QWebException: "13 Permission denied" Error in Qweb report(with barcode)

Odoo is the world's easiest all-in-one management software.
It includes hundreds of business apps:

CRM
e-Commerce
Accounting
Inventory
PoS
Project management
MRP

Take the tour

All Posts People Badges

Tags (View all)

odoo v14 accounting v15 odoo16features

About this forum

Help

QWebException: "13 Permission denied" Error in Qweb report(with barcode)

barcode QWebException

3 Replies

6082 Views

bhavik vyas

I have developed one qweb report with barcode .I have tested it on four different system and it works perfectly ,but on client's server it gives following error during report printing

File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 315, in render_element
 g_inner.append(self.render_node(current_node, qwebcontext))
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 294, in render_node
 result = self.render_element(element, template_attributes, generated_attributes, qwebcontext)
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 315, in render_element
 g_inner.append(self.render_node(current_node, qwebcontext))
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 294, in render_node
 result = self.render_element(element, template_attributes, generated_attributes, qwebcontext)
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 315, in render_element
 g_inner.append(self.render_node(current_node, qwebcontext))
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 274, in render_node
 self, element, attribute_name, attribute_value, qwebcontext)
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 351, in render_att_att
 return [(attribute_name[6:], self.eval(attribute_value, qwebcontext))]
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 197, in eval
 raise_qweb_exception(message="Could not evaluate expression %r" % expr, expression=expr, template=template)
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 194, in eval
 return qwebcontext.safe_eval(expr)
 File "/opt/openerp/odoo/openerp/addons/base/ir/ir_qweb.py", line 80, in safe_eval
 return eval(expr, None, locals_dict, nocopy=True, locals_builtins=True)
 File "/opt/openerp/odoo/openerp/tools/safe_eval.py", line 313, in safe_eval
 return eval(c, globals_dict, locals_dict)
 File "", line 1, in <module>
 File "/home/ols1/extra_addons/product_barcode_qweb/report/product_barcode_print.py", line 62, in _generateBarcode
 Code128().getImage(barcode_string, path="./").save(fp, "PNG")
 File "/home/ols1/extra_addons/product_barcode_qweb/report/Code128.py", line 234, in getImage
 decodeFontFile(courB08_pil ,path+"courB08.pil")
 File "/home/ols1/extra_addons/product_barcode_qweb/report/Code128.py", line 276, in decodeFontFile
 open (file, "wb").write(decompress(decodestring(data)))
QWebException: "13
Permission denied" while evaluating
"'data:image/png;base64,'+generateBarcode(label_data['default_code'])"

bhavik vyas

Author

Stuck around this problem from last 3 days!Even a single clue will be great help!

Temur

Best Answer

see the fragment from your error log in the question post above:

File "/home/ols1/extra_addons/product_barcode_qweb/report/product_barcode_print.py", line 62, in _generateBarcode
 Code128().getImage(barcode_string, path="./").save(fp, "PNG")

here you try to save file to current directory, but you do not have necessary permissions on the current directory. I suggest following changes in product_barcode_print.py:

import os

from openerp.tools import config

my_data_directory = os.path.join(config['data_dir'], "custom_filestore", "your_module_name")

if not os.path.exists(my_data_directory):
    os.makedirs(my_data_directory)

then, in the code at line 62: Code128().getImage(barcode_string, path="./").save(fp, "PNG") -Use my_data_directory instead of "./" -local directory:

Code128().getImage(barcode_string, path=my_data_directory ).save(fp, "PNG")

also adapt the rest of code to accordingly use my_data_directory instead of local directory to read from and write to file(s) you create in your module. that's it, after this change you save files to directory where you have all necessary permissions.

NOTE:

Above changes should be enough in your case, but, in the best case you should append database name to data_directory path, so you'll have separated directory for each database in a multidatabase environment. in v8 it may be implemented as:

@api.model
def get_custom_data_dir(self):
 return os.path.join(config['data_dir'], "custom_filestore", "module_name", self.env.cr.dbname)

optionally you can use this approach, if it's necessary.

bhavik vyas

Author

Thank you very much Temur! you understood my issues perfectly! i followed your instructions and issue solved!

Temur

You're welcome!

jhony

This is pretty simple @bhavik you don't have required permission on file.

Enjoying the discussion? Don't just read, join in!

Create an account today to enjoy exclusive features and engage with our awesome community!

Related Posts	Replies	Views
Find product by name scanning barcode & regex segmentation barcode	0 Dec 24	13
Can I associate Field Service with odoo's Barcode model? barcode	1 Oct 24	832
Remove Barcode Price from Print Barcode? barcode	2 Aug 24	329
Barcode: how limit the product name print in label to fisrt 15 characters? barcode	1 Feb 24	554
Zebra/Datawedge Barcode Software Solved barcode	4 Jan 24	8462

This question has been flagged

Enjoying the discussion? Don't just read, join in!