Render Options
說明
Calls to the render method generally accept four options
:contenttype > By default, Rails will serve the results of a rendering operation with the MIME content-type of text/html (or application/json if you use the :json option, or application/xml for the :xml option.). There are times when you might like to change this, and you can do so by setting the :contenttype option:
:layout > With most of the options to render, the rendered content is displayed as part of the current layout. You’ll learn more about layouts and how to use them later in this guide.
:status > Rails will automatically generate a response with the correct HTML status code (in most cases, this is 200 OK). You can use the :status option to change this:
:location > You can use the :location option to set the HTTP Location header
使用情境
使用方式
-
:content_type
render :file => filename, :content_type => "application/rss" -
:layout
render :layout => "special layout" -
:status
render :status => 500 render :status => :forhidden -
:location
render :xml => photo, :location => photo url(photo)