ANN: Nevow 0.3 released
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Wed Oct 13 04:14:41 CEST 2004
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Valentino Volonghi aka Dialtone <dialton3#NOSPAM.JJJJKIKK at virgilio.it> wrote in message news:<mailman.4047.1096423520.5135.python-announce-list at python.org>...
> GET it here: http://www.nevow.com/releases/0.3.0/nevow-0.3.tar.gz
> More Informations:
> Nevow (pronounced nou-veau) is a web application construction kit written
> in Python. It is designed to allow the programmer to express as much of
> the view logic as desired in Python, and includes a pure Python XML
> expression syntax named stan to facilitate this. However it also provides
> rich support for designer-edited templates, using a very small XML
> attribute language to provide bi-directional template manipulation
> Nevow also includes formless, a declarative syntax for specifying the
> types of method parameters and exposing these methods to the web. Forms
> can be rendered automatically, and form posts will be validated and input
> coerced, rendering error pages if appropriate. Once a form post has
> validated successfully, the method will be called with the coerced values.
> a browser and Python on the server. For 0.3, LivePage has been updated to
> operate on Mozilla, Firefox, Windows Internet Explorer 6, and Safari on
> implementation details are hidden from the programmer, with Nevow taking
> care of routing data to and from the server using XmlHttpRequest.
> * XHTML templates: contain no programming logic, only nodes tagged
> with nevow attributes
> * data/render methods: simplify the task of separating data from
> presentation and writing view logic
> * 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
> * 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
> events to the server and server side events to the client after the
> page has loaded, without causing the entire page to refresh
> ML: http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
> Bug Tracker: http://divmod.org/users/roundup.twistd/nevow/
> IRC: irc://irc.freenode.net/#twisted.web
> Commits: http://divmod.org/users/mailman.twistd/listinfo/nevow-commits
> What's New in Nevow 0.3:
> 2004-09-26 Donovan Preston <dp at divmod.org>
> * Added nevow.inevow.IQ interface, an interface for querying the
> stan DOM. Eventually, this interface will contain APIs for doing
> traditional DOM introspection, such as iterating children,
> examining tag names, and examining attributes. For now, it contains
> only the patternGenerator, onePattern, and allPatterns APIs. These
> APIs have been deprecated from Context.
> The main benefit of this is the ability to do:
> which would be nice for creating "pattern library" files containing
> common skin idioms which can then be copied and used throughout
> the app.
> 2004-09-25 Donovan Preston <dp at divmod.org>
> * Chatola received a major facelift, bringing it from cool demo
> up to almost a full fledged web-based chat server. The helper API
> LiveEvil.call(...) was added, which deprecates
> 2004-09-23 Tommi Virtanen <tv at twistedmatrix.com>
> * Make guard.SessionWrapper store its URL location in all requests it
> passes to its children. This allows the children know where to post
> the __login__ and __logout__ forms, even deep inside the resource
> tree (fixes issue59).
> * Guard now works as a non-root resource, with help from the above
> change. Semantics of __login__ clarified in unit tests; if your guard
> is at /foo, posting to /foo/__login__ redirects to /foo, and posting
> to /foo/__login__/ redirects to /foo/. The two unit tests that failed
> earlier now pass (with that change in their __login__ URLs).
> * If URL-based sessions are used, login no longer loses session
> information due to redirect to / (fixes issue56).
> 2004-09-20 Matt Goodall <matt at pollenation.net>
> * Added URL.secure() method to make switching between http and
> https easier.
> 2004-09-08 Donovan Preston <dp at divmod.org>
> * Nevow now includes a very simple proof-of-concept WSGI Application
> implementation, and can be used with no Twisted dependency. Nevow can
> also be used to write CGIs, either using a simple CGI WSGI gateway
> (which supports URL traversal), or by using Page.renderString (which does not).
> * Two new context interfaces, ICurrentSegments and IRemainingSegments,
> replace the need to examine the Request prepath and postpath attributes
> * ISerializable is deprecated, and has been replaced with a simple
> Flattener registry. nevow.flat.registerFlattener and
> nevow.flat.getFlattener have been added to support this.
