Divmod Nevow 0.8.0 review

Nevow is a next-generation web application templating system, based on the ideas developed in the Twisted Woven package. Divmod Ne

License: MIT/X Consortium License File size: 457K Developer: Divmod, Inc.

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Nevow is a next-generation web application templating system, based on the ideas developed in the Twisted Woven package.

Divmod Nevow's main focus is on separating the HTML template from both the business logic and the display logic, while allowing the programmer to write pure Python code as much as possible.

It separates your code into 'data' and 'render' functions, a simplified implementation of traditional MVC. It has various parts which can be used individually or as a whole, integrated web solution:

XHTML templates: contain no programming logic, only nodes tagged with nevow attributes
data/render methods: simplified MVC
stan: An s-expression-like syntax for expressing xml in pure python
formless: For describing the types of objects which may be passed to methods of your classes, validating and coercing string input from either web or command-line sources, and calling your methods automatically once validation passes
formless.webform: For rendering web forms based on formless type descriptions, accepting form posts and passing them to formless validators, and rendering error forms in the event validation fails
livepage: Cross-browser JavaScript glue for sending client side events to the server and server side events to the client after the page has loaded, without causing the entire page to refresh

What's New in This Release:
This release adds Nevow Interactive Tests (nit), a test runner that lets you exercise code in a browser and collect results in an structured manner, the ability to see JavaScript source lines in tracebacks logged on the server, a JavaScript implementation of DeferredList and gatherResults from Twisted, direct use of the Zope Interface (meaning everything will be faster from avoiding the compatibility layer provided by Twisted), and transparent, structured argument passing for Widget.__init__.