Pass html string in controller and put into .html (angular js)

I have a problem. Call my button "off" or "on" that I needed. If active status in json is 1 then button off is showing in html, so instead. But I have tried with

ng-bind-html

Still not working, any solution for me ? Thanks

This is my code :

Controller

if(item.active === 1){
    html_button = '<button type="button" class="btn btn-success"><i class="fa fa-toggle-on"></i> On</button>';

}else{
   console.log(1);
    html_button = '<button type="button" class="btn btn-default"><i class="fa fa-toggle-off"></i> Off</button>';
}

$scope.getButtonOnOff = function(html_button) {

    return $sce.trustAsHtml(html_button);

};

Html

<span ng-if="data.active === 1">
            <button ng-show="data.active" type="button" class="btn btn-default" ng-click="FiturThread(data)"><i class="fa fa-toggle-off"></i> Off</button>
            <button ng-hide="data.active" type="button" class="btn btn-success" ng-click="FiturThread(data)"><i class="fa fa-toggle-on"></i> On</button>
        </span>
        <span ng-if="data.active === 0">
            <button ng-show="data.active" type="button" class="btn btn-success" ng-click="FiturThread(data)"><i class="fa fa-toggle-on"></i> On</button>
            <button ng-hide="data.active" type="button" class="btn btn-default" ng-click="FiturThread(data)"><i class="fa fa-toggle-off"></i> Off</button>
        </span>

Lets try angular way

<td width="20%">
        <button type="button" class="btn btn-primary" ng-click="getData(data)"><i class="fa fa-edit"></i> Edit</button>
        <button ng-show="item.active" type="button" class="btn btn-default"><i class="fa fa-toggle-on"></i> On</button>
        <button ng-hide="item.active" type="button" class="btn btn-default"><i class="fa fa-toggle-off"></i> Off</button>
</td>