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Module: domtemplate | Twisted-0.19.0/twisted/web/domtemplate.py
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DOMTemplate Most templating systems provide commands that you embed in the HTML to repeat elements, include fragments from other files, etc. This works fairly well for simple constructs and people tend to get a false sense of simplicity from this. However, in my experience, as soon as the programmer wants to make the logic even slightly more complicated, the templating system must be bent and abused in ways it was never meant to be used. The theory behind DOMTemplate is that Python code instead of template syntax in the HTML should be used to manipulate the structure of the HTML. DOMTemplate uses the DOM, a w3c standard tree-based representation of an HTML document that provides an API that allows you to traverse nodes in the tree, examine their attributes, move, add, and delete them. It is a fairly low level API, meaning it takes quite a bit of code to get a bit done, but it is standard -- learn the DOM once, you can use it from ActionScript, JavaScript, Java, C++, whatever. A DOMTemplate subclass must do two things: indicate which template it wants to use, and indicate which elements it is interested in. ------------------------------------------------------ class Test(DOMTemplate): template = ''' <html><head><title>Foo</title></head><body> <div class="Test"> This test node will be replaced </div> </body></html> ''' def getTemplateMethods(self): return [{'class': `Test`, 'method': self.test}] def test(self, request, node): ''' The test method will be called with the request and the DOM node that the test method was associated with. ''' # self.d has been bound to the main DOM "document" object newNode = self.d.createTextNode("Testing, 1,2,3") # Replace the test node with our single new text node return newNode
Imported modules |
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from cStringIO import StringIO import domhandlers import domwidgets import os from server import NOT_DONE_YET import stat import string from twisted.internet import reactor from twisted.python import components, defer, failure, mvc, log from twisted.python.defer import Deferred from twisted.python.mvc import View, IView, Controller from twisted.web import resource, widgets, domwidgets from twisted.web.resource import Resource import types from xml.dom import minidom
Classes |
DOMController | A simple controller that automatically passes responsibility on to the view
DOMTemplate | A resource that renders pages using DOM.
DefaultHandler |
DefaultWidget |
MethodLookup |

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