Rack: How do you store the URL as a variable? - ruby

Question

I am writing a simple static Rack app. Check out the config.ru code below:
use Rack::Static,
:urls => ["/elements", "/img", "/pages", "/users", "/css", "/js"],
:root => "archive"
map '/' do
run Proc.new { |env|
[
200,
{
'Content-Type' => 'text/html',
'Cache-Control' => 'public, max-age=6400'
},
File.open('archive/splash.html', File::RDONLY)
]
}
end
map '/pages/search.html' do
run Proc.new { |env|
[
200,
{
'Content-Type' => 'text/html',
'Cache-Control' => 'public, max-age=6400'
},
File.open('archive/pages/search.html', File::RDONLY)
]
}
end
map '/pages/user.html' do
run Proc.new { |env|
[
200,
{
'Content-Type' => 'text/html',
'Cache-Control' => 'public, max-age=6400'
},
File.open('archive/pages/user.html', File::RDONLY)
]
}
end
# Each map section is repeated for each HTML page served
I'd like to simplify this by storing the URL as variable and creating one map section that says
map url do
run Proc.new { |env|
[
200,
{
'Content-Type' => 'text/html',
'Cache-Control' => 'public, max-age=6400'
},
File.open('archive' + url, File::RDONLY)
]
}
end
How can I correctly set this url variable?

Answer 1

How about:
static_page_mappings = {
'/' => 'archive/splash.html',
'/pages/search.html' => 'archive/pages/search.html'
'/pages/user.html' => 'archive/pages/user.html',
}
static_page_mappings.each do |req, file|
map req do
run Proc.new { |env|
[
200,
{
'Content-Type' => 'text/html',
'Cache-Control' => 'public, max-age=6400',
},
File.open(file, File::RDONLY)
]
}
end
end

Answer 2

You shouldn't need the map part.
run Proc.new { |env|
[
200,
{
'Content-Type' => 'text/html',
'Cache-Control' => 'public, max-age=6400'
},
File.open( 'archive' + env['PATH_INFO'], File::RDONLY)
]
}