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# Since this package contains a "django" module, this is required on Python 2.
from __future__ import absolute_import
import sys
import jinja2
from django.conf import settings
from django.template import TemplateDoesNotExist, TemplateSyntaxError
from django.utils import six
from django.utils.module_loading import import_string
from .base import BaseEngine
from .utils import csrf_input_lazy, csrf_token_lazy
class Jinja2(BaseEngine):
app_dirname = 'jinja2'
def __init__(self, params):
params = params.copy()
options = params.pop('OPTIONS').copy()
super(Jinja2, self).__init__(params)
environment = options.pop('environment', 'jinja2.Environment')
environment_cls = import_string(environment)
options.setdefault('autoescape', True)
options.setdefault('loader', jinja2.FileSystemLoader(self.template_dirs))
options.setdefault('auto_reload', settings.DEBUG)
options.setdefault('undefined',
jinja2.DebugUndefined if settings.DEBUG else jinja2.Undefined)
self.env = environment_cls(**options)
def from_string(self, template_code):
return Template(self.env.from_string(template_code))
def get_template(self, template_name):
try:
return Template(self.env.get_template(template_name))
except jinja2.TemplateNotFound as exc:
six.reraise(TemplateDoesNotExist, TemplateDoesNotExist(exc.args),
sys.exc_info()[2])
except jinja2.TemplateSyntaxError as exc:
six.reraise(TemplateSyntaxError, TemplateSyntaxError(exc.args),
sys.exc_info()[2])
class Template(object):
def __init__(self, template):
self.template = template
def render(self, context=None, request=None):
if context is None:
context = {}
if request is not None:
context['request'] = request
context['csrf_input'] = csrf_input_lazy(request)
context['csrf_token'] = csrf_token_lazy(request)
return self.template.render(**context)
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