sa 125 wrote:
> Those were really helpful posts -- I think I got the general idea, in
> which I should specify in the controller which layout it should belong
> to, and then in the layout file use <%= yield %> to render these views.
> I'll keep playing with it and see what comes up.
>
> Thanks!
Take this example:
app/controllers/people_controller.rb:
class PeopleController < ApplicationController
# layout 'custom'
# GET /people
# GET /people.xml
def index
@people = Person.find(:all)
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @people }
end
end
end
app/views/layouts/application.html.erb:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>My Application</title>
</head>
<body>
<h1>Header in Application layout</h1>
<%= yield %>
<p>Footer in layout</p>
</body>
</html>
app/views/layouts/people.html.erb:
----
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>My Application</title>
</head>
<body>
<h1>Header in People layout</h1>
<%= yield %>
<p>Footer in layout</p>
</body>
</html>
----
app/views/layouts/custom.html.erb:
----
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
<html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>My Application</title>
</head>
<body>
<h1>Header in Custom layout</h1>
<%= yield %>
<p>Footer in layout</p>
</body>
</html>
----
app/views/people/index.html.erb:
----
<h1>Listing people</h1>
<table>
<tr>
<th>First name</th>
<th>Last name</th>
</tr>
<% for person in @people %>
<%= render :partial => 'list' %>
<% end %>
</table>
<br />
<%= link_to 'New person', new_person_path %>
----
Notice in this example that the first line in the people_controller is
commented out. So in this case Rails begins searching for an appropriate
layout by first looking in app/layouts/ for a layout template named
people.html.erb. If it exists Rails will use it automatically. If it
does not exist then Rails looks for a template named
application.html.erb. If that file exists it will be applied to any
controller that does not specify a specific layout to use.
In all cases if the layout is provided (by uncommenting line #1 in this
example controller) it will look for a template with the given name
(custom.html.erb) in this example.
I also provided a contrived partial in the
app/views/people/index.html.erb template to show when how how partials
might be used.
There is also a method called "content_for" I'll leave that up to you to
investigate, but this can also be very useful when dealing with layouts
and partials.
--
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