652 lines
29 KiB
Python
652 lines
29 KiB
Python
# -*- coding: utf-8 -*-
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# Part of Odoo. See LICENSE file for full copyright and licensing details.
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import base64
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import hashlib
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import io
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import itertools
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import logging
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import mimetypes
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import os
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import re
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import uuid
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from collections import defaultdict
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from PIL import Image
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from odoo import api, fields, models, tools, _
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from odoo.exceptions import AccessError, ValidationError, UserError
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from odoo.tools import config, human_size, ImageProcess, str2bool
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from odoo.tools.mimetypes import guess_mimetype
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from odoo.osv import expression
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_logger = logging.getLogger(__name__)
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class IrAttachment(models.Model):
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"""Attachments are used to link binary files or url to any openerp document.
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External attachment storage
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---------------------------
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The computed field ``datas`` is implemented using ``_file_read``,
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``_file_write`` and ``_file_delete``, which can be overridden to implement
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other storage engines. Such methods should check for other location pseudo
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uri (example: hdfs://hadoopserver).
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The default implementation is the file:dirname location that stores files
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on the local filesystem using name based on their sha1 hash
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"""
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_name = 'ir.attachment'
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_description = 'Attachment'
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_order = 'id desc'
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def _compute_res_name(self):
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for attachment in self:
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if attachment.res_model and attachment.res_id:
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record = self.env[attachment.res_model].browse(attachment.res_id)
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attachment.res_name = record.display_name
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else:
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attachment.res_name = False
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@api.model
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def _storage(self):
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return self.env['ir.config_parameter'].sudo().get_param('ir_attachment.location', 'file')
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@api.model
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def _filestore(self):
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return config.filestore(self._cr.dbname)
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@api.model
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def _get_storage_domain(self):
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# domain to retrieve the attachments to migrate
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return {
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'db': [('store_fname', '!=', False)],
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'file': [('db_datas', '!=', False)],
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}[self._storage()]
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@api.model
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def force_storage(self):
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"""Force all attachments to be stored in the currently configured storage"""
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if not self.env.is_admin():
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raise AccessError(_('Only administrators can execute this action.'))
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# Migrate only binary attachments and bypass the res_field automatic
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# filter added in _search override
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self.search(expression.AND([
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self._get_storage_domain(),
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['&', ('type', '=', 'binary'), '|', ('res_field', '=', False), ('res_field', '!=', False)]
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]))._migrate()
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def _migrate(self):
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record_count = len(self)
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storage = self._storage().upper()
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for index, attach in enumerate(self):
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_logger.debug("Migrate attachment %s/%s to %s", index + 1, record_count, storage)
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# pass mimetype, to avoid recomputation
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attach.write({'raw': attach.raw, 'mimetype': attach.mimetype})
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@api.model
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def _full_path(self, path):
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# sanitize path
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path = re.sub('[.]', '', path)
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path = path.strip('/\\')
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return os.path.join(self._filestore(), path)
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@api.model
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def _get_path(self, bin_data, sha):
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# retro compatibility
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fname = sha[:3] + '/' + sha
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full_path = self._full_path(fname)
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if os.path.isfile(full_path):
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return fname, full_path # keep existing path
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# scatter files across 256 dirs
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# we use '/' in the db (even on windows)
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fname = sha[:2] + '/' + sha
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full_path = self._full_path(fname)
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dirname = os.path.dirname(full_path)
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if not os.path.isdir(dirname):
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os.makedirs(dirname)
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# prevent sha-1 collision
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if os.path.isfile(full_path) and not self._same_content(bin_data, full_path):
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raise UserError("The attachment is colliding with an existing file.")
