svv/controllers.py
author Tero Marttila <terom@fixme.fi>
Wed, 22 Dec 2010 02:52:25 +0200
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child 7 bbac4b0f4320
permissions -rw-r--r--
Split wsgi.py into controllers/customers/urls for now; start orders form
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# coding: utf-8
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"""
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    Generic controller base classes.
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    respond(Request) -> Response
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"""
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from werkzeug import Response
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from svv import html
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from svv.html import tags
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class AppHandler (object):
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    """
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        Per-request handler type, containing the request context and implementing the response.
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        Works on a generic level, i.e. WSGI/Werkzeug URL-mapped request in, response out.
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    """
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    def __init__ (self, app, request, urlmap) :
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        """
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            Initialize for processing the given Request, to prepare for action-method later on
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                app     - the global Application state
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                request - the request state
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                urlmap  - the URL map we were matched through
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        """
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        self.app = app
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        self.request = request
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        self.urlmap = urlmap
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    def build_url (self, endpoint, **values) :
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        """
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            Return an URL for the given endpoint, applying the given values
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        """
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        return self.urlmap.build(endpoint, values)
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    def respond (self, url_values) :
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        """
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            Handle request that was mapped to ourselves via the URL routing, using given dict of values from URL.
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        """
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        raise NotImplementedError()
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class PageHandler (AppHandler) :
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    """
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        Specialized AppHandler for normal HTML page views.
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        Renders the layout template and HTML.
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    """
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    def respond (self, url_values) :
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        title = "Index"
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        css = [
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                "/static/layout.css", 
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                "/static/style.css", 
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                "/static/forms.css",
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                "/static/treelist.css"
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        ]
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        scripts = [
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                "/static/js/jquery.js",
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                "/static/js/forms.js",
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                #"/static/js/prototype.js", 
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                #"/static/js/scriptaculous/scriptaculous.js", 
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                #"/static/js/treelist.js"
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        ]
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        head = (
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            tags.title(title),
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            (tags.link(rel='Stylesheet', type="text/css", href=src) for src in css),
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            # XXX: script can't self-close >_<
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            (tags.script(src=src)(" ") for src in scripts),
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        )
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        # XXX: silly circular-import hack for urls
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        #      it's not sustainable for a base class to referr to its subclasses at define time
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        from svv import urls
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        header = ("Foo List")
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        nav = [tags.ul(tags.li(tags.a(href='#')(name)) for name in ['Nav A', 'Nav B', 'Nav C'])]
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        menu = [tags.ul(tags.li(tags.a(href=url)(name)) for name, url in [
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            ("Etusivu",     self.build_url(urls.Index)),
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            ("Uusi tilaus", self.build_url(urls.NewOrderView)),
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            ("Tilaukset",   self.build_url(urls.OrdersView)),
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            ("Tilaajat",    self.build_url(urls.CustomersView)),
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        ])]
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        footer = ("Copyright?")
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        # render page HTML
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        content = self.render(**url_values)
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        layout = (
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            tags.div(id='header')(header),
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            tags.div(id='container')(
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                tags.div(id='menu')(menu),
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                tags.div(id='nav')(nav),
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                tags.div(id='content')(content),
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            ),
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            tags.div(id='footer')(footer),
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        )
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        # perform the actual rendering (run generators etc.)
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        html_text = unicode(html.document(head, layout))
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        # response object
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        # XXX: unicode?
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        return Response(html_text, mimetype='text/html')
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    def render (self, **args) :
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        """
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            Render and return HTML for page content.
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            XXX: must be HTML object, support just text?
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        """
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        raise NotImplementedError()
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### XXX: random test controllers
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class Document (AppHandler) :
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    """
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        PDF generation/export
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    """
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    def respond (self, url_values) :
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        title = url_values.get('name', "Hello World")
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        tpl = pdf.PageTemplate('id', 
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            header_columns  = (
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                ("", ""),
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                ("", ""),
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                ("", ""),
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                ("Vuokrasopimus", "%(today)s\n" + title + "\n"),
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            ),
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            footer_columns  = (
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                ("Teekkarispeksi Ry", "www.teekkarispeksi.fi"),
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                ("Tekniikkavastaava", "Juha Kallas\n045 xxx yyzz\njskallas@cc.hut.fi"),
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                ("Varastovastaava", "Joel Pirttimaa\n045 xxx yyzz\njhpirtti@cc.hut.fi"),
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                ("", ""),
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            ),
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        )
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        doc = pdf.DocumentTemplate([tpl],
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            title = title, author = "A. N. Onous"
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        )
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        # stylesheet
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        styles = pdf.Styles
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        # tree root
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        list_seq = pdf.ListItem.seq
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        tree = pdf.ListItem("Sopimusehdot", styles.h2, None, list_seq(), [
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            pdf.ListItem("Osapuolet", styles.list_h2, None, list_seq(), [
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                pdf.ListItem(None, None, "Teekkarispeksi ry (Y-tunnus 1888541-7), jäljempänä “Vuokranantaja”."),
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                pdf.ListItem(None, None, title + u", jäljempänä “Vuokraaja”. 1.1 ja 1.2 jäljempänä yhdessä “osapuolet”.")
