Catalyst (software) - Philosophy

Philosophy

Catalyst is based on a "don't repeat yourself" (DRY) principle, which means that definitions should only have to be made once.

Catalyst can be used with automatic class loading from the database through one of the many loader modules, thus requiring no code for the database layer. But, if you require the flexibility of manually doing everything, it's also an option. Another guiding principle of Catalyst is flexibility.

Catalyst promotes the re-use of existing Perl modules that already handle common web application concerns well.

  • The Model part is handled through DBIx::Class, Plucene, Net::LDAP and other model classes.
  • The View layer is usually handled by Template Toolkit, Mason, or HTML::Template, among others.
  • The Controller layer is of course written by each application author. Large chunks of Controller functionality can usually be deferred to one of the many Catalyst plugins (e.g., Catalyst::Plugin::FormValidator, Catalyst::Plugin::Prototype, Catalyst::Plugin::Account::AutoDiscovery, etc.).
  • Finally, Catalyst offers a set of helpers to simplify flow control and mapping URLs to controller methods.

Catalyst has a large selection of plugins. For example, it has JavaScript generation for Ajax and RIAs using the Catalyst::Plugin::Prototype module (prototype is an Ajax framework). Plugins cover many areas, for example authentication, session management, HTTP negotiation and REST.

Catalyst can also be used with other Ajax frameworks such as jQuery or YUI, the Yahoo! User Interface Library.

Read more about this topic:  Catalyst (software)

Famous quotes containing the word philosophy:

    The very hope of experimental philosophy, its expectation of constructing the sciences into a true philosophy of nature, is based on induction, or, if you please, the a priori presumption, that physical causation is universal; that the constitution of nature is written in its actual manifestations, and needs only to be deciphered by experimental and inductive research; that it is not a latent invisible writing, to be brought out by the magic of mental anticipation or metaphysical mediation.
    Chauncey Wright (1830–1875)

    If mass communications blend together harmoniously, and often unnoticeably, art, politics, religion, and philosophy with commercials, they bring these realms of culture to their common denominator—the commodity form. The music of the soul is also the music of salesmanship. Exchange value, not truth value, counts.
    Herbert Marcuse (1898–1979)

    There is a constant in the average American imagination and taste, for which the past must be preserved and celebrated in full-scale authentic copy; a philosophy of immortality as duplication. It dominates the relation with the self, with the past, not infrequently with the present, always with History and, even, with the European tradition.
    Umberto Eco (b. 1932)