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return fname, full_path
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@api.model
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def _file_read(self, fname):
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full_path = self._full_path(fname)
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try:
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with open(full_path, 'rb') as f:
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return f.read()
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except (IOError, OSError):
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_logger.info("_read_file reading %s", full_path, exc_info=True)
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return b''
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@api.model
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def _file_write(self, bin_value, checksum):
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fname, full_path = self._get_path(bin_value, checksum)
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if not os.path.exists(full_path):
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try:
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with open(full_path, 'wb') as fp:
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fp.write(bin_value)
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# add fname to checklist, in case the transaction aborts
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self._mark_for_gc(fname)
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except IOError:
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_logger.info("_file_write writing %s", full_path, exc_info=True)
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return fname
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@api.model
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def _file_delete(self, fname):
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# simply add fname to checklist, it will be garbage-collected later
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self._mark_for_gc(fname)
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def _mark_for_gc(self, fname):
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""" Add ``fname`` in a checklist for the filestore garbage collection. """
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# we use a spooldir: add an empty file in the subdirectory 'checklist'
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full_path = os.path.join(self._full_path('checklist'), fname)
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if not os.path.exists(full_path):
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dirname = os.path.dirname(full_path)
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if not os.path.isdir(dirname):
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with tools.ignore(OSError):
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os.makedirs(dirname)
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open(full_path, 'ab').close()
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@api.autovacuum
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def _gc_file_store(self):
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""" Perform the garbage collection of the filestore. """
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if self._storage() != 'file':
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return
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# Continue in a new transaction. The LOCK statement below must be the
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# first one in the current transaction, otherwise the database snapshot
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# used by it may not contain the most recent changes made to the table
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# ir_attachment! Indeed, if concurrent transactions create attachments,
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# the LOCK statement will wait until those concurrent transactions end.
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# But this transaction will not see the new attachements if it has done
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# other requests before the LOCK (like the method _storage() above).
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cr = self._cr
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cr.commit()
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# prevent all concurrent updates on ir_attachment while collecting,
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# but only attempt to grab the lock for a little bit, otherwise it'd
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# start blocking other transactions. (will be retried later anyway)
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cr.execute("SET LOCAL lock_timeout TO '10s'")
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cr.execute("LOCK ir_attachment IN SHARE MODE")
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# retrieve the file names from the checklist
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checklist = {}
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for dirpath, _, filenames in os.walk(self._full_path('checklist')):
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dirname = os.path.basename(dirpath)
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for filename in filenames:
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fname = "%s/%s" % (dirname, filename)
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checklist[fname] = os.path.join(dirpath, filename)
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# Clean up the checklist. The checklist is split in chunks and files are garbage-collected
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# for each chunk.
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removed = 0
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for names in cr.split_for_in_conditions(checklist):
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# determine which files to keep among the checklist
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cr.execute("SELECT store_fname FROM ir_attachment WHERE store_fname IN %s", [names])
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whitelist = set(row[0] for row in cr.fetchall())
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# remove garbage files, and clean up checklist
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for fname in names:
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filepath = checklist[fname]
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if fname not in whitelist:
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try:
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os.unlink(self._full_path(fname))
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_logger.debug("_file_gc unlinked %s", self._full_path(fname))
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removed += 1
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except (OSError, IOError):
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_logger.info("_file_gc could not unlink %s", self._full_path(fname), exc_info=True)
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with tools.ignore(OSError):
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os.unlink(filepath)
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# commit to release the lock
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cr.commit()
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_logger.info("filestore gc %d checked, %d removed", len(checklist), removed)
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@api.depends('store_fname', 'db_datas', 'file_size')
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@api.depends_context('bin_size')
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def _compute_datas(self):
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if self._context.get('bin_size'):
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for attach in self:
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attach.datas = human_size(attach.file_size)
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return
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for attach in self:
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attach.datas = base64.b64encode(attach.raw or b'')
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@api.depends('store_fname', 'db_datas')
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def _compute_raw(self):
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for attach in self:
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if attach.store_fname:
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attach.raw = attach._file_read(attach.store_fname)
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else:
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attach.raw = attach.db_datas
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def _inverse_raw(self):
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self._set_attachment_data(lambda a: a.raw or b'')
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def _inverse_datas(self):
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self._set_attachment_data(lambda attach: base64.b64decode(attach.datas or b''))
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def _set_attachment_data(self, asbytes):
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for attach in self:
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# compute the fields that depend on datas
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bin_data = asbytes(attach)
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vals = self._get_datas_related_values(bin_data, attach.mimetype)
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# take current location in filestore to possibly garbage-collect it
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fname = attach.store_fname
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# write as superuser, as user probably does not have write access
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super(IrAttachment, attach.sudo()).write(vals)
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if fname:
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self._file_delete(fname)
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def _get_datas_related_values(self, data, mimetype):
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values = {
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'file_size': len(data),
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'checksum': self._compute_checksum(data),
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'index_content': self._index(data, mimetype),
