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product_print_zpl_barcode: Add support for barcode generation

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Add support for EAN-8 (in additional to EAN-13)
This commit is contained in:
Alexis de Lattre
2021-01-22 15:00:14 +01:00
parent 20af679569
commit 5496aa38f8
7 changed files with 140 additions and 14 deletions
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3
product_print_zpl_barcode/__init__.py
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@@ -1,3 +1,2 @@
# -*- coding: utf-8 -*-
from . import models
from . import wizard

1
product_print_zpl_barcode/__manifest__.py
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@@ -43,6 +43,7 @@ This module has been written by Alexis de Lattre from Akretion
'security/ir.model.access.csv',
'wizard/product_print_zpl_barcode_view.xml',
'views/product.xml',
'data/barcode_sequence.xml',
],
'installable': True,
}

26
product_print_zpl_barcode/data/barcode_sequence.xml Normal file
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@@ -0,0 +1,26 @@
<?xml version="1.0" encoding="utf-8"?>
<odoo>
<data noupdate="1">
<!--
GS1 prefixes : https://www.gs1.org/standards/id-keys/company-prefix
200 - 299 : Used to issue GS1 Restricted Circulation Numbers
within a geographic region (MO defined)
21, 22 and 23 are already used by Odoo for Weight, Price & Discount barcodes
So I use 298 by default
Another option would to be use a small country at the other side of the world,
for example 623 : Brunei
-->
<record id="private_product_barcode_seq" model="ir.sequence">
<field name="name">Private Product Barcode</field>
<field name="code">private.product.barcode</field>
<field name="prefix">298</field>
<field name="padding">9</field>
<field name="number_next">1</field>
<field name="company_id" eval="False"/>
</record>
</data>
</odoo>

1
product_print_zpl_barcode/models/__init__.py Normal file
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@@ -0,0 +1 @@
from . import product

67
product_print_zpl_barcode/models/product.py Normal file
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@@ -0,0 +1,67 @@
# -*- coding: utf-8 -*-
# Copyright 2020 Akretion France (http://www.akretion.com/)
# @author: Alexis de Lattre <alexis.delattre@akretion.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
from odoo import api, fields, models, _
from odoo.exceptions import UserError
from stdnum.ean import calc_check_digit
class ProductTemplate(models.Model):
_inherit = "product.template"
must_print_barcode = fields.Boolean(
string="Must Print Barcode",
help="Enable that option for products for which you must "
"print a barcode upon reception in stock.")
def generate_barcode_from_product_template(self):
self.ensure_one()
if self.product_variant_count != 1:
raise UserError(_(
"You cannot call the method "
"generate_barcode_from_product_template on product '%s' "
"because it has %d variants and not just one.")
% (self.display_name, self.product_variant_count))
return self.product_variant_ids[0].generate_barcode_from_product_product()
def print_zpl_barcode_from_product_template(self):
self.ensure_one()
if self.product_variant_count != 1:
raise UserError(_(
"You cannot call the method "
"print_zpl_barcode_from_product_template on product '%s' "
"because it has %d variants and not just one.")
% (self.display_name, self.product_variant_count))
action = self.env.ref(
'product_print_zpl_barcode.product_print_zpl_barcode_action').read()[0]
action['context'] = {
'active_id': self.product_variant_ids[0].id,
'active_model': 'product.product',
}
return action
class ProductProduct(models.Model):
_inherit = 'product.product'
def generate_barcode_from_product_product(self):
self.ensure_one()
if self.barcode:
raise UserError(_(
"The product '%s' already has a barcode.") % self.display_name)
barcode_without_checksum = self.env['ir.sequence'].next_by_code(
'private.product.barcode')
if len(barcode_without_checksum) not in (7, 12):
raise UserError(_(
"The sequence 'private.product.barcode' is not properly "
"configured. The generated sequence should have 7 digits "
"(for EAN-8) or 12 digits (for EAN-13). "
"It currently has %d digits." % len(barcode_without_checksum)))
checksum = calc_check_digit(barcode_without_checksum)
barcode = barcode_without_checksum + str(checksum)
self.write({
'barcode': barcode,
'must_print_barcode': True,
})

