渲染Play框架2.0模板的一部分 [英] Rendering a portion of a Play framework 2.0 template
问题描述
我正在尝试从控制器调用模板内的标签（函数）而不是模板。这样我可以使用它来从ajax调用中对页面进行部分渲染。当然，我可以在几个模板中分离表单的组件，然后在那些模板上调用渲染，但我认为它会更加清晰。
I'm trying to call render from a controller for a tag (function) inside a template instead of the template. This way I could use it for partial renderings of a page from ajax calls. Of course I could separate the components of the form in several templates an call render on those but I think it would be cleaner the other way.
我想要做什么如下所示：
What I was trying to do is like the following:
formpage.scala.htm
formpage.scala.htm
@()
<html>
...
@content
...
</html>
@**********************************
* Helper generating form *
***********************************@
@content() = {
<h3 class="form-heading">@Messages("employees")</h3>
@form(routes.AppController.save()) {
@inputText...
...
}
使用ajax渲染内容函数，而不必将其与
单独文件分开。通过这种方式，我可以渲染模板的一部分而不会在多个文件中将其分割为
。
And using ajax render the content function, without having to separate it to a separate file. This way I could render portions of the template without fragmenting it in multiple files.
推荐答案
事实上标签是只是较小的模板，所以你可以使用标签 - 在模板和控制器中使用最简单的样本：
De facto the tag is just smaller template, so you can use tags for both - using in templates and controllers, the simplest sample:
/ app / views / tags / mytag.scala.html
This is my tag...
在控制器中可以呈现为：
In controller can be rendered as:
public static Result createFromTag(){
return ok(views.html.tags.mytag.render());
}
在其他模板中你只需要插入：
In other template you just to insert:
....
And there is my tag rendered
<b>@tags.mytag()</b>
更灵活
当然，因为它是模板 ergo Scala函数，你可以将一些参数传递给它甚至是Html体：
More flexibility
Of course as it's template ergo Scala function as well you can just pass some params to it or even Html body:
/app/views/tags/othertag.scala.html
@(headline: String)(body: Html)
<h3>@headline</h3>
<div class="tagsBody">
@body
</div>
在控制器中可以呈现为：
In controller can be rendered as:
public static Result createFromTag(){
return ok(
views.html.tags.othertag.render(
"Head from controller",
new play.api.templates.Html("This code becomes from <i>controller</b>")
)
);
}
（当然你可以导入这两个代码来实现更短的代码 import play.api.templates.Html; 和 import views.html.tags.othertag ）
(of course you can import these two for shorter code in action import play.api.templates.Html; and import views.html.tags.othertag)
最后在您的模板中，您可以将标记用作：
Finally in your template you can use the tag as:
And there is my tag rendered <br/>
@tags.othertag("Head from template"){
some content for the tag's body from <b>The Template!</b>
}
final。
您可以在文档中找到标签说明。
You'll find tags description in documentation.
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