Building E-Commerce Sites with Handel
by Christopher H. Laco
|
Pages: 1, 2, 3, 4, 5
Flip The More Magic Switch
Now it's time for the magic. Handel comes with a set of helpers for Catalyst. A helper is a module that Catalyst loads when running the create.pl script. The helpers generate TT template files; controller, model, or view modules; and just about anything else you can code into one.
Because this is a new web application, Handel can create the cart, the checkout process, and the order views using Handel::Scaffold. Handel::Scaffold is a meta-helper that uses other individual helpers to get the job done. If you want to add cart/order/checkout features to an existing Catalyst application, use the individual Catalyst helpers to create just the cart or just the checkout functionality.
Back in the terminal, use MyStore's create script to call Handel::Scaffold, passing it the DSN for the database created earlier:
[claco@cypher ~/MyStore] $ script/mystore_create.pl Handel::Scaffold \
dbi:SQLite:dbname=/home/claco/handel.dbOnce again, you will see some output scroll by:
created "/usr/home/claco/MyStore/script/../lib/MyStore/V/TT.pm"
created "/usr/home/claco/MyStore/script/../t/V/TT.t"
created "/usr/home/claco/MyStore/script/../lib/MyStore/M/Cart.pm"
created "/usr/home/claco/MyStore/script/../t/M/Cart.t"
created "/usr/home/claco/MyStore/script/../lib/MyStore/M/Orders.pm"
created "/usr/home/claco/MyStore/script/../t/M/Orders.t"
created "/usr/home/claco/MyStore/script/../root/cart"
created "/usr/home/claco/MyStore/script/../lib/MyStore/C/Cart.pm"
created "/usr/home/claco/MyStore/script/../root/cart/view.tt"
created "/usr/home/claco/MyStore/script/../root/cart/list.tt"
created "/usr/home/claco/MyStore/script/../t/C/Cart.t"
created "/usr/home/claco/MyStore/script/../root/orders"
created "/usr/home/claco/MyStore/script/../lib/MyStore/C/Orders.pm"
created "/usr/home/claco/MyStore/script/../root/orders/list.tt"
created "/usr/home/claco/MyStore/script/../root/orders/view.tt"
created "/usr/home/claco/MyStore/script/../t/C/Orders.t"
created "/usr/home/claco/MyStore/script/../root/checkout"
created "/usr/home/claco/MyStore/script/../lib/MyStore/C/Checkout.pm"
created "/usr/home/claco/MyStore/script/../root/checkout/edit.tt"
created "/usr/home/claco/MyStore/script/../root/checkout/preview.tt"
created "/usr/home/claco/MyStore/script/../root/checkout/payment.tt"
created "/usr/home/claco/MyStore/script/../root/checkout/complete.tt"
created "/usr/home/claco/MyStore/script/../t/C/Checkout.t"
[claco@cypher ~/MyStore] $That's it! You now have a shopping cart, an order list/view, and a checkout process framework without writing a single line of code!
Exploring the Results
I'm sure that you want to explore some of the features of your newly created codebase. Start the web application again:
[claco@cypher ~/MyStore] $ script/mystore_server.plWhen the application starts this time, there's quite a bit more output:
[Wed Sep 21 20:10:04 2005] [catalyst] [debug] Debug messages enabled
[Wed Sep 21 20:10:04 2005] [catalyst] [debug] Loaded dispatcher
"Catalyst::Dispatcher"
[Wed Sep 21 20:10:04 2005] [catalyst] [debug] Loaded engine
"Catalyst::Engine::HTTP"
[Wed Sep 21 20:10:04 2005] [catalyst] [debug] Found home
"/usr/home/claco/MyStore"
[Wed Sep 21 20:10:05 2005] [catalyst] [debug] Loaded components:
.=----------------------------------------------------------------------------=.
| MyStore::C::Cart |
| MyStore::C::Checkout |
| MyStore::C::Orders |
| MyStore::M::Cart |
| MyStore::M::Orders |
| MyStore::V::TT |
'=----------------------------------------------------------------------------='
[Wed Sep 21 20:10:05 2005] [catalyst] [debug] Loaded private actions:
.=-------------------------------------+--------------------------------------=.
| Private | Class |
|=-------------------------------------+--------------------------------------=|
| /default | MyStore |
| /cart/add | MyStore::C::Cart |
| /cart/clear | MyStore::C::Cart |
| /cart/restore | MyStore::C::Cart |
| /cart/default | MyStore::C::Cart |
| /cart/end | MyStore::C::Cart |
| /cart/save | MyStore::C::Cart |
| /cart/view | MyStore::C::Cart |
| /cart/delete | MyStore::C::Cart |
| /cart/empty | MyStore::C::Cart |
| /cart/begin | MyStore::C::Cart |
| /cart/destroy | MyStore::C::Cart |
| /cart/update | MyStore::C::Cart |
| /cart/list | MyStore::C::Cart |
| /orders/view | MyStore::C::Orders |
| /orders/default | MyStore::C::Orders |
| /orders/begin | MyStore::C::Orders |
| /orders/list | MyStore::C::Orders |
| /orders/end | MyStore::C::Orders |
| /checkout/payment | MyStore::C::Checkout |
| /checkout/default | MyStore::C::Checkout |
| /checkout/edit | MyStore::C::Checkout |
| /checkout/end | MyStore::C::Checkout |
| /checkout/preview | MyStore::C::Checkout |
| /checkout/begin | MyStore::C::Checkout |
| /checkout/update | MyStore::C::Checkout |
| /checkout/complete | MyStore::C::Checkout |
'=-------------------------------------+--------------------------------------='
[Wed Sep 21 20:10:05 2005] [catalyst] [debug] Loaded public actions:
.=-------------------------------------+--------------------------------------=.
| Public | Private |
|=-------------------------------------+--------------------------------------=|
| /cart/add | /cart/add |
| /cart/clear | /cart/clear |
| /cart/delete | /cart/delete |
| /cart/destroy | /cart/destroy |
| /cart/empty | /cart/empty |
| /cart/list | /cart/list |
| /cart/restore | /cart/restore |
| /cart/save | /cart/save |
| /cart/update | /cart/update |
| /cart/view | /cart/view |
| /checkout/complete | /checkout/complete |
| /checkout/default | /checkout/default |
| /checkout/edit | /checkout/edit |
| /checkout/payment | /checkout/payment |
| /checkout/preview | /checkout/preview |
| /checkout/update | /checkout/update |
| /orders/list | /orders/list |
| /orders/view | /orders/view |
'=-------------------------------------+--------------------------------------='
[Wed Sep 21 20:10:05 2005] [catalyst] [info] MyStore powered by Catalyst 5.33
You can connect to your server at http://localhost:3000/Cart, orders, checkout. Oh my!
