可以給你一個簡單範例：jsFiddle

<p ng-controller="DemoCtrl">
      <ng-table data="list"></ng-table>
</p>

var demo = angular.module('demo', []);

demo.directive('ngTable', function(){

    return {
        restrict: 'E',
        scope: {
            data: '='
        },
        link: function($scope, element, attrs){
            
        },
        template: '<table><tr ng-repeat="item in data"><td>{{ item.id }}</td><td>{{ item.name }}</td></tr></table>'
    };
});


demo.controller('DemoCtrl', function($scope){
    $scope.list = [
        {
            id: 123,
            name: 'Hello World'
        },{
            id: 234,
            name: 'Fucking world'
        },{
            id: 345,
            name: 'What did you say?'
        }
    ];
});

至於是不是“只能傳字串”，你需要看明白文件先：

文檔地址：scope