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# -*- coding: utf-8 -*-
# © 2014 Serv. Tecnol. Avanzados (http://www.serviciosbaeza.com)
# Pedro M. Baeza <pedro.baeza@serviciosbaeza.com>
# © 2015 Antiun Ingeniería S.L. - Jairo Llopis
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
import base64
import urllib
import os
import logging
from openerp import models, fields, api, exceptions, _
from openerp import tools
_logger = logging.getLogger(__name__)
class Image(models.Model):
_name = "base_multi_image.image"
_order = "sequence, owner_model, owner_id, id"
_sql_constraints = [
('uniq_name_owner', 'UNIQUE(owner_id, owner_model, name)',
_('A document can have only one image with the same name.')),
]
owner_id = fields.Integer(
"Owner",
required=True)
owner_model = fields.Char(
required=True)
storage = fields.Selection(
[('url', 'URL'), ('file', 'OS file'), ('db', 'Database')],
required=True)
name = fields.Char(
'Image title',
translate=True)
filename = fields.Char()
extension = fields.Char(
'File extension',
readonly=True)
file_db_store = fields.Binary(
'Image stored in database',
filters='*.png,*.jpg,*.gif')
path = fields.Char(
"Image path",
help="Image path")
url = fields.Char(
'Image remote URL')
image_main = fields.Binary(
"Full-sized image",
compute="_get_image")
image_medium = fields.Binary(
"Medium-sized image",
compute="_get_image_sizes",
help="Medium-sized image. It is automatically resized as a "
"128 x 128 px image, with aspect ratio preserved, only when the "
"image exceeds one of those sizes. Use this field in form views "
"or kanban views.")
image_small = fields.Binary(
"Small-sized image",
compute="_get_image_sizes",
help="Small-sized image. It is automatically resized as a 64 x 64 px "
"image, with aspect ratio preserved. Use this field anywhere a "
"small image is required.")
comments = fields.Text(
'Comments',
translate=True)
sequence = fields.Integer(
default=10)
show_technical = fields.Boolean(
compute="_show_technical")
@api.multi
@api.depends('storage', 'path', 'file_db_store', 'url')
def _get_image(self):
"""Get image data from the right storage type."""
for s in self:
s.image_main = getattr(s, "_get_image_from_%s" % s.storage)()
@api.multi
@api.depends("owner_id", "owner_model")
def _show_technical(self):
"""Know if you need to show the technical fields."""
self.show_technical = all(
"default_owner_%s" % f not in self.env.context
for f in ("id", "model"))
@api.multi
def _get_image_from_db(self):
return self.file_db_store
@api.multi
def _get_image_from_file(self):
if self.path and os.path.exists(self.path):
try:
with open(self.path, 'rb') as f:
return base64.b64encode(f.read())
except Exception as e:
_logger.error("Can not open the image %s, error : %s",
self.path, e, exc_info=True)
else:
_logger.error("The image %s doesn't exist ", self.path)
return False
@api.multi
def _get_image_from_url(self):
return self._get_image_from_url_cached(self.url)
@api.model
@tools.ormcache(skiparg=1)
def _get_image_from_url_cached(self, url):
"""Allow to download an image and cache it by its URL."""
if url:
try:
(filename, header) = urllib.urlretrieve(url)
with open(filename, 'rb') as f:
return base64.b64encode(f.read())
except:
_logger.error("URL %s cannot be fetched", url,
exc_info=True)
return False
@api.multi
@api.depends('image_main')
def _get_image_sizes(self):
for s in self:
try:
vals = tools.image_get_resized_images(
s.with_context(bin_size=False).image_main)
except:
vals = {"image_medium": False,
"image_small": False}
s.update(vals)
@api.model
def _make_name_pretty(self, name):
return name.replace('_', ' ').capitalize()
@api.onchange('url')
def _onchange_url(self):
if self.url:
filename = self.url.split('/')[-1]
self.name, self.extension = os.path.splitext(filename)
self.name = self._make_name_pretty(self.name)
@api.onchange('path')
def _onchange_path(self):
if self.path:
self.name, self.extension = os.path.splitext(os.path.basename(
self.path))
self.name = self._make_name_pretty(self.name)
@api.onchange('filename')
def _onchange_filename(self):
if self.filename:
self.name, self.extension = os.path.splitext(self.filename)
self.name = self._make_name_pretty(self.name)
@api.constrains('storage', 'url')
def _check_url(self):
if self.storage == 'url' and not self.url:
raise exceptions.ValidationError(
'You must provide an URL for the image.')
@api.constrains('storage', 'path')
def _check_path(self):
if self.storage == 'file' and not self.path:
raise exceptions.ValidationError(
'You must provide a file path for the image.')
@api.constrains('storage', 'file_db_store')
def _check_store(self):
if self.storage == 'db' and not self.file_db_store:
raise exceptions.ValidationError(
'You must provide an attached file for the image.')