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HTML

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<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.js"></script>
<script src="http://builds.emberjs.com/handlebars-1.0.0.js"></script>
<script src="http://builds.emberjs.com/ember-latest.js"></script>
<script src="https://s3.amazonaws.com/builds.emberjs.com/ember-data-latest.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery-mockjax/1.5.1/jquery.mockjax.js"></script>
​
<script type="text/x-handlebars" data-template-name='index'>
    <div>
        <h1>Polymorphism experiment</h1>
        <p>Experimenting on the generic settings class for driver and cars"</p>
        <hr />
        
        
        {{#each content}}
            <table class="specCard">
                <tr>
                    <td>  
                        Driver ID: 
                    </td>
                    <td>
                        {{id}}
                    </td>
                </tr>
                
                <tr>
                    <td>  
                        Driver Name: 
                    </td>
                    <td>
                        {{name}}
                    </td>
                </tr>
                
                <tr>
                    <td>  
                        Car Make: 
                    </td>
                    <td>
                        {{specialCar.make}}
                    </td>
                </tr>
                
                <tr>
                    <td>  
                        Drivetrain: 
                    </td>
                    <td>
                        {{specialCar.driveTrain}}
                    </td>
                </tr>
                
                {{#if specialCar.powerModifications}}
                <tr>
                    <td>  
                        Power modifications: 
                    </td>
                    <td>
                        {{specialCar.powerModifications}}
                    </td>
                </tr>
                {{/if}}
                
                {{#if specialCar.engineSwap}}
                <tr>
                    <td>  
                        Engine Swap: 
                    </td>
                    <td>
                        {{specialCar.engineSwap}}
                    </td>
                </tr>
                {{/if}}
                
                <tr>
                    <td>
                        Photo:
                    </td>
                    <td>
                        <img {{bind-attr src=specialCar.imgUrl}} />
                    </td>
                </tr>
            </table>
            <hr />
        {{/each}}
        
    </div>
</script>

JavaScript

Module

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App = Ember.Application.create({});
​
App.ApplicationAdapter = DS.ActiveModelAdapter;
​
App.IndexRoute = Ember.Route.extend({
  model: function() {
      
      //find all the available drivers
      return this.store.find('driver');
  }
});
​
/*
We now design what the objects relationship suppose to be.
Each drivers can have one car only for this example.
In addition, each drivers have specific car model assigned to them.
​
The idea is to have our application generates the correct car model
for each drivers based on the data return from the server.
​
For the sake of our example, each car is unique.
*/
​
App.Driver = DS.Model.extend({
    name: DS.attr("string"),
    expertise: DS.attr("string"),
    specialCar: DS.belongsTo("specialCar", {
        polymorphic: true,
        async: true
    })
});
​
App.SpecialCar = DS.Model.extend({
    driver: DS.belongsTo("driver"),
    make: DS.attr("string"),
    driveTrain: DS.attr("string"),
    imgUrl: DS.attr("string")
});
​
App.AeHachiRoku = App.SpecialCar.extend({
    engineSwap: "TRD Group A AE-101",
    model: "AE-86 Trueno Sprinter"
});
​
App.RxSeven = App.SpecialCar.extend({
    powerModifications: "Turbo",
    model: "RX-7"
});
​
App.Wrx = App.SpecialCar.extend({
    powerModifications: "unknown",
    model: "Impreza WRX STi Coupe Type B"
});
​
$.mockjax({
    url: '/drivers',
    response: function(settings) {
        var json = {
            drivers: [
                {
                    id: 1, 
                    name: 'Fujiwara',
                    special_car: { ///not that the key of the ajax call is using underscore, this is because we are using active model adapter
                        id: 1,
                        type: "aeHachiRoku"
                    }
                },
                {
                    id: 2, 
                    name: 'Keisuke',
                    special_car: {
                        id: 2,
                        type: "rxSeven"
                    }
                },
                {
                    id: 3, 
                    name: 'Bunta',
                    special_car: {
                        id: 3,
                        type: "wrx"
                    }
                }
            ]
        };
        settings.success(json);
    }
});
​
$.mockjax({
    url: '/ae_hachi_rokus/1',
    response: function(settings) {
        var json = {
            ae_hachi_roku: {
                id: 1,
                make: "Toyota",
                drive_train: "RWD",
                img_url: "http://img4.wikia.nocookie.net/__cb20121228172202/initiald/images/thumb/b/b6/Tumblr_md4dpa2DhA1qd1llpo1_500.png/185px-Tumblr_md4dpa2DhA1qd1llpo1_500.png"
            }
        };
        settings.success(json);
    }
});
​
$.mockjax({
    url: '/rx_sevens/2',
    response: function(settings) {
        var json = {
            rx_seven: {
                id: 2,
                make: "Mazda",
                drive_train: "RWD",
                img_url: "http://img2.wikia.nocookie.net/__cb20140706184149/initiald/images/thumb/f/f8/Central-anime-initial-d-fifth-stage-02-dvd.jpg/185px-Central-anime-initial-d-fifth-stage-02-dvd.jpg"
            }
        };
        settings.success(json);
    }
});
​
$.mockjax({
    url: '/wrxes/3',
    response: function(settings) {
        var json = {
            wrx: {
                id: 3,
                make: "Subaru",
                drive_train: "AWD",
                img_url: "http://img2.wikia.nocookie.net/__cb20121227182505/initiald/images/thumb/3/3f/189705-SubaruImprezaWRX.jpg/185px-189705-SubaruImprezaWRX.webp"
            }
        };
        settings.success(json);
    }
});

CSS

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@import url(http://fonts.googleapis.com/css?family=Bitter);
​
body {
    font-family: 'Bitter', serif;
    color: #333;
    background-color: #efebe3;
    background-color: rgb(239, 235, 227);
    text-shadow: rgb(224, 224, 224) 1px 1px 0px;
    font-size: 1.2em;
}
​
table {
    border-radius: 3px;
}
​
table td {
    border: 2px solid #e1e1e1;
    padding: 3px;
    border-radius: 5px;
    background-color: #f2f2f2;
}
​
hr {
    border: none;
    border-top: medium double #333;
    color: #333;
    text-align: center;
    padding-top: 10px;
}
hr:after {
    content: "§";
    display: inline-block;
    position: relative; 
    top: -0.7em;  
    font-size: 1.5em;
    padding: 0 0.25em;
    background: #efebe3;
}
​
table.specCard {
    width: 500px;   
}
​
table.specCard td {
    width: 50%;   
}
}
​

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