Correct approach of meta tagging in asp.net mvc 3
Hi I'm not sure if this is the correct approach, but I would like t开发者_如何转开发o build a site with dynamic meta tags.
Some meta tags are hard coded to the system, but some needs to load dynamically and I sould be able to set them in the corresponding action.
So I would need a meta tag building logic with something like a partial view, or even a child action, but I'm not sure about the correct approach.
I would like it to work even when there is nothing about it in an action, (it should load the default then)
Would a childaction in the layout.cshtml be the best approach?
You could try using the ViewBag object for this. I'll use a Dictionary, but you might be able to use something more strongly-typed if the meta tags aren't that dynamic.
In your (Base?)Controller constructor, create a dictionary in the ViewBag to hold the meta tags:
/* HomeController.cshtml */
public HomeController()
{
// Create a dictionary to store meta tags in the ViewBag
this.ViewBag.MetaTags = new Dictionary<string, string>();
}
Then to set a meta tag in your action, just add to the dictinary:
/* HomeController.cshtml */
public ActionResult About()
{
// Set the x meta tag
this.ViewBag.MetaTags["NewTagAddedInController"] = "Pizza";
return View();
}
Alternatively, you could even add it in the view (.cshtml):
/* About.cshtml */
@{
ViewBag.Title = "About Us";
ViewBag.MetaTags["TagSetInView"] = "MyViewTag";
}
Finally, in your Layout page, you can check for the presence of the dictionary, and loop through outputting a meta tag for each entry:
/* _Layout.cshtml */
<head>
<title>@ViewBag.Title</title>
<link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
@if (ViewBag.MetaTags != null)
{
foreach (var tag in ViewBag.MetaTags.Keys)
{
<meta name="@tag" content="@ViewBag.MetaTags[tag]" />
}
}
</head>
加载中,请稍侯......
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