Catalyst: Accelerating Perl Web Application Development by Jonathan Rockway PDF

By Jonathan Rockway

ISBN-10: 1847190952

ISBN-13: 9781847190956

Layout, improve, try, and install purposes with the open-source MVC Catalyst framework. This e-book is for internet builders with easy Perl abilities who're new to Catalyst. while you're desirous about Ruby on Rails yet would prefer the gains of Rails with the familiarity of Perl, decide this e-book and start.

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This creates a URL like /address/edit/0/5. This is so the edit action can also create new addresses. When we edit an address, we specify only the address ID. When we want to create an address, we leave the address ID undefined (or zero) and specify the person's ID instead. This is a little unwieldy, so we abstract these details out to the add action. The add action accepts the person's ID and then forwards the appropriate data to the edit action. [ 50 ] Chapter 3 Once inside the edit action, we determine whether we're adding or editing.

Yml. This file is in the YAML format, which is convenient for configuration because every data structure in Perl can be described by YAML natively. If you don't like YAML, you can use any configuration file format that Config::Any supports. At the time of this writing, that means XML, Config::General (Apache-style), INI, JSON, and or a Perl script. To use one of these instead of YAML, just rename the config file have an extension that your desired format usually uses (xml for XML, ini for INI, js for JSON, pl for Perl, conf for Config::General).

You can use any database that you like for this, but I recommend SQLite for development. SQLite is an "embedded" database, so the database exists as a single file and requires no server to run. org/ (or through your distribution's package manager; the package is usually called "sqlite3"). quit $ Here we created a "test" table in a database file called /tmp/database and added two rows to it. SQLite has unusual semantics for auto-incrementing primary keys. You must declare the auto-increment column exactly as "INTEGER PRIMARY KEY" and then assign NULL during INSERT operations.

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Catalyst: Accelerating Perl Web Application Development by Jonathan Rockway


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