Getting data in an ember component from an API

Question

I’m trying to create a Ember service that calls an API to query data in a database. I want to create this service so I can inject a dataset (an array of objects) in various controllers, components and routes. I’m not sure if this is one of ember’s ‘best practices’ but it seems like it will solve an immediate issue while learning the framework. For this example I have a service called ‘get-data.js’ and I have a component called ‘responsive-table.js’ that i want to have access to an array of objects that I receive from my database. Should I be using a service to make a ajax request to the api every time i need this array? Should I be using ‘ember-data’ and calling to the ‘store’ and use the ‘findAll’ method? Whenever I try to call to the store and comment out the response from a ‘findAll’ I get a class object? Whats the best way to access your server data in components and controllers with ember.js and ‘ember-data’

service

// service 

import Ember from 'ember';

const {
  Service, inject: { service }, computed, run, set, get
} = Ember;

export default Service.extend({
    ajax: service(),

    usingJQueryAjax() {
        let data = $.get('/api/data').then(function(result ) {
            console.log("right here: ", result );
            return result;
        });

        return data
    }

});

componet

// component 

import Ember from 'ember';

const {
  Component, inject, get, set, $
} = Ember;

export default Component.extend({
    store: inject.service(),

    actions: {
        usingStoreDoesntWork() {
            var data = get(this, 'store').findAll('nba');
            return data; 
        },

        usingJQueryAjax() {
            var data = $.getJSON('/api/data').then(function(result) {
                console.log("Array I want to return: ", result );
            });
            return data;
        }
    }
});

Whats the best approach to get data into a component from an API ?

Steve H. Steve H. · Accepted Answer · 2017-02-07T23:42:24

Ember Components are designed to have no connection to a source of data. This increases their reusability, since all data that a component uses must be passed in.

Typically, the bridge from your server application and the Ember model is the Route. Here, you do what is necessary to retrieve data and return it in the model() hook. This is true whether or not you use Ember Data.

Your route (which is configured in router.js), will be called when necessary to get a model. Your template will have access to that via the variable model. You would then include a component in your template and pass data to the model via attributes.

Route

model() {
  // retrieve data here, using whatever technique you want.  It could be 
  // constant data or retrieved via jQuery, or the Ember Data mechanism (e.g.
  // the "store"
  return {
    someList: [1,2,3,4,5]
  };
}

Template

Here's your data:
{{list-display list=model.someList}}

Component template

<ul>
  {{#each list as |item|}}
    <li>{{item}}</li>
  {{/each}}
</ul>

The component, list-display can now display any list, so it is nicely reusable. The connection with data is made in the route template, and the data is retrieved by the Route. If you want to create a Service to retrieve data, then use the service in the Route to return data from the model() hook.

Hope this clarifies it for you.

Getting data in an ember component from an API

1 Answers

Route

Template

Component template