99 lines
3.3 KiB
Python
99 lines
3.3 KiB
Python
'''A Form subclass that provides close to the same API as the old form
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class (useful for transitioning existing forms).
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'''
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from quixote import get_request, get_path, redirect
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from quixote.form import Form as _Form, Widget, StringWidget, FileWidget, \
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PasswordWidget, TextWidget, CheckboxWidget, RadiobuttonsWidget, \
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SingleSelectWidget, SelectWidget, OptionSelectWidget, \
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MultipleSelectWidget, SubmitWidget, HiddenWidget, \
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FloatWidget, IntWidget
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from quixote.html import url_quote
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_widget_names = {
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"string" : StringWidget,
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"file" : FileWidget,
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"password" : PasswordWidget,
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"text" : TextWidget,
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"checkbox" : CheckboxWidget,
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"single_select" : SingleSelectWidget,
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"radiobuttons" : RadiobuttonsWidget,
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"multiple_select" : MultipleSelectWidget,
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"submit_button" : SubmitWidget,
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"hidden" : HiddenWidget,
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"float" : FloatWidget,
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"int" : IntWidget,
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"option_select" : OptionSelectWidget,
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}
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class Form(_Form):
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def __init__(self, action_url=None, *args, **kwargs):
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_Form.__init__(self, action=action_url, *args, **kwargs)
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self.cancel_url = None
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self.action_url = self.action
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def add_widget(self, widget_class, name, value=None,
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title=None, hint=None, required=False, **kwargs):
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try:
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widget_class = _widget_names[widget_class]
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except KeyError:
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pass
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self.add(widget_class, name, value=value, title=title, hint=hint,
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required=required, **kwargs)
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def add_submit_button(self, name, value):
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self.add_submit(name, value)
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def add_cancel_button(self, caption, url):
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self.add_submit("cancel", caption)
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self.cancel_url = url
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def get_action_url(self):
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action_url = url_quote(get_path())
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query = get_request().get_query()
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if query:
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action_url += "?" + query
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return action_url
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def render(self, action_url=None):
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if action_url:
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self.action_url = action_url
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return _Form.render(self)
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def process(self):
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values = {}
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request = get_request()
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for name, widget in self._names.items():
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values[name] = widget.parse()
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return values
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def action(self, submit, values):
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raise NotImplementedError("sub-classes must implement 'action()'")
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def handle(self):
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"""handle() -> string
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Master method for handling forms. It should be called after
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initializing a form. Controls form action based on a request. You
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probably should override 'process' and 'action' instead of
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overriding this method.
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"""
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request = get_request()
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if not self.is_submitted():
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return self.render(self.action_url)
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submit = self.get_submit()
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if submit == "cancel":
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return redirect(self.cancel_url)
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values = self.process()
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if submit == True:
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# The form was submitted by an unregistered submit button, assume
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# that the submission was required to update the layout of the form.
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self.clear_errors()
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return self.render(self.action_url)
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if self.has_errors():
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return self.render(self.action_url)
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else:
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return self.action(submit, values)
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