Under the MVC framwork, Controller is in charge of handling requests between Model and View. With this function in mind, it's possible for Controller to tell view to render different things. Below are some examples:
- render :text
Simply rendering a string with
render "This is a string", which can be useful if the codes get too complex.
- render :new
This would tell Rails to look for and render a page called
new.html.erb under the Views folder.
- render :layout
The default layout under Rails is
app/view/layouts/application.html.erb, but sometimes we may want the page to render a different layout, say with a color differen color scheme to distinguish an admin interface. In this case, we could build a new layout under
app/view/layouts/admin.html.erb, and under the Controller file add in a line of code: