Download PDF by Jonathan Rockway: Catalyst: Accelerating Perl Web Application Development

By Jonathan Rockway

ISBN-10: 1847190952

ISBN-13: 9781847190956

Layout, increase, try out, and set up purposes with the open-source MVC Catalyst framework. This booklet is for net builders with easy Perl abilities who're new to Catalyst. when you are curious about Ruby on Rails yet would favor the gains of Rails with the familiarity of Perl, choose this ebook and start.

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This continues until everything in the database has been printed. To see this in action, start up the server, add some new people and addresses to the database (via the sqlite3 utility) and watch them appear on the page at http://localhost:3000/person/list. [ 42 ] Chapter 3 Basic CRUD Let's start by writing the easiest method, a method to delete a person from the database. All we need is a simple action in the Person controller: sub delete : Local { my ($self, $c, $id) = @_; my $person : Stashed = $c->model('AddressDB::People')-> find({id => $id}); if($person){ $c->stash->{message} = 'Deleted '.

We iterate over each element in that array and print out the location, postal address, phone number and email address associated for that address. When there are no more addresses, we return to the WHILE loop and get the next Person in the database. This continues until everything in the database has been printed. To see this in action, start up the server, add some new people and addresses to the database (via the sqlite3 utility) and watch them appear on the page at http://localhost:3000/person/list.

The above example is read as, "This package (module, table) has many addresses in the AddressBook::Schema::AddressDB::Addresses table". The column that relates addresses to this package is person in the addresses table. {cascading_delete => 1} is a configuration option that causes any addresses associated with a person to be deleted when that person is deleted. The name addresses we chose above is the name we'll use to access the related data when we have a person object around. It can be anything you want; it need not bear any resemblance to a column name in either of the affected tables.

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Catalyst: Accelerating Perl Web Application Development by Jonathan Rockway


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