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'store_fname': False,
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'db_datas': data,
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}
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if data and self._storage() != 'db':
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values['store_fname'] = self._file_write(data, values['checksum'])
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values['db_datas'] = False
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return values
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def _compute_checksum(self, bin_data):
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""" compute the checksum for the given datas
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:param bin_data : datas in its binary form
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"""
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# an empty file has a checksum too (for caching)
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return hashlib.sha1(bin_data or b'').hexdigest()
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@api.model
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def _same_content(self, bin_data, filepath):
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BLOCK_SIZE = 1024
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with open(filepath, 'rb') as fd:
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i = 0
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while True:
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data = fd.read(BLOCK_SIZE)
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if data != bin_data[i * BLOCK_SIZE:(i + 1) * BLOCK_SIZE]:
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return False
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if not data:
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break
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i += 1
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return True
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def _compute_mimetype(self, values):
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""" compute the mimetype of the given values
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:param values : dict of values to create or write an ir_attachment
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:return mime : string indicating the mimetype, or application/octet-stream by default
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"""
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mimetype = None
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if values.get('mimetype'):
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mimetype = values['mimetype']
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if not mimetype and values.get('name'):
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mimetype = mimetypes.guess_type(values['name'])[0]
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if not mimetype and values.get('url'):
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mimetype = mimetypes.guess_type(values['url'].split('?')[0])[0]
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if not mimetype or mimetype == 'application/octet-stream':
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raw = None
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if values.get('raw'):
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raw = values['raw']
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elif values.get('datas'):
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raw = base64.b64decode(values['datas'])
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if raw:
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mimetype = guess_mimetype(raw)
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return mimetype or 'application/octet-stream'
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def _postprocess_contents(self, values):
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ICP = self.env['ir.config_parameter'].sudo().get_param
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supported_subtype = ICP('base.image_autoresize_extensions', 'png,jpeg,gif,bmp,tif').split(',')
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mimetype = values['mimetype'] = self._compute_mimetype(values)
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_type, _subtype = mimetype.split('/')
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is_image_resizable = _type == 'image' and _subtype in supported_subtype
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if is_image_resizable and (values.get('datas') or values.get('raw')):
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is_raw = values.get('raw')
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# Can be set to 0 to skip the resize
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max_resolution = ICP('base.image_autoresize_max_px', '1920x1920')
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if str2bool(max_resolution, True):
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try:
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img = fn_quality = False
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if is_raw:
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img = ImageProcess(False, verify_resolution=False)
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img.image = Image.open(io.BytesIO(values['raw']))
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img.original_format = (img.image.format or '').upper()
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fn_quality = img.image_quality
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else: # datas
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img = ImageProcess(values['datas'], verify_resolution=False)
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fn_quality = img.image_quality_base64
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w, h = img.image.size
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nw, nh = map(int, max_resolution.split('x'))
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if w > nw or h > nh:
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img.resize(nw, nh)
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quality = int(ICP('base.image_autoresize_quality', 80))
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values[is_raw and 'raw' or 'datas'] = fn_quality(quality=quality)
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except UserError as e:
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# Catch error during test where we provide fake image
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# raise UserError(_("This file could not be decoded as an image file. Please try with a different file."))
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_logger.info('Post processing ignored : %s', e)
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return values
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def _check_contents(self, values):
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mimetype = values['mimetype'] = self._compute_mimetype(values)
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xml_like = 'ht' in mimetype or ( # hta, html, xhtml, etc.
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'xml' in mimetype and # other xml (svg, text/xml, etc)
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not 'openxmlformats' in mimetype) # exception for Office formats
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user = self.env.context.get('binary_field_real_user', self.env.user)
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force_text = (xml_like and (not user._is_system() or
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self.env.context.get('attachments_mime_plainxml')))
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if force_text:
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values['mimetype'] = 'text/plain'
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if not self.env.context.get('image_no_postprocess'):
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values = self._postprocess_contents(values)
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return values
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@api.model
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def _index(self, bin_data, file_type):
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""" compute the index content of the given binary data.
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This is a python implementation of the unix command 'strings'.
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:param bin_data : datas in binary form
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:return index_content : string containing all the printable character of the binary data
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"""
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index_content = False
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if file_type:
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index_content = file_type.split('/')[0]
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if index_content == 'text': # compute index_content only for text type
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words = re.findall(b"[\x20-\x7E]{4,}", bin_data)
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index_content = b"\n".join(words).decode('ascii')
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return index_content
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@api.model
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def get_serving_groups(self):
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""" An ir.attachment record may be used as a fallback in the
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http dispatch if its type field is set to "binary" and its url
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field is set as the request's url. Only the groups returned by
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this method are allowed to create and write on such records.
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"""
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return ['base.group_system']
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name = fields.Char('Name', required=True)
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description = fields.Text('Description')
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res_name = fields.Char('Resource Name', compute='_compute_res_name')
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res_model = fields.Char('Resource Model', readonly=True, help="The database object this attachment will be attached to.")