> 2004-09-06 Donovan Preston <dp at divmod.org>
> * BACKWARDS INCOMPATIBLE CHANGE. Page.configurable_ *always* returns
> self, and a new Page.configurable_original *always* returns
> self.original. If you were relying on Page.configurable_'s
> introspection behavior and are now getting errors about adapting
> to IConfigurable, change your renderForms() calls to:
> This causes Page.configurable_original to be invoked and
> introspected for form rendering.
> 2004-08-23 Donovan Preston <dp at divmod.org>
> * LivePage uses a simpler implementation strategy which requires
> the browser to make one request per output event. As a result,
> LivePage now works on Mozilla, Safari, and Internet Explorer Windows.
> 2004-08-05 Donovan Preston <dp at divmod.org>
> * Implemented support for IFoo(ctx) synonym syntax. It does the
> same thing as ctx.locate(IFoo)
> * Removed Resource Generators, a feature of NevowSite that nobody
> used and wasn't really useful.
> * Changed all inevow.IResource apis to take a Context object
> where they used to take the request. Remembering objects in
> PageContexts is now much easier, and fewer hacks are required to
> build the context chain. The context chain now looks like:
> 2004-7-28 Donovan Preston <dp at divmod.org>
> * Parameterize data_* methods in the same way as render_* methods.
> Patch by k3mper.
> For example, <div nevow:data="foo bar,baz" /> will cause
> data_foo(self, bar, baz) to be called with the strings "bar" and
> "baz". This data method should return a callable taking ctx, data.
> The return value of this callable will be remembered as IData at
> this point in the context stack.
> * Added list-slicing support to ListContainer. You may now use
> list slicing syntax in a data directive in addition to a simple
> index. For example:
> def data_aList(self, ctx, data):
> return ["Buckle", "My", "Shoe"]
> <div nevow:data="aList">
> <span nevow:data="1:-1" nevow:render="string" />
> Will render as <div><span>My</span></div>
> 2004-7-20 Matt Goodall <matt at pollenation.net>
> * Modified sax loader to retain doctypes, comments and xmlns attributes.
> It's now possible to build XHTML valid pages :).
> xmlns attributes are always kept but there are options to ignore the doctype
> and comment (at the request of foom, not sure why yet). Right now, the default
> is to retain doctypes and comments but you can use the ignoreDocType and
> ignoreComment args to the xml loaders and flatsax parse functions. This bit
> may change.
> * Add a URL -> IResource adapter that performs a HTTP redirect. URLs can then
> be returned from locateChild().
> 2004-06-07 Donovan Preston <dp at divmod.org>
> * Added nevow.canvas, an experimental module similar to LivePage
> which provides a Python server-side API for drawing arbitrary lines,
> curves, and text in the browser. The implementation is socket-based
> and asynchronous, so the server can issue drawing commands to the
> client at any time.
> The idea is to provide a server-side API to the Python programmer
> and shield them from implementation details, but the current
> implementation uses a pre-compiled Flash movie (which never changes;
> we are not generating Flash bytecodes). An implementation using SVG
> or Safari's Canvas (nevow.canvas was written before the Safari Canvas
> announcement) would be possible.
> 2004-05-26 Donovan Preston <dp at divmod.org>
> * Add URLOverlay.keep, an API which lets you specify which query args
> will be carried on from the current page render into the new URL.
> 2004-05-24 Matt Goodall <matt at pollenation.net>
> * Extracted Fragment from Page. Hopefully, it will make it more obvious
> that embedding an object with data_ and render_ methods in a stan tree is
> possible without using something as "heavy" as Page which is really meant
> to be a web resource.
> 2004-05-23 Donovan Preston <dp at divmod.org>
> * Added some useful APIs to LiveEvil for manipulating the client-side
> - flt(stan): Flatten some stan, quoting apostrophes as
> - set(what, to): Set the contents of the client-side node
> with the id 'what' to the stan 'to'.
> - append(where, what): Append the stan 'what' to the client-
> side node with the id 'where'
> - alert(what): Show an alert to the user with the text "what"
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