When creating reports with barcode labels, there is simply no space
for excessive quiescence zones. Let's give control of layout to the
report template, not to the barcode renderer.
If an exception during the merges (such as a file descriptor overrun), we
would otherwise depend on the next garbage collection to close the
files. But the next GC may never come.
For example if we ran out of OS file descriptors during merge, all future
requests will crash for the same reason, and the process will never recover
because the GC will never run.
Much easier to explicitly close the files all the time.
Up to this revision, barcodes set in reports are generated
using the controller `/report/barcode`,
using a `img` HTML tag, e.g. (from `report_location_barcode`)
```
<img t-if="not o.loc_barcode"
t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s'
% ('Code128', o.name, 600, 100)" style="width:300px;height:50px"/>
``
This `/report/barcode` route is set as `auth='user'`, meaning
the route can only be accessed by signed in users.
When wkhtmltopdf prints a report containing such a barcode,
it calls this `report/barcode` route, making sure to pass
the request session in the cookies, so wkhtmltopdf
uses the same session than the one of the user. This is
needed, as only users can access this `report/barcode/` route.
This session is passed in `report.py`, in the method
`_run_wkhtmltopdf`, thanks to the --cookie wkhtmltopdf
parameter.
Nevertheless, if a report is printed through the website
front-end, as public (without a signed in user), the request
session is not associated to a signed in user, and therefore
the route `/report/barcode` refuses the access / redirects
to the login, making it impossible to print a report
containing a barcode without being signed in. This even
if the report is printed as `sudo` through a controller
(as this is the session of the not signed in user which is passed,
not a session associated to `sudo).
Fixes#10621
opw-667797
It looks like reportlab doesn't handle well
UPC-A barcodes.
As UPC-A barcodes became EAN13 barcodes when
adding a `0` to the beginning of the barcode,
and the render is the same, we ask reportlab
a EAN13 barcode type when a UPC-A barcode is asked,
making sure to add the `0` automatically first.
From Wikipedia:
```
The EAN was developed as a superset of UPC,
adding an extra digit to the beginning of every UPC number.
[...]
the original rules for UPC are treated as a '0'
if read as EAN-13.
A UPC barcode XXXXXXXXXXXX therefore is the EAN-13 barcode 0XXXXXXXXXXXX.
It is possible to prefix a UPC barcode with a 0;
they become EAN-13 rather than UPC-A.
This does not change the check digit.
All point-of-sale systems can now understand both equally.
```
opw-670560
Specifically, when one API implementation calls the other one, it has to call
the method *from the same class*. Otherwise, overriding the method may result
in an infinite recursion. Consider:
class A(Model):
_name = 'stuff'
@api.v8
def foo(self):
return 42
@api.v7
def foo(self, cr, uid, context=None):
return self.browse(cr, uid, [], context).foo()
class B(Model):
_inherit = 'stuff'
def foo(self, cr, uid, context=None):
return super(B, self).foo(cr, uid, context=context) + 1
and now call: `env['stuff'].foo()`. This invokes `B.foo` (new-API), which
calls `B.foo` (old-API), which calls `A.foo` (old-API), which calls `B.foo`
(new-API) instead of `A.foo`!
This issue would not be present if old-API `A.foo` was defined as:
@api.v7
def foo(self, cr, uid, context=None):
return A.foo(self.browse(cr, uid, [], context))
Harald Welte
Odoo Translation Bot
Olivier Dony
Denis Ledoux
Raphael Collet