handlers.py

# -*- coding: utf-8 -*-
import datetime
import webapp2
from webapp2_extras import jinja2


class BaseHandler(webapp2.RequestHandler):
    """
        BaseHandler for all requests all other handlers will
        extend this handler

    """
    @webapp2.cached_property
    def jinja2(self):
        return jinja2.get_jinja2(app=self.app)

    def render_template(self, template_name, template_values):
        self.response.write(self.jinja2.render_template(
            template_name, **template_values))

    def render_string(self, template_string, template_values):
        self.response.write(self.jinja2.environment.from_string(
            template_string).render(**template_values))


class PageHandler(BaseHandler):
    def root(self):
        now = datetime.datetime.now()
        ten_min_ago = now - datetime.timedelta(minutes=10)
        context = {
            'now': now,
            'ten_min_ago': ten_min_ago
        }
        return self.render_template('pages_test_filters.html', context)

    def test_string(self):
        context = {
            'now': datetime.datetime.now(),
        }
        return self.render_string('Now is {{ now|datetimeformat }}', context)