Warning: This document is for the development version of molten.

Source code for molten.contrib.templates

# This file is a part of molten.
#
# Copyright (C) 2018 CLEARTYPE SRL <bogdan@cleartype.io>
#
# molten is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at
# your option) any later version.
#
# molten is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from inspect import Parameter
from typing import Any

from molten import HTTP_200, Response

try:
    import jinja2
except ImportError:  # pragma: no cover
    raise ImportError("'jinja2' missing. Run 'pip install jinja2'.")


[docs]class Templates: """Renders jinja2 templates. """ __slots__ = ["environment"] def __init__(self, path: str) -> None: self.environment = jinja2.Environment( loader=jinja2.FileSystemLoader(path), )
[docs] def render(self, template_name: str, **context: Any) -> Response: """Find a template and render it. Parameters: template_name: The name of the template to render. \**context: Bindings passed to the template. """ template = self.environment.get_template(template_name) rendered_template = template.render(**context) return Response(HTTP_200, content=rendered_template, headers={ "content-type": "text/html", })
[docs]class TemplatesComponent: """A component that builds a jinja2 template renderer. Parameters: path: The path to a folder containing your templates. """ __slots__ = ["path"] is_cacheable = True is_singleton = True def __init__(self, path: str) -> None: self.path = path def can_handle_parameter(self, parameter: Parameter) -> bool: return parameter.annotation is Templates def resolve(self) -> Templates: return Templates(self.path)