ruby on Rails 和部分动态菜单
我对 Rails 还很陌生,希望获得一些帮助来使用部分实现动态菜单。
截至目前,我的代码如下:
菜单部分:
.three.columns
%ul#nav
%li{:class => @active_page=="about" ? "active_page" : ""}
%a{:href => "../pages/about"} About
%li{:class => @active_page=="careers" ? "active_page" : ""}
%a{:href => "../pages/careers"} Careers
%li{:class => @active_page=="contact" ? "active_page" : ""}
%a{:href => "../pages/contact"} Contact
视图:
html...
= render :partial => 'shared/aboutmenu_nav'
more html...
页面助手:
def @active_page(c)
controller.action_name == c
end
注意:active_page
是我想传递给li 如果用户位于相应的页面上。例如,如果用户位于“联系人”页面上,则 active_page 类将仅传递给“联系人 li”元素。
我尝试了几种解决方案,包括创建多个 CSS 版本并在与页面对应的 body
上传递一个类?例如,
%body{:class => @page_name}
然后在pages_helper中定义@page_name,如下所示:
def page_name
@path.parameterize('_') unless @path.blank?
end
这两个版本似乎都不起作用,因为前一个(@active_page)不会产生任何结果。同样,我无法在 body 标签上分配类——当我检查源代码时,body 标签没有任何类。
对于如何使用部分实现动态菜单的任何帮助,我将不胜感激。如果有我没有尝试过的方法,请随时告诉我。我衷心感谢您的所有帮助,也非常感谢您的宝贵时间!谢谢你!
使用 Kanadada 的解决方案。该页面在样式化菜单应出现的位置逐字显示以下文本:
<li class="">
<a href="/pages/about">About</a>
</li>
<li class="active_page">
<a href="/pages/careers">Careers</a>
</li>
<li class="">
<a href="/pages/contact">Contact</a>
</li>
如果该代码位于源代码中,那就太好了;但是,源代码似乎无法识别它...相反,源代码显示以下代码:
<li class=""><a href="/pages/about">About</a></li><li class="active_page"><a href="/pages/careers">Careers</a></li><li class=""><a href="/pages/contact">Contact</a></li>
我怀疑它可能与 HAML 中解释 =top_menu
的方式有关?
i'm pretty new to rails and would like some help with implementing a dynamic menu using partials.
As of right now, my code is as follows:
the menu partial:
.three.columns
%ul#nav
%li{:class => @active_page=="about" ? "active_page" : ""}
%a{:href => "../pages/about"} About
%li{:class => @active_page=="careers" ? "active_page" : ""}
%a{:href => "../pages/careers"} Careers
%li{:class => @active_page=="contact" ? "active_page" : ""}
%a{:href => "../pages/contact"} Contact
the view:
html...
= render :partial => 'shared/aboutmenu_nav'
more html...
the pages helper:
def @active_page(c)
controller.action_name == c
end
Note: active_page
is the class that I would like to pass to the li
if the user is on the corresponding page. For example, if the user is on the Contact page, the active_page class would be passed to only the Contact li element.
I've tried several solutions including creating multiple CSS versions and passing a class on the body
corresponding with the page? for example,
%body{:class => @page_name}
and then defining @page_name in the pages_helper as follows:
def page_name
@path.parameterize('_') unless @path.blank?
end
Neither of these versions seem to work, as the former (@active_page) does not yield any results. Similarly, I was unable to assign a class on the body tag--when I checked the source code, the body tag did not have any classes.
I'd appreciate any help on how to implement a dynamic menu using partials. If there is a method I have not tried please feel free to inform me. I sincerely appreciate all of your help, and I'm very thankful for your time! Thank you!
Using Kanadada's solution. The page literally displays the following text where the styled menu should appear:
<li class="">
<a href="/pages/about">About</a>
</li>
<li class="active_page">
<a href="/pages/careers">Careers</a>
</li>
<li class="">
<a href="/pages/contact">Contact</a>
</li>
This code would be great if it was in the source code; however, the source does not seem to recognize it... instead the source code shows the following code:
<li class=""><a href="/pages/about">About</a></li><li class="active_page"><a href="/pages/careers">Careers</a></li><li class=""><a href="/pages/contact">Contact</a></li>
I suspect that it might have something to do with the way =top_menu
is interpreted in HAML?
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将这些方法添加到
helpers/appalication_helper.rb
现在在您的视图中:
注意:
使用路由助手作为路径,而不是对其进行硬编码。假设您有一个名为
PagesController
的控制器,您可以重写top_menu
方法,如下所示:Add these methods to
helpers/appalication_helper.rb
Now in your view:
Note:
Use route helpers for path instead of hard coding them. Assuming you have a controller called
PagesController
, you can rewrite thetop_menu
method as follows: