[Catalyst-commits] r8978 - Catalyst-Manual/5.70/trunk/lib/Catalyst/Manual/Tutorial

[hkclark at dev.catalyst.perl.org]

Author: hkclark
Date: 2008-12-29 21:10:24 +0000 (Mon, 29 Dec 2008)
New Revision: 8978

Modified:
   Catalyst-Manual/5.70/trunk/lib/Catalyst/Manual/Tutorial/MoreCatalystBasics.pod
Log:
Comment on how to do more advanced stuff with DBIC and provide links; also add back a sentence on DBIC terminology that somehow got deleted a long time ago.

Modified: Catalyst-Manual/5.70/trunk/lib/Catalyst/Manual/Tutorial/MoreCatalystBasics.pod
===================================================================
--- Catalyst-Manual/5.70/trunk/lib/Catalyst/Manual/Tutorial/MoreCatalystBasics.pod	2008-12-29 20:13:23 UTC (rev 8977)
+++ Catalyst-Manual/5.70/trunk/lib/Catalyst/Manual/Tutorial/MoreCatalystBasics.pod	2008-12-29 21:10:24 UTC (rev 8978)
@@ -602,8 +602,12 @@
 the helper, it use 
 L<DBIx::Class::Schema::Loader|DBIx::Class::Schema::Loader> to 
 dynamically load the schema information from the database every time 
-the application starts. And finally, C<dbi:SQLite:myapp.db> is the 
-standard DBI connect string for use with SQLite.
+the application starts. DBIC uses the schema to load other classes 
+that represent the tables in your database (DBIC refers to these 
+"table objects" as "result sources," see 
+L<DBIx::Class::ResultSource|DBIx::Class::ResultSource>). And finally, 
+C<dbi:SQLite:myapp.db> is the standard DBI connect string for use with 
+SQLite.
 
 B<NOTE:> Although the C<create=dynamic> option to the DBIC helper
 makes for a nifty demonstration, is only really suitable for very
@@ -639,11 +643,29 @@
         $c->stash->{template} = 'books/list.tt2';
     }
 
-B<TIP>: You may see the C<$c-E<gt>model('DB::Book')> un-commented above
-written as C<$c-E<gt>model('DB')-E<gt>resultset('Book')>.  The two
-are equivalent.
 
+B<TIP>: You may see the C<$c-E<gt>model('DB::Book')> un-commented 
+above written as C<$c-E<gt>model('DB')-E<gt>resultset('Book')>.  The 
+two are equivalent.  Either way, C<$c-E<gt>model> returns a 
+L<DBIx::Class::ResultSet|DBIx::Class::ResultSet> which handles queries 
+against the database and iterating over the set of results that are 
+returned.
 
+We are using the C<-E<gt>all> to fetch all of the books.  DBIC 
+supports a wide variety of more advanced operations to easily do 
+things like filtering and sorting the results.  For example, the 
+following could be used to sort the results by desending title:
+
+    $c->model('DB::Books')->search({}, {order_by => 'title DESC'});
+
+Some other examples are provided in 
+L<DBIx::Class::Manual::Cookbook/Complex WHERE clauses>, with 
+additional information found at L<DBIx::Class::ResultSet/search>, 
+L<DBIx::Class::Manual::FAQ/Searching>, 
+L<DBIx::Class::Manual::Intro|DBIx::Class::Manual::Intro> 
+and L<Catalyst::Model::DBIC::Schema|Catalyst::Model::DBIC::Schema>.
+
+
 =head2 Test Run The Application
 
 First, let's enable an environment variable option that causes