alchemyadmin / src / alchemyadmin /

from werkzeug import Request, Response
from werkzeug.routing import Map, Rule
from werkzeug.exceptions import HTTPException
from jinja2 import Environment, PackageLoader
from sqlalchemy.orm import sessionmaker, scoped_session
from formalchemy import Grid

default_template_env = Environment(loader=PackageLoader('alchemyadmin', 'templates'))

class Application(object):
    def __init__(self, settings, *models, **modelsdict):
        self.template_env = default_template_env
        self.models = modelsdict.copy()
        self.DBSession = scoped_session(sessionmaker())
        for m in models:
            self.models[m.__name__.lower()] = m

        urls = Map([
                Rule('/', endpoint='index'),
        self.grids = {}
        for m in self.models:
            urls.add(Rule('/' + m, endpoint='model_index', 
            self.grids[m] = grid = Grid(self.models[m])
        self.urls = urls

    def __call__(self, environ, start_response):
            adapter = self.urls.bind_to_environ(environ)
            endpoint, args = adapter.match()
            request = Request(environ)
            res = getattr(self, endpoint)(request, **args)
            return res(environ, start_response)
        except HTTPException, e:
            return e(environ, start_response)

    def index(self, request):
        res = Response(self.render('index.html', models=self.models),
        return res

    def model_index(self, request, model):
        rows = self.DBSession.query(self.models[model]).all()
        grid = self.grids[model].bind(instances=rows)
        res = Response(self.render('model/index.html', 
        return res

    def render(self, template_name, **kw):
        template = self.template_env.get_template(template_name)
        return template.render(**kw)
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