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###################################################################################
#
# Copyright (c) 2017-2019 MuK IT GmbH.
#
# This file is part of MuK Filestore Field
# (see https://mukit.at).
#
# This program 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.
#
# This program 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/>.
#
###################################################################################
import io
import logging
import mimetypes
from odoo import models
from odoo.http import request, STATIC_CACHE
from odoo.exceptions import AccessError
_logger = logging.getLogger(__name__)
class FileIrHttp(models.AbstractModel):
_inherit = 'ir.http'
@classmethod
def file_content(cls, xmlid=None, model=None, id=None, field='content', unique=False,
filename=None, filename_field='content_fname', download=False,
mimetype=None, default_mimetype='application/octet-stream', env=None):
""" Get file, attachment or downloadable content
If the xmlid and id parameter is omitted, fetches the default value for the
binary field (via the default_get method), otherwise fetches the field for
that precise record.
:param str xmlid: xmlid of the record
:param str model: name of the model to fetch the binary from
:param int id: id of the record from which to fetch the binary
:param str field: binary field
:param bool unique: add a max-age for the cache control
:param str filename: choose a filename
:param str filename_field: if not create an filename with model-id-field
:param bool download: apply headers to download the file
:param str mimetype: mintype of the field (for headers)
:param str default_mimetype: default mintype if no mintype found
:param Environment env: by default use request.env
:returns: (status, headers, content)
"""
obj = None
env = env or request.env
if xmlid:
obj = cls._xmlid_to_obj(env, xmlid)
elif id and model in env.registry:
obj = env[model].browse(int(id))
if not obj or not obj.exists() or field not in obj:
return (404, [], None)
try:
last_update = obj['__last_update']
except AccessError:
return (403, [], None)
status, headers, content = None, [], None
content = obj.with_context({'stream': True})[field] or io.BytesIO()
if not filename:
if filename_field in obj:
filename = obj[filename_field]
else:
filename = "%s-%s-%s" % (obj._name, obj.id, field)
mimetype = 'mimetype' in obj and obj.mimetype or False
if not mimetype and filename:
mimetype = mimetypes.guess_type(filename)[0]
if not mimetype:
mimetype = default_mimetype
headers += [('Content-Type', mimetype), ('X-Content-Type-Options', 'nosniff')]
etag = bool(request) and request.httprequest.headers.get('If-None-Match')
retag = '"%s"' % obj.with_context({'checksum': True})[field] if content else ""
status = status or (304 if etag == retag else 200)
headers.append(('ETag', retag))
headers.append(('Cache-Control', 'max-age=%s' % (STATIC_CACHE if unique else 0)))
if download:
headers.append(('Content-Disposition', cls.content_disposition(filename)))
return (status, headers, content)