KnockoutJS fails to create observables out of JSON data

I created a basic application that retrieves JSON data from the server using C# code.

public JsonResult Read()
{
    var products = db.Products;
    return Json(GetProducts(), JsonRequestBehavior.AllowGet);
}

public IEnumerable<Product> GetProducts()
{
    var data = db.Products.ToList();
    return (data);
}

In the view, I included the following to bind the view model data.

<div>
<table data-bind="with: products">
    <thead><tr><th>From</th><th>To</th><th>Subject</th></tr></thead>
    <tbody data-bind="foreach: Object">
        <tr>
            <td data-bind="text: id"></td>
            <td data-bind="text: name"></td>
            <td data-bind="text: description"></td>
        </tr>    
    </tbody>
</table>
</div>
 <script type="text/javascript">
     function ProductsViewModel() {
         var self = this;
         self.products = ko.observable();
         $.getJSON("http://localhost:50998/Home/Read", function (data) {
             self.products = JSON.parse(data);
         });

}
     ko.applyBindings(new ProductsViewModel());
 </script>

The JSON data returned from the action is:

[{"ID":1,"Name":"Roger","Description":"Test1"},{"ID":2,"Name":"Roger2","Description":"Test2"}]

After parsing the JSON data, I encountered an issue where I couldn't update the observerable. Any insights on why this might be happening?

Answer №1

To assign the output of JSON.parse to self.products (or any other observable), use the syntax self.products(JSON.parse(data)). Remember, observables work like functions and should be treated as such! ;-)

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