Injecting the render_template function to sanic apps and templates

sanic-render-template.py

from sanic import Sanic, Blueprint
from jinja2 import Environment, PackageLoader, select_autoescape
from sanic.response import html


def get_package_name():
    return __name__.split('.')[0]


class InjectJinjaSupport(object):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.env = Environment(
            loader=PackageLoader(get_package_name(), 'templates'),
            autoescape=select_autoescape([
                'html', 'xml', 'tpl'
            ])
        )

    def render_template(self, template, **kwargs):
        return html(
            self.env.get_template(template).render(
                kwargs
            )
        )


class SanicWithJinja(InjectJinjaSupport, Sanic):
    pass


class BlueprintWithJinja(InjectJinjaSupport, Blueprint):
    pass