24.3 Active Resources 21.2 Form Helpers
curl --silent --head http://localhost:3000/
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
X-Ua-Compatible: IE=Edge
Etag: "5d8805f38529889f7cbb9be2d37f8824"
Cache-Control: max-age=0, private, must-revalidate
X-Runtime: 0.335481
Content-Length: 0
Server: WEBrick/1.3.1 (Ruby/1.9.2/2011-07-09)
Date: Fri, 25 May 2012 16:30:22 GMT
Connection: Keep-Alive
Set-Cookie: _depot_session=BAh7CEkiD3Nlc3Npb25faWQGOgZFRkkiJTM4MGZiOGE0OTc3N2IwOTk0NGEyMjZiMzliZDUwM2FiBjsAVEkiDGNhcnRfaWQGOwBGaRBJIhBfY3NyZl90b2tlbgY7AEZJIjFraVlwVGlpUUcvcDBTZjhobXdBc016NVJNOVVyS3RGeDFiOHVoMThzcE9NPQY7AEY%3D--b752f58381d5b12e78ceecd1d23dfbcf64db9fe7; path=/; HttpOnly
add a method to return the latest product
edit app/models/product.rb
set ETAG and LastModified headers on the response
edit app/controllers/store_controller.rb
class StoreController < ApplicationController
skip_before_filter :authorize
def index
if params[:set_locale]
redirect_to store_path(locale: params[:set_locale])
else
@products = Product.order(:title)
@cart = current_cart
end
latest = Product.latest
fresh_when etag: latest, last_modified: latest.created_at.utc
expires_in 10.minutes, public: true
end
end
curl --silent --head http://localhost:3000/
HTTP/1.1 200 OK
Etag: "662820ad99365ede95aef5527f315e42"
Last-Modified: Fri, 25 May 2012 16:12:21 GMT
Content-Type: text/html; charset=utf-8
Cache-Control: max-age=600, public
X-Ua-Compatible: IE=Edge
X-Runtime: 0.315978
Content-Length: 0
Server: WEBrick/1.3.1 (Ruby/1.9.2/2011-07-09)
Date: Fri, 25 May 2012 16:30:22 GMT
Connection: Keep-Alive
Set-Cookie: _depot_session=BAh7CEkiD3Nlc3Npb25faWQGOgZFRkkiJTZiYTk2ODdjZTZlYzYwNGVlNDVhMDZhMjQwZWU2ZWFlBjsAVEkiDGNhcnRfaWQGOwBGaRFJIhBfY3NyZl90b2tlbgY7AEZJIjFRYVhwUE5qbWRwQktXM3ppczFva0xFSGV1MHNYUHc0WFFCNjQvYkszWm5zPQY7AEY%3D--1007dad426984796fcf59b71932231db7a501674; path=/; HttpOnly
curl --silent --head http://localhost:3000/ -H 'If-None-Match: "662820ad99365ede95aef5527f315e42"'
HTTP/1.1 304 Not Modified
Etag: "662820ad99365ede95aef5527f315e42"
Last-Modified: Fri, 25 May 2012 16:12:21 GMT
Cache-Control: max-age=600, public
X-Ua-Compatible: IE=Edge
X-Runtime: 0.255340
Server: WEBrick/1.3.1 (Ruby/1.9.2/2011-07-09)
Date: Fri, 25 May 2012 16:30:23 GMT
Set-Cookie: _depot_session=BAh7B0kiD3Nlc3Npb25faWQGOgZFRkkiJWZmOTk4YWZmMzUxMTA0MDlkMjMwYzc0MTQ5OGU2ZjcwBjsAVEkiDGNhcnRfaWQGOwBGaRM%3D--0cc522f58be5993563041ac0727623e2d7066114; path=/; HttpOnly
curl --silent --head http://localhost:3000/ -H 'If-Modified-Since: Fri, 25 May 2012 16:12:21 GMT'
HTTP/1.1 304 Not Modified
Etag: "662820ad99365ede95aef5527f315e42"
Last-Modified: Fri, 25 May 2012 16:12:21 GMT
Cache-Control: max-age=600, public
X-Ua-Compatible: IE=Edge
X-Runtime: 0.252049
Server: WEBrick/1.3.1 (Ruby/1.9.2/2011-07-09)
Date: Fri, 25 May 2012 16:30:23 GMT
Set-Cookie: _depot_session=BAh7B0kiD3Nlc3Npb25faWQGOgZFRkkiJWYxMDc1ZWUwMjgxNWYzODcwNWU5M2MzZmM0NTM1NWJhBjsAVEkiDGNhcnRfaWQGOwBGaRQ%3D--72411c952642b03488e4a8d7c2ede1e3dd0e8518; path=/; HttpOnly
Turn on caching in development
edit config/environments/development.rb
Depot::Application.configure do
# Settings specified here will take precedence over those in config/application.rb
# In the development environment your application's code is reloaded on
# every request. This slows down response time but is perfect for development
# since you don't have to restart the web server when you make code changes.
config.cache_classes = false
# Log error messages when you accidentally call methods on nil.
config.whiny_nils = true
# Show full error reports and disable caching
config.consider_all_requests_local = true
config.action_controller.perform_caching = true
# Don't care if the mailer can't send
config.action_mailer.raise_delivery_errors = false
# Don't actually send emails
config.action_mailer.delivery_method = :test
#
# Alternate configuration example, using gmail:
# config.action_mailer.delivery_method = :smtp
# config.action_mailer.smtp_settings = {
# address: "smtp.gmail.com",
# port: 587,
# domain: "domain.of.sender.net",
# authentication: "plain",
# user_name: "dave",
# password: "secret",
# enable_starttls_auto: true
# }
# Print deprecation notices to the Rails logger
config.active_support.deprecation = :log
# Only use best-standards-support built into browsers
config.action_dispatch.best_standards_support = :builtin
# Do not compress assets
config.assets.compress = false
# Expands the lines which load the assets
config.assets.debug = true
end
curl --silent --head http://localhost:3000/
HTTP/1.1 200 OK
Etag: "662820ad99365ede95aef5527f315e42"
Last-Modified: Fri, 25 May 2012 16:12:21 GMT
Content-Type: text/html; charset=utf-8
Cache-Control: max-age=600, public
X-Ua-Compatible: IE=Edge
X-Runtime: 2.504903
Date: Fri, 25 May 2012 16:30:35 GMT
X-Content-Digest: d7e191569490b3ead069daeb133627076880fac6
Content-Length: 6641
Age: 1
X-Rack-Cache: fresh
Server: WEBrick/1.3.1 (Ruby/1.9.2/2011-07-09)
Connection: Keep-Alive
curl --silent --head http://localhost:3000/ -H 'If-None-Match: "662820ad99365ede95aef5527f315e42"'
HTTP/1.1 304 Not Modified
Etag: "662820ad99365ede95aef5527f315e42"
Cache-Control: max-age=600, public
X-Ua-Compatible: IE=Edge
X-Runtime: 2.504903
Date: Fri, 25 May 2012 16:30:35 GMT
X-Content-Digest: d7e191569490b3ead069daeb133627076880fac6
Age: 1
X-Rack-Cache: fresh
Server: WEBrick/1.3.1 (Ruby/1.9.2/2011-07-09)