如何在Twitter Bootstrap的脚手架上使用AngularJS ng-repeat？

Question

我将如何使用AngularJS ng-repeat显示以下HTML（Twitter
Bootstrap脚手架）？本质上，我需要关闭每第三条记录</div>，打印<hr>，然后打开另一个<div class="span4">

    <div class="row">
      <div class="span4">
        <h3>
          Project A
        </h3>
      </div>
      <div class="span4">
        <h3>
          Project B
        </h3>
      </div>
      <div class="span4">
        <h3>
          Project C
        </h3>
      </div>
    </div>

    <hr>

    <div class="row">
      <div class="span4">
        <h3>
          Project D
        </h3>
      </div>
      <div class="span4">
        <h3>
          Lab Title
        </h3>
      </div>
      <div class="span4">
        <h3>
          Project E
        </h3>
      </div>
    </div>

我为代码演示创建了一个小提琴。
http://jsfiddle.net/ADukg/261/

Answer 1

一种更优雅的方法是使用视图模型来提供分块的集合，然后让视图像

<div ng-controller="Controller">
    Projects <input ng-model="projects"></input>
    <hr/>
    <div ng-repeat="row in rows">
        <div ng-repeat="project in row">
            Projects {{project}}
        </div>
        <hr/>
    </div>
</div>​

并且coffeescript非常简单

# Break up an array into even sized chunks.
chunk = (a,s)->
    if a.length == 0
        []
    else               
        ( a[i..i+s-1] for i in [0..a.length - 1 ] by s)

@Controller = ($scope)->
    $scope.projects = "ABCDEF"

    $scope.$watch "projects", ->      
       $scope.rows = chunk $scope.projects.split(""), 3

angular.bootstrap(document, []);

​

http://jsfiddle.net/ADukg/370/