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res_field = fields.Char('Resource Field', readonly=True)
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res_id = fields.Many2oneReference('Resource ID', model_field='res_model',
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readonly=True, help="The record id this is attached to.")
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company_id = fields.Many2one('res.company', string='Company', change_default=True,
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default=lambda self: self.env.company)
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type = fields.Selection([('url', 'URL'), ('binary', 'File')],
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string='Type', required=True, default='binary', change_default=True,
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help="You can either upload a file from your computer or copy/paste an internet link to your file.")
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url = fields.Char('Url', index=True, size=1024)
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public = fields.Boolean('Is public document')
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# for external access
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access_token = fields.Char('Access Token', groups="base.group_user")
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# the field 'datas' is computed and may use the other fields below
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raw = fields.Binary(string="File Content (raw)", compute='_compute_raw', inverse='_inverse_raw')
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datas = fields.Binary(string='File Content (base64)', compute='_compute_datas', inverse='_inverse_datas')
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db_datas = fields.Binary('Database Data', attachment=False)
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store_fname = fields.Char('Stored Filename')
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file_size = fields.Integer('File Size', readonly=True)
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checksum = fields.Char("Checksum/SHA1", size=40, index=True, readonly=True)
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mimetype = fields.Char('Mime Type', readonly=True)
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index_content = fields.Text('Indexed Content', readonly=True, prefetch=False)
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def _auto_init(self):
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res = super(IrAttachment, self)._auto_init()
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tools.create_index(self._cr, 'ir_attachment_res_idx',
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self._table, ['res_model', 'res_id'])
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return res
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@api.constrains('type', 'url')
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def _check_serving_attachments(self):
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if self.env.is_admin():
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return
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for attachment in self:
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# restrict writing on attachments that could be served by the
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# ir.http's dispatch exception handling
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# XDO note: this should be done in check(write), constraints for access rights?
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# XDO note: if read on sudo, read twice, one for constraints, one for _inverse_datas as user
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if attachment.type == 'binary' and attachment.url:
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has_group = self.env.user.has_group
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if not any(has_group(g) for g in attachment.get_serving_groups()):
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raise ValidationError("Sorry, you are not allowed to write on this document")
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@api.model
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def check(self, mode, values=None):
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""" Restricts the access to an ir.attachment, according to referred mode """
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if self.env.is_superuser():
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return True
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# Always require an internal user (aka, employee) to access to a attachment
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if not (self.env.is_admin() or self.env.user.has_group('base.group_user')):
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raise AccessError(_("Sorry, you are not allowed to access this document."))
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# collect the records to check (by model)
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model_ids = defaultdict(set) # {model_name: set(ids)}
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if self:
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# DLE P173: `test_01_portal_attachment`
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self.env['ir.attachment'].flush(['res_model', 'res_id', 'create_uid', 'public', 'res_field'])
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self._cr.execute('SELECT res_model, res_id, create_uid, public, res_field FROM ir_attachment WHERE id IN %s', [tuple(self.ids)])
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for res_model, res_id, create_uid, public, res_field in self._cr.fetchall():
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if public and mode == 'read':
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continue
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if not self.env.is_system() and (res_field or (not res_id and create_uid != self.env.uid)):
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raise AccessError(_("Sorry, you are not allowed to access this document."))
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if not (res_model and res_id):
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continue
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model_ids[res_model].add(res_id)
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if values and values.get('res_model') and values.get('res_id'):
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model_ids[values['res_model']].add(values['res_id'])
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# check access rights on the records
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for res_model, res_ids in model_ids.items():
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# ignore attachments that are not attached to a resource anymore
|
|
# when checking access rights (resource was deleted but attachment
|
|
# was not)
|
|
if res_model not in self.env:
|
|
continue
|
|
if res_model == 'res.users' and len(res_ids) == 1 and self.env.uid == list(res_ids)[0]:
|
|
# by default a user cannot write on itself, despite the list of writeable fields
|
|
# e.g. in the case of a user inserting an image into his image signature
|
|
# we need to bypass this check which would needlessly throw us away
|
|
continue
|
|
records = self.env[res_model].browse(res_ids).exists()
|
|
# For related models, check if we can write to the model, as unlinking
|
|
# and creating attachments can be seen as an update to the model
|
|
access_mode = 'write' if mode in ('create', 'unlink') else mode
|
|
records.check_access_rights(access_mode)
|
|
records.check_access_rule(access_mode)
|
|
|
|
|
|
def _read_group_allowed_fields(self):
|
|
return ['type', 'company_id', 'res_id', 'create_date', 'create_uid', 'name', 'mimetype', 'id', 'url', 'res_field', 'res_model']
|
|
|
|
@api.model
|
|
def read_group(self, domain, fields, groupby, offset=0, limit=None, orderby=False, lazy=True):
|
|
"""Override read_group to add res_field=False in domain if not present."""
