def _image(self,
cr,
uid,
model,
id,
field,
response,
max_width=maxint,
max_height=maxint,
cache=None,
context=None):
""" Fetches the requested field and ensures it does not go above
(max_width, max_height), resizing it if necessary.
Resizing is bypassed if the object provides a $field_big, which will
be interpreted as a pre-resized version of the base field.
If the record is not found or does not have the requested field,
returns a placeholder image via :meth:`~._image_placeholder`.
Sets and checks conditional response parameters:
* :mailheader:`ETag` is always set (and checked)
* :mailheader:`Last-Modified is set iif the record has a concurrency
field (``__last_update``)
The requested field is assumed to be base64-encoded image data in
all cases.
"""
Model = self.pool[model]
id = int(id)
ids = Model.search(cr, uid, [('id', '=', id)], context=context)
if not ids and 'website_published' in Model._fields:
ids = Model.search(cr,
openerp.SUPERUSER_ID,
[('id', '=', id),
('website_published', '=', True)],
context=context)
if not ids:
return self._image_placeholder(response)
concurrency = '__last_update'
[record] = Model.read(cr,
openerp.SUPERUSER_ID, [id], [concurrency, field],
context=context)
if concurrency in record:
server_format = openerp.tools.misc.DEFAULT_SERVER_DATETIME_FORMAT
try:
response.last_modified = datetime.datetime.strptime(
record[concurrency], server_format + '.%f')
except ValueError:
# just in case we have a timestamp without microseconds
response.last_modified = datetime.datetime.strptime(
record[concurrency], server_format)
# Field does not exist on model or field set to False
if not record.get(field):
# FIXME: maybe a field which does not exist should be a 404?
return self._image_placeholder(response)
response.set_etag(hashlib.sha1(record[field]).hexdigest())
response.make_conditional(request.httprequest)
if cache:
response.cache_control.max_age = cache
response.expires = int(time.time() + cache)
# conditional request match
if response.status_code == 304:
return response
if model == 'ir.attachment' and field == 'url' and field in record:
path = record[field].strip('/')
# Check that we serve a file from within the module
if os.path.normpath(path).startswith('..'):
return self._image_placeholder(response)
# Check that the file actually exists
path = path.split('/')
resource = openerp.modules.get_module_resource(*path)
if not resource:
return self._image_placeholder(response)
data = open(resource, 'rb').read()
else:
data = record[field].decode('base64')
image = Image.open(cStringIO.StringIO(data))
response.mimetype = Image.MIME[image.format]
filename = '%s_%s.%s' % (model.replace('.', '_'), id, str(
image.format).lower())
response.headers[
'Content-Disposition'] = 'inline; filename="%s"' % filename
if (not max_width) and (not max_height):
response.data = data
return response
w, h = image.size
max_w = int(max_width) if max_width else maxint
max_h = int(max_height) if max_height else maxint
if w < max_w and h < max_h:
response.data = data
else:
size = (max_w, max_h)
img = image_resize_and_sharpen(image,
size,
preserve_aspect_ratio=True)
image_save_for_web(img, response.stream, format=image.format)
# invalidate content-length computed by make_conditional as
# writing to response.stream does not do it (as of werkzeug 0.9.3)
del response.headers['Content-Length']
return response
def _image(self, cr, uid, model, id, field, response, max_width=maxint, max_height=maxint, cache=None, context=None):
""" Fetches the requested field and ensures it does not go above
(max_width, max_height), resizing it if necessary.
Resizing is bypassed if the object provides a $field_big, which will
be interpreted as a pre-resized version of the base field.
If the record is not found or does not have the requested field,
returns a placeholder image via :meth:`~._image_placeholder`.
Sets and checks conditional response parameters:
* :mailheader:`ETag` is always set (and checked)
* :mailheader:`Last-Modified is set iif the record has a concurrency
field (``__last_update``)
The requested field is assumed to be base64-encoded image data in
all cases.
