如何使用角度加载动态内联模板 [英] How to load dynamic inline template with angular

问题描述

我有一个循环对象数组的 ng-repeat.在每个循环中，值 'template' &'values' 被初始化.以下版本有效并使用 ng-include 加载模板，但它恰好非常非常慢:

<div ng-init="values = dbo.get4(attobj.key); key = attobj.key; template = attobj.template || getAttributeTemplate(dbo.clazz + attobj.key);"><div class="content" ng-include="template"></div>

</td></tr>

模板和值的值是动态的，但它始终保存模板/脚本的 id，例如:

<script type="text/ng-template" id="link_as_dn_template"><a href="#/view/{{ dbo.cid }}"><p>{{ dbo.displayName() }}</p></a></脚本

请注意，被调用的模板也使用 ng-include 调用了第二个模板.

我试图通过使用自定义指令加载模板来加快速度，但似乎无法使以下示例适用于我的情况:

app.directive('ngInline', ['$templateCache',函数($templateCache){返回 {限制:'A'，priority: 400,//与 ng-include 相同.编译:函数(元素，属性){var templateName = attrs.ngInline;如果(！模板名称){throw new Error('ngInline: 预期模板名称');}var template = $templateCache.get(templateName);如果(angular.isUndefined(模板)){throw new Error('ngInline: unknown template ' + templateName);}element.html(模板);}};}]);

谁能向我解释如何正确有效地执行此操作(平均 100 行 x35 列 -> 多值单元格/渲染)

这个例子来自:http://zachsnow.com/#!/blog/2014/angularjs-faster-ng-include/

解决方案

指令:

app.directive('customtemp', function($templateCache, $compile) {返回 {链接:函数(范围，元素，属性){var z = $templateCache.get(scope.template);element.html(z);$compile(element.contents())(scope);}}});

主模板:

<td class="tableColumnsDocs" ng-repeat="attobj in columns track by $index"><customtemp ng-init="values = dbo.get4(attobj.key); key = attobj.key; template = attobj.template || getAttributeTemplate(dbo.clazz + attobj.key);"></customtemp></td></tr>

示例加载/调用模板:

<script type="text/ng-template" id="link_as_dn_template"><a href="#/view/{{ dbo.cid }}"><p>{{ dbo.displayName() }}</p></a>

结果比使用 ng-include 快 4 倍.

I have an ng-repeat that loops over an array of objects. At each loop the value 'template' & 'values' is initialised. The following version works and uses ng-include to load the template but it happens to be very very slow:

<tr class="tableRowsDocs" ng-repeat="dbo in rows track by $index">
    <div ng-init="values = dbo.get4(attobj.key); key = attobj.key; template = attobj.template || getAttributeTemplate(dbo.clazz + attobj.key);">
    <div class="content" ng-include="template"></div>
    </div>
  </td>
</tr>

The value for template and values is dynamic but it always holds the id of a template/script like:

<script type="text/ng-template" id="links_as_dns_template">
      <div ng-repeat="dbo in values track by $index" ng-include="'link_as_dn_template'"></div>
</script>

<script type="text/ng-template" id="link_as_dn_template">
  <a href="#/view/{{ dbo.cid }}"><p>{{ dbo.displayName() }}</p></a>
</script

Notice that the called template calles a second template also using ng-include.

I am trying to make things faster by using a custom directive to load the templates but cant seem to be able to make the following example to work in my case:

app.directive('ngInline', [
  '$templateCache',
  function($templateCache) {
    return {
      restrict: 'A',
      priority: 400, // Same as ng-include.
      compile: function(element, attrs){
        var templateName = attrs.ngInline;
        if(!templateName){
          throw new Error('ngInline: expected template name');
        }
        var template = $templateCache.get(templateName);
          if(angular.isUndefined(template)){
          throw new Error('ngInline: unknown template ' + templateName);
        }

        element.html(template);
      }
    };
  }
]);

Can anyone explain to me how to do this properly and efficiently(average 100 rows x35 columns ->multivalued cells/render)

This example is from: http://zachsnow.com/#!/blog/2014/angularjs-faster-ng-include/

解决方案

Directive:

app.directive('customtemp', function($templateCache, $compile) {
   return {  
       link: function(scope, element, attrs) {
            var z = $templateCache.get(scope.template);
            element.html(z);
            $compile(element.contents())(scope);
       }
   }
});

Main template:

<tr class="tableRowsDocs" ng-repeat="dbo in rows track by $index">
  <td class="tableColumnsDocs" ng-repeat="attobj in columns track by $index">
    <customtemp ng-init="values = dbo.get4(attobj.key); key = attobj.key; template = attobj.template || getAttributeTemplate(dbo.clazz + attobj.key);">

    </customtemp>
  </td>
</tr>

Example Loaded/called templates:

<script type="text/ng-template" id="links_as_dns_template">
      <div ng-repeat="dbo in values track by $index" ng-include="'link_as_dn_template'"></div>
</script>

<script type="text/ng-template" id="link_as_dn_template">
  <a href="#/view/{{ dbo.cid }}"><p>{{ dbo.displayName() }}</p></a>
</script>

Result 4 times faster than using ng-include.

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