|
|
if not fields:
|
|
raise AccessError(_("Sorry, you must provide fields to read on attachments"))
|
|
groupby = [groupby] if isinstance(groupby, str) else groupby
|
|
if any('(' in field for field in fields + groupby):
|
|
raise AccessError(_("Sorry, the syntax 'name:agg(field)' is not available for attachments"))
|
|
if not any(item[0] in ('id', 'res_field') for item in domain):
|
|
domain.insert(0, ('res_field', '=', False))
|
|
allowed_fields = self._read_group_allowed_fields()
|
|
fields_set = set(field.split(':')[0] for field in fields + groupby)
|
|
if not self.env.is_system() and (not fields or fields_set.difference(allowed_fields)):
|
|
raise AccessError(_("Sorry, you are not allowed to access these fields on attachments."))
|
|
return super().read_group(domain, fields, groupby, offset=offset, limit=limit, orderby=orderby, lazy=lazy)
|
|
|
|
@api.model
|
|
def _search(self, args, offset=0, limit=None, order=None, count=False, access_rights_uid=None):
|
|
# add res_field=False in domain if not present; the arg[0] trick below
|
|
# works for domain items and '&'/'|'/'!' operators too
|
|
discard_binary_fields_attachments = False
|
|
if not any(arg[0] in ('id', 'res_field') for arg in args):
|
|
discard_binary_fields_attachments = True
|
|
args.insert(0, ('res_field', '=', False))
|
|
|
|
ids = super(IrAttachment, self)._search(args, offset=offset, limit=limit, order=order,
|
|
count=False, access_rights_uid=access_rights_uid)
|
|
|
|
if self.env.is_superuser():
|
|
# rules do not apply for the superuser
|
|
return len(ids) if count else ids
|
|
|
|
if not ids:
|
|
return 0 if count else []
|
|
|
|
# Work with a set, as list.remove() is prohibitive for large lists of documents
|
|
# (takes 20+ seconds on a db with 100k docs during search_count()!)
|
|
orig_ids = ids
|
|
ids = set(ids)
|
|
|
|
# For attachments, the permissions of the document they are attached to
|
|
# apply, so we must remove attachments for which the user cannot access
|
|
# the linked document.
|
|
# Use pure SQL rather than read() as it is about 50% faster for large dbs (100k+ docs),
|
|
# and the permissions are checked in super() and below anyway.
|
|
model_attachments = defaultdict(lambda: defaultdict(set)) # {res_model: {res_id: set(ids)}}
|
|
binary_fields_attachments = set()
|
|
self._cr.execute("""SELECT id, res_model, res_id, public, res_field FROM ir_attachment WHERE id IN %s""", [tuple(ids)])
|
|
for row in self._cr.dictfetchall():
|
|
if not row['res_model'] or row['public']:
|
|
continue
|
|
# model_attachments = {res_model: {res_id: set(ids)}}
|
|
model_attachments[row['res_model']][row['res_id']].add(row['id'])
|
|
# Should not retrieve binary fields attachments if not explicitly required
|
|
if discard_binary_fields_attachments and row['res_field']:
|
|
binary_fields_attachments.add(row['id'])
|
|
|
|
if binary_fields_attachments:
|
|
ids.difference_update(binary_fields_attachments)
