var viewModel = (function() {
    var self = this;
    selectedUser = ko.observable(new user());
    content = ko.observable(new content());

    self.retrieve = function() {
        var parameters = {
            '_endpoint': 'content',
            'filter': 'type:Announcement',
            'order': 'created_at:DESC',
            'size': '1'
        };
        $.ajax({
            url: "/restadapter",
            type: "GET",
            data: $.param(ko.toJS(parameters)),
            processData: false,
            contentType: "application/json",
            dataType: "json",
            success: function(result) {
                content(result.data.records[0]);
            },
            error: function(result) {

            }
        });

    };
})

ko.applyBindings(viewModel);
retrieve();