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I have a layout page that has variables that need to be filled. Example:
@ModelType KarateAqua.schoolModel
<html>
<body>
@RenderBody()
<div id="footer">
<div class="content">
<div class="bottom_logo">
<a href="/"><span class="inv">@Model.schoolName</span></a>
</div>
</div>
</div>
</body>
</html>
I don't want to populate this in every ActionResult. Is there a way to pass data to a layout page once and do it for all instances?
999
OK since you want this to be set once you can make use of a partial view. However depending on your needs you will need to have several partial views (may be not ideal if sections are going to be scattered across the _layout page)
your partial view will look like
@model KarateAqua.schoolModel
<div class="bottom_logo">
<a href="/"><span class="inv">@Model.schoolName</span>
</div>
Controller
public class SchoolController : Controller
{
public ActionResult Index()
{
//get schoolModel
return PartialView(schoolModel);
}
}
in your _layout.cshtml place this line where you want to have the partial view to be inserted
@Html.Action("Index","School")
Create an action filter and decorate your controller classes. Inside the action filter you have access to put values in the viewbag which are available to your layout.
This will run on each request and you will not have to set the values in each action. You can look for and ignore things like a child request and ajax requests which typically do not use the layout anyways and not set your viewbag values for those.
Below is a sample of an attribute i created to copy an object from the session and make it available to the layout via the ViewBag
public class CurrentUserAttribute : ActionFilterAttribute
{
public override void OnResultExecuting(ResultExecutingContext filterContext)
{
// Don't bother running this for child action or ajax requests
if (!filterContext.IsChildAction && !filterContext.RequestContext.HttpContext.Request.IsAjaxRequest())
{
if (filterContext.HttpContext.Session != null)
{
var currentUser = filterContext.HttpContext.Session["CurrentUser"] as CurrentUser;
if (currentUser != null)
{
filterContext.Controller.ViewBag.CurrentUser = currentUser;
}
}
}
}
}
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