from __future__ import absolute_import
import os
import logging
from django.contrib.staticfiles.storage import staticfiles_storage, HashedFilesMixin
from django.contrib.staticfiles.finders import find as find_static
from django.core.serializers.json import DjangoJSONEncoder
from django.utils.safestring import mark_safe
from django.utils.html import escapejs
from django.conf import settings
from react_render.core import render_component as render_core
from react_render.core import DEFAULT_SERVICE_URL
SERVICE_URL = getattr(settings, 'REACT_SERVICE_URL', DEFAULT_SERVICE_URL)
FAIL_SAFE = getattr(settings, 'REACT_FAIL_SAFE', False)
log = logging.getLogger('react-render-client')
class RenderedComponent(object):
def __init__(self, output, path_to_source, props, json_encoder):
self.output = output
self.path_to_source = path_to_source
self.props = props
self.json_encoder = json_encoder
def __str__(self):
return mark_safe(self.output)
def __unicode__(self):
return mark_safe(self.output)
def render_props(self):
if self.props:
encoded = escapejs(self.json_encoder(self.props))
return mark_safe("JSON.parse('{0}')".format(encoded))
return '{}'
def render_component(path_to_source, props=None, to_static_markup=False, json_encoder=None):
if not os.path.isabs(path_to_source):
# If its using the manifest staticfiles storage, to the hashed name.
# eg. js/hello.js -> js/hello.d0bf07ff5f07.js
if isinstance(staticfiles_storage, HashedFilesMixin):
try:
path_to_source = staticfiles_storage.stored_name(path_to_source)
except ValueError:
# Couldn't find it.
pass
# first, attempt to resolve at STATIC_ROOT if the file was collected
abs_path = os.path.join(settings.STATIC_ROOT or '', path_to_source)
if os.path.exists(abs_path):
path_to_source = abs_path
else:
# Otherwise, resolve it using finders
path_to_source = find_static(path_to_source) or path_to_source
if json_encoder is None:
json_encoder = DjangoJSONEncoder().encode
try:
html = render_core(path_to_source, props, to_static_markup, json_encoder, service_url=SERVICE_URL)
except:
if not FAIL_SAFE:
raise
log.exception('Error while rendering %s', path_to_source)
html = ''
return RenderedComponent(html, path_to_source, props, json_encoder)