|
|
|
|
# To avoid multiple queries for each attachment found, checks are
|
|
# performed in batch as much as possible.
|
|
for res_model, targets in model_attachments.items():
|
|
if res_model not in self.env:
|
|
continue
|
|
if not self.env[res_model].check_access_rights('read', False):
|
|
# remove all corresponding attachment ids
|
|
ids.difference_update(itertools.chain(*targets.values()))
|
|
continue
|
|
# filter ids according to what access rules permit
|
|
target_ids = list(targets)
|
|
allowed = self.env[res_model].with_context(active_test=False).search([('id', 'in', target_ids)])
|
|
for res_id in set(target_ids).difference(allowed.ids):
|
|
ids.difference_update(targets[res_id])
|
|
|
|
# sort result according to the original sort ordering
|
|
result = [id for id in orig_ids if id in ids]
|
|
|
|
# If the original search reached the limit, it is important the
|
|
# filtered record set does so too. When a JS view receive a
|
|
# record set whose length is below the limit, it thinks it
|
|
# reached the last page. To avoid an infinite recursion due to the
|
|
# permission checks the sub-call need to be aware of the number of
|
|
# expected records to retrieve
|
|
if len(orig_ids) == limit and len(result) < self._context.get('need', limit):
|
|
need = self._context.get('need', limit) - len(result)
|
|
result.extend(self.with_context(need=need)._search(args, offset=offset + len(orig_ids),
|
|
limit=limit, order=order, count=count,
|
|
access_rights_uid=access_rights_uid)[:limit - len(result)])
|
|
|
|
return len(result) if count else list(result)
|
|
|
|
def _read(self, fields):
|
|
self.check('read')
|
|
return super(IrAttachment, self)._read(fields)
|
|
|
|
def write(self, vals):
|
|
self.check('write', values=vals)
|
|
# remove computed field depending of datas
|
|
for field in ('file_size', 'checksum'):
|
|
vals.pop(field, False)
|
|
if 'mimetype' in vals or 'datas' in vals or 'raw' in vals:
|
|
vals = self._check_contents(vals)
|
|
return super(IrAttachment, self).write(vals)
|
|
|
|
def copy(self, default=None):
|
|
self.check('write')
|
|
return super(IrAttachment, self).copy(default)
|
|
|
|
def unlink(self):
|
|
if not self:
|
|
return True
|
|
self.check('unlink')
|
|
|
|
# First delete in the database, *then* in the filesystem if the
|
|
# database allowed it. Helps avoid errors when concurrent transactions
|
|
# are deleting the same file, and some of the transactions are
|
|
# rolled back by PostgreSQL (due to concurrent updates detection).
|
|
to_delete = set(attach.store_fname for attach in self if attach.store_fname)
|
|
res = super(IrAttachment, self).unlink()
|
|
for file_path in to_delete:
|
|
self._file_delete(file_path)
|
|
|
|
return res
|
|
|
|
@api.model_create_multi
|
|
def create(self, vals_list):
|
|
record_tuple_set = set()
|
|
for values in vals_list:
|
|
# remove computed field depending of datas
|
|
for field in ('file_size', 'checksum'):
|
|
values.pop(field, False)
|
|
values = self._check_contents(values)
|
|
raw, datas = values.pop('raw', None), values.pop('datas', None)
|
|
if raw or datas:
|
|
if isinstance(raw, str):
|
|
# b64decode handles str input but raw needs explicit encoding
|
|
raw = raw.encode()
|
|
values.update(self._get_datas_related_values(
|
|
raw or base64.b64decode(datas or b''),
|
|
values['mimetype']
|
|
))
|
|
|
|
# 'check()' only uses res_model and res_id from values, and make an exists.
|
|
# We can group the values by model, res_id to make only one query when
|
|
# creating multiple attachments on a single record.
|
|
record_tuple = (values.get('res_model'), values.get('res_id'))
|
|
record_tuple_set.add(record_tuple)
|
|
for record_tuple in record_tuple_set:
|
|
(res_model, res_id) = record_tuple
|
|
self.check('create', values={'res_model':res_model, 'res_id':res_id})
|
|
return super().create(vals_list)
|
|
|
|
def _post_add_create(self):
|
|
pass
|
|
|
|
def generate_access_token(self):
|
|
tokens = []
|
|
for attachment in self:
|
|
if attachment.access_token:
|
|
tokens.append(attachment.access_token)
|
|
continue
|
|
access_token = self._generate_access_token()
|
|
attachment.write({'access_token': access_token})
|
|
tokens.append(access_token)
|
|
return tokens
|
|
|
|
def _generate_access_token(self):
|
|
return str(uuid.uuid4())
|
|
|
|
@api.model
|
|
def action_get(self):
|
|
return self.env['ir.actions.act_window']._for_xml_id('base.action_attachment')
|
|
|
|
@api.model
|
|
def get_serve_attachment(self, url, extra_domain=None, extra_fields=None, order=None):
|
|
domain = [('type', '=', 'binary'), ('url', '=', url)] + (extra_domain or [])
|
|
fieldNames = ['__last_update', 'datas', 'mimetype'] + (extra_fields or [])
|
|
return self.search_read(domain, fieldNames, order=order, limit=1)
|