I am learning angularjs and I am able to list out my data I receive via a REST API. I display the data in a table and in one of the columns I want to have a delete button that will eventually make a DELETE call to remove that particular record from the database. Here is the HTML I using:

```
<table st-table="displayedCollection" st-safe-src="hosts" class="table table-striped">
    <thead>
    ...
    </thead>
    <tbody> 
        <tr ng-repeat="x in displayedCollection">
            <td>{{x.hostname}}</td>
            <td>{{x.ipaddress}}</td>
            <td>{{x.macaddress}}</td>            
            <td>
                <button 
                   type="button" 
                   class="btn btn-default btn-sm" 
                   ng-click="delete_record({{x._id}})">
                   <span class="glyphicon glyphicon-remove"></span>
                </button>
            </td>
        </tr>
    </tbody>
    ...    
   </table>

```

This gives me this error:

```
Error: [$parse:syntax] Syntax Error: Token '{' invalid key at column 16 of the expression [delete_record({{x._id}})] starting at [{x._id}})].

```

My controller looks like this:

```
app.controller("meanVoyCtrl", function($scope,$http) {
    ...        
    $scope.delete_record  = function(id) {alert("id is ["+id+"]");};
    ...
});

```

For now I'd be happy if I could just an `alert` pop up display the `_id` of the record to be deleted. 

What am I doing wrong here? 

Thanks