"""
Model = self.pool[model]
id = int(id)
ids = Model.search(cr, uid,
[('id', '=', id)], context=context)
if not ids and 'website_published' in Model._fields:
ids = Model.search(cr, openerp.SUPERUSER_ID,
[('id', '=', id), ('website_published', '=', True)], context=context)
if not ids:
return self._image_placeholder(response)
concurrency = '__last_update'
[record] = Model.read(cr, openerp.SUPERUSER_ID, [id],
[concurrency, field],
context=context)
if concurrency in record:
server_format = openerp.tools.misc.DEFAULT_SERVER_DATETIME_FORMAT
try:
response.last_modified = datetime.datetime.strptime(
record[concurrency], server_format + '.%f')
except ValueError:
# just in case we have a timestamp without microseconds
response.last_modified = datetime.datetime.strptime(
record[concurrency], server_format)
# Field does not exist on model or field set to False
if not record.get(field):
# FIXME: maybe a field which does not exist should be a 404?
return self._image_placeholder(response)
response.set_etag(hashlib.sha1(record[field]).hexdigest())
response.make_conditional(request.httprequest)
if cache:
response.cache_control.max_age = cache
response.expires = int(time.time() + cache)
# conditional request match
if response.status_code == 304:
return response
data = record[field].decode('base64')
image = Image.open(cStringIO.StringIO(data))
response.mimetype = Image.MIME[image.format]
filename = '%s_%s.%s' % (model.replace('.', '_'), id, str(image.format).lower())
response.headers['Content-Disposition'] = 'inline; filename="%s"' % filename
if (not max_width) and (not max_height):
response.data = data
return response
w, h = image.size
max_w = int(max_width) if max_width else maxint
max_h = int(max_height) if max_height else maxint
if w < max_w and h < max_h:
response.data = data
else:
size = (max_w, max_h)
img = image_resize_and_sharpen(image, size, preserve_aspect_ratio=True)
image_save_for_web(img, response.stream, format=image.format)
# invalidate content-length computed by make_conditional as
# writing to response.stream does not do it (as of werkzeug 0.9.3)
del response.headers['Content-Length']
return response
def _image(
self, cr, uid, model, id_or_ids, field, response, max_width=maxint, max_height=maxint, cache=None, context=None
):
""" Fetches the requested field and ensures it does not go above
(max_width, max_height), resizing it if necessary.
Resizing is bypassed if the object provides a $field_big, which will
be interpreted as a pre-resized version of the base field.
If the record is not found or does not have the requested field,
returns a placeholder image via :meth:`~._image_placeholder`.
Sets and checks conditional response parameters:
* :mailheader:`ETag` is always set (and checked)
* :mailheader:`Last-Modified is set iif the record has a concurrency
field (``__last_update``)
The requested field is assumed to be base64-encoded image data in
all cases.
"""
Model = self.pool[model]
ids = isinstance(id_or_ids, (list, tuple)) and id_or_ids or [int(id_or_ids)]
ids = Model.search(cr, uid, [("id", "in", ids)], context=context)
if not ids:
return self._image_placeholder(response)
concurrency = "__last_update"
[record] = Model.read(cr, openerp.SUPERUSER_ID, ids, [concurrency, field], context=context)
if concurrency in record:
server_format = openerp.tools.misc.DEFAULT_SERVER_DATETIME_FORMAT
try:
response.last_modified = datetime.datetime.strptime(record[concurrency], server_format + ".%f")
except ValueError:
# just in case we have a timestamp without microseconds
response.last_modified = datetime.datetime.strptime(record[concurrency], server_format)
# Field does not exist on model or field set to False
if not record.get(field):
# FIXME: maybe a field which does not exist should be a 404?
return self._image_placeholder(response)
response.set_etag(hashlib.sha1(record[field]).hexdigest())
response.make_conditional(request.httprequest)
if cache:
response.cache_control.max_age = cache
response.expires = int(time.time() + cache)
# conditional request match
if response.status_code == 304:
return response
if model == "ir.attachment" and field == "url" and field in record:
path = record[field].strip("/")
# Check that we serve a file from within the module
if os.path.normpath(path).startswith(".."):
return self._image_placeholder(response)
# Check that the file actually exists
path = path.split("/")
resource = openerp.modules.get_module_resource(*path)
if not resource:
return self._image_placeholder(response)
data = open(resource, "rb").read()
else:
data = record[field].decode("base64")
image = Image.open(cStringIO.StringIO(data))
response.mimetype = Image.MIME[image.format]
filename = "%s_%s.%s" % (model.replace(".", "_"), ids[0], str(image.format).lower())
response.headers["Content-Disposition"] = 'inline; filename="%s"' % filename
if (not max_width) and (not max_height):
response.data = data
return response
w, h = image.size
max_w = int(max_width) if max_width else maxint
max_h = int(max_height) if max_height else maxint
if w < max_w and h < max_h:
response.data = data
else:
size = (max_w, max_h)
img = image_resize_and_sharpen(image, size, preserve_aspect_ratio=True)
image_save_for_web(img, response.stream, format=image.format)
# invalidate content-length computed by make_conditional as
# writing to response.stream does not do it (as of werkzeug 0.9.3)
del response.headers["Content-Length"]
return response
