Example App =========== An example is worth a thousand words. Here's an example `Pyramid `_ application demonstrating how one might use :mod:`deform` to render a form. .. warning:: :mod:`deform` is not dependent on :mod:`pyramid` at all; we use Pyramid in the examples below only to facilitate demonstration of an actual end-to-end working application that uses Deform. Here's the Python code: .. code-block:: python :linenos: import os from paste.httpserver import serve from pyramid.config import Configurator from colander import MappingSchema from colander import SequenceSchema from colander import SchemaNode from colander import String from colander import Boolean from colander import Integer from colander import Length from colander import OneOf from deform import ValidationFailure from deform import Form from deform import widget here = os.path.dirname(os.path.abspath(__file__)) colors = (('red', 'Red'), ('green', 'Green'), ('blue', 'Blue')) class DateSchema(MappingSchema): month = SchemaNode(Integer()) year = SchemaNode(Integer()) day = SchemaNode(Integer()) class DatesSchema(SequenceSchema): date = DateSchema() class MySchema(MappingSchema): name = SchemaNode(String(), description = 'The name of this thing') title = SchemaNode(String(), widget = widget.TextInputWidget(size=40), validator = Length(max=20), description = 'A very short title') password = SchemaNode(String(), widget = widget.CheckedPasswordWidget(), validator = Length(min=5)) is_cool = SchemaNode(Boolean(), default = True) dates = DatesSchema() color = SchemaNode(String(), widget = widget.RadioChoiceWidget(values=colors), validator = OneOf(('red', 'blue'))) def form_view(request): schema = MySchema() myform = Form(schema, buttons=('submit',)) if 'submit' in request.POST: controls = request.POST.items() try: myform.validate(controls) except ValidationFailure, e: return {'form':e.render()} return {'form':'OK'} return {'form':myform.render()} if __name__ == '__main__': settings = dict(reload_templates=True) config = Configurator(settings=settings) config.add_view(form_view, renderer=os.path.join(here, 'form.pt')) config.add_static_view('static', 'deform:static') app = config.make_wsgi_app() serve(app) Here's the Chameleon ZPT template named ``form.pt``, placed in the same directory: .. code-block:: xml :linenos: Deform Sample Form App