

server.map(function() {
  this.get('/bookings/1', function() {
    return json({
      data: {
        type: 'booking',
        id: 1,
        attributes: {
          start: '2017-10-22'
        }
      }
    });
  });
  this.get('/bookings/2', function() {
    return json({
      data: {
        type: 'booking',
        id: 2,
        attributes: {
          start: '2017-10-23'
        }
      }
    });
  });
});

export default Ember.Route.extend({
  queryParams: {
    booking: {
      refreshModel: true
    }
  },
  
  model(params) {
    if (isPresent(params.booking)) {
    	return this.store.findRecord('booking', params.booking);
    }
    this.transitionTo({ queryParams: { booking: 1 } });
  }
});

serializers.serializer.js

Name: {{model.start}}

templates.application.hbs

{{#link-to "application" (query-params booking="1")}}Booking one{{/link-to}}<br>
{{#link-to "application" (query-params booking="2")}}Booking two{{/link-to}}
<br>
<br>
Start date: {{model.start}}

tests.helpers.destroy-app.js

import Ember from 'ember';

export default function destroyApp(application) {
  Ember.run(application, 'destroy');
}

tests.helpers.resolver.js

import Resolver from '../../resolver';
import config from '../../config/environment';

const resolver = Resolver.create();

resolver.namespace = {
  modulePrefix: config.modulePrefix,
  podModulePrefix: config.podModulePrefix
};

export default resolver;

tests.helpers.start-app.js

import Ember from 'ember';
import Application from '../../app';
import config from '../../config/environment';

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.test-helper.js

import resolver from './helpers/resolver';
import {
  setResolver
} from 'ember-qunit';

setResolver(resolver);

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0",
    "route-recognizer": "https://rawgit.com/tildeio/route-recognizer/56f5fcec6ae58d8e86b5dc77609809fb91198142/dist/route-recognizer.js",
    "FakeXMLHttpRequest": "https://rawgit.com/pretenderjs/FakeXMLHttpRequest/23c3a96b5b24f1bfe595867437e4f128a29c2840/fake_xml_http_request.js",
    "pretender": "https://rawgit.com/pretenderjs/pretender/c6de9afe18b1472aded2592f5a80ad9a26a0e262/pretender.js"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}