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            ]),
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            pdf.ListItem("Kaluston lainaaminen", styles.list_h2, None, list_seq(), [
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                pdf.ListItem("Yleistä", styles.list_h3, "Tässä sopimuksessa sovitaan toiminnasta Vuokranantajan lainatessa tanssimattoja Vuokraajalle"),
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                pdf.ListItem("Vuokranantajan velvollisuudet", styles.list_h3, "Vuokranantaja sitoutuu toimittamaan sovittuna ajankohtana Vuokraajalle erikseen sovittava (liite) määrä tanssimattoja."),
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                pdf.ListItem("Blaa Blaa", styles.list_h3, "Etc."),
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            ]),
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            pdf.ListItem("Tätä sopimusta ja sitä koskevia erimielisyyksiä koskevat määräykset", styles.list_h2, None, list_seq(), [
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                pdf.ListItem("Sopimuksen voimassaolo", styles.list_h3, "Sopimus on osapuolia sitova sen jälkeen, kun osapuolet ovat sen allekirjoittaneet."),
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                pdf.ListItem("Muutosten tekeminen", styles.list_h3, "Muutokset sopimukseen on tehtävä kirjallisesti molempien osapuolten kesken."),
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                pdf.ListItem("Blaa Blaa", styles.list_h3, "Etc."),
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            ]),
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        ])
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        from reportlab.platypus import Paragraph as p
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        elements = [
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                p("Vuokrasopimus", styles.h1),
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                p("Teekkarispeksi ry AV-tekniikka", styles.h3),
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        ] + list(tree.render_pdf()) + [
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                p("Nouto", styles.h2),
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                p("\t\tAika: _______________\tPaikka: _______________", styles.text),
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                p("Palautus", styles.h2),
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                p("\t\tAika: _______________\tPaikka: _______________", styles.text),
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                pdf.SignatureBlock(("Vuokranantaja", "Vuokraaja"), ("%(column)s", "Nimen selvennys", "Aika ja paikka"), {
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                    ('Vuokranantaja', 'Nimen selvennys'): "Joel Pirttimaa",
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                    ('Vuokranantaja', 'Aika ja paikka'): 'Otaniemi, %(today)s',
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                    ('Vuokraaja', 'Aika ja paikka'): 'Otaniemi, %(today)s',
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                }),
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        ]
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        # render elements to buf as PDF code
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        pdf_code = doc.render_string(elements)
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        return Response(pdf_code, mimetype='application/pdf')
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class Index (PageHandler) :
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    DATA = (
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        (100, "Top A", []),
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        (200, "Top B", [
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            (210, "Mid BA", [
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                (211, "Sub BAA", []),
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                (212, "Sub BAB", []),
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            ]),
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            (220, "Mid BB", []),
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        ]),
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        (300, "Top C", [
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            (310, "Mid CA", []),
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            (320, "Mid CB", []),
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        ]),
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    )
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    def render (self) :
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        # build data set
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        data = self.DATA
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        def render_item (id, text, children) :
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            return tags.li(
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                tags.div(class_='item')(
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                    # item text
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                    tags.a(tags.input(type='checkbox', name_=id, checked=(
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                        'checked' if self.request.form.get(str(id)) else None
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                    )), text, class_='text'),
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                ),
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                # children
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                tags.ul(render_item(*item) for item in children if item) if children else None,
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                # 
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                class_=('more open' if children else None),
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            )
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        # render it
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        return (
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            tags.h3("Item list"),
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            tags.form(action='.', method='post')(
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                tags.ul(class_='treelist')(render_item(*item) for item in data),
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                tags.input(type='submit'),
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            ),
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        )
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