I am new to using Ember and have been following an online video tutorial (see weblink below, though its dated as it uses .NET Core 1.0) that demonstrates how to setup a JSON API back-end with an Ember front-end - I am using Visual Studio Code. I have successfully completed the first video and receive responses from the JSON API back-end. However, I am unable to get the second video working by having Ember send a request to the api-back end for data retrieval. I know this because I am monitoring the calls to the server. So, while I can hit the back-end server and receive a JSON response, the front-end response is HTTP Error 404 - page not found and there is no request to the back-end.
HTTP Error:
Error: Ember Data Request GET /todo-items returned a 404
Payload (text/html; charset=utf-8)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Cannot GET /todo-items</pre>
</body>
</html>
My best guess is that changes have been made to .NET Core and Ember with respect to routing that are not covered in the videos. Unfortunately, a 404 error is very little to go on and I am unable to find the problem. Does anybody know where the problem is or how I can troubleshoot this?
Video tutorial: https://www.youtube.com/watch?v=_d53rG2i9pY&index=2&list=PLu4Bq53iqJJAo1RF0TY4Q5qCG7n9AqSZf
router.js
import EmberRouter from '@ember/routing/router';
import config from './config/environment';
const Router = EmberRouter.extend({
location: config.locationType,
rootURL: config.rootURL
});
Router.map(function() {
this.route('todo-items');
});
export default Router;
environment.js
'use strict';
module.exports = function(environment) {
let ENV = {
modulePrefix: 'todo-list-client',
environment,
rootURL: '/',
locationType: 'auto',
EmberENV: {
FEATURES: {
// Here you can enable experimental features on an ember canary build
// e.g. 'with-controller': true
},
EXTEND_PROTOTYPES: {
// Prevent Ember Data from overriding Date.parse.
Date: false
}
},
APP: {
host: 'http://localhost:5000',
namespace: 'api/v1'
}
};
if (environment === 'development') {
// ENV.APP.LOG_RESOLVER = true;
// ENV.APP.LOG_ACTIVE_GENERATION = true;
// ENV.APP.LOG_TRANSITIONS = true;
// ENV.APP.LOG_TRANSITIONS_INTERNAL = true;
// ENV.APP.LOG_VIEW_LOOKUPS = true;
}
if (environment === 'test') {
// Testem prefers this...
ENV.locationType = 'none';
// keep test console output quieter
ENV.APP.LOG_ACTIVE_GENERATION = false;
ENV.APP.LOG_VIEW_LOOKUPS = false;
ENV.APP.rootElement = '#ember-testing';
ENV.APP.autoboot = false;
}
if (environment === 'production') {
// here you can enable a production-specific feature
}
return ENV;
};
application.js
import DS from 'ember-data';
import ENV from './config/environment';
export default DS.JSONAPIAdapter.extend({
namespace: ENV.APP.namespace,
host: ENV.APP.host
})
todo-items.js
import Route from '@ember/routing/route';
export default Route.extend({
model(){
return this.store.findAll('todo-item');
}
});
Model Files:
todo-item.js
import DS from 'ember-data';
const { attr, belongsTo} = DS;
export default DS.Model.extend({
description: attr('string'),
owner: belongsTo('person')
});
person.js
import DS from 'ember-data';
const { attr, hasMany} = DS;
export default DS.Model.extend({
firstName: attr('string'),
lastName: attr('string'),
todoItems: hasMany('todo-item')
});
UPDATE 1:
API server is running on port 5000 while Ember is running on 4200.
Update 2
Server messages:
See Question&Answers more detail:
os 