31
product_print_zpl_barcode/views/product.xml
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@@ -1,20 +1,45 @@
<?xml version="1.0" encoding="utf-8"?>
<!--
© 2016 Akretion (http://www.akretion.com/)
Copyright 2020-2021 Akretion France (http://www.akretion.com/)
@author Alexis de Lattre <alexis.delattre@akretion.com>
License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
-->
<odoo>
<record id="product_template_form_view" model="ir.ui.view">
<field name="model">product.template</field>
<field name="inherit_id" ref="product.product_template_form_view"/>
<field name="arch" type="xml">
<div name="options" position="inside">
<div id="must_print_barcode">
<field name="must_print_barcode"/>
<label for="must_print_barcode"/>
</div>
</div>
</field>
</record>
<record id="product_template_only_form_view" model="ir.ui.view">
<field name="model">product.template</field>
<field name="inherit_id" ref="product.product_template_only_form_view"/>
<field name="arch" type="xml">
<header position="inside">
<button name="generate_barcode_from_product_template" type="object" string="Generate Barcode" attrs="{'invisible': ['|', ('product_variant_count', '>', 1), ('barcode', '!=', False)]}"/>
<button name="print_zpl_barcode_from_product_template" type="object" string="Print Barcode" groups="base_report_to_printer.printing_group_user" attrs="{'invisible': ['|', ('product_variant_count', '>', 1), ('barcode', '=', False)]}"/>
</header>
</field>
</record>
<record id="product_normal_form_view" model="ir.ui.view">
<field name="name">generate.weight.price.barcode.product.product.form</field>
<field name="model">product.product</field>
<field name="inherit_id" ref="product.product_normal_form_view" />
<field name="arch" type="xml">
<header position="inside">
<button name="%(product_print_zpl_barcode.product_print_zpl_barcode_action)d" type="action" string="Print Barcode" groups="base_report_to_printer.printing_group_user"/>
<button name="generate_barcode_from_product_product" type="object" string="Generate Barcode" attrs="{'invisible': [('barcode', '!=', False)]}"/>
<button name="%(product_print_zpl_barcode.product_print_zpl_barcode_action)d" type="action" string="Print Barcode" groups="base_report_to_printer.printing_group_user" attrs="{'invisible': [('barcode', '=', False)]}"/>
</header>
</field>
</record>

25
product_print_zpl_barcode/wizard/product_print_zpl_barcode.py
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@@ -5,6 +5,7 @@
from odoo import api, fields, models, _
from odoo.exceptions import UserError
from odoo.tools import float_compare, float_is_zero
from stdnum.ean import is_valid
import base64
import re
@@ -172,7 +173,8 @@ class ProductPrintZplBarcode(models.TransientModel):
# print "barcode FINAL=", barcode
zpl_unicode = self._price_weight_barcode_type_zpl() % {
'product_name': self.product_name,
'ean13_no_checksum': barcode[:12],
'ean_zpl_command': len(self.barcode) == 8 and 'B8' or 'BE',
'ean_no_checksum': barcode[:-1],
'price_uom': self.price_uom,
'price': self.price,
'currency_symbol': self.currency_id.symbol,
@@ -189,7 +191,7 @@ class ProductPrintZplBarcode(models.TransientModel):
@api.model
def _price_weight_barcode_type_zpl(self):
label = u"""
label = """
^XA
^CI28
^PW304
@@ -201,7 +203,7 @@ class ProductPrintZplBarcode(models.TransientModel):
^FO15,30^FB270,3,0,C^FD%(product_name)s^FS
^CF0,25
^FO15,75^FB270,1,0,C^FD%(quantity).3f %(uom_name)s %(price_uom).2f %(currency_symbol)s/%(uom_name)s^FS
^FO60,110^BEN,50^FD%(ean13_no_checksum)s^FS
^FO60,110^%(ean_zpl_command)sN,50^FD%(ean_no_checksum)s^FS
^PQ%(copies)s
^XZ
"""
@@ -209,7 +211,7 @@ class ProductPrintZplBarcode(models.TransientModel):
@api.model
def _product_barcode_type_zpl(self):
label = u"""
label = """
^XA
^CI28
^PW304
@@ -219,7 +221,7 @@ class ProductPrintZplBarcode(models.TransientModel):
^FO15,0^FB270,1,0,C^FD%(price_uom).2f %(currency_symbol)s^FS
^CF0,20
^FO15,30^FB270,3,0,C^FD%(product_name)s^FS
^FO60,100^BEN,60^FD%(ean13_no_checksum)s^FS
^FO60,100^%(ean_zpl_command)sN,60^FD%(ean_no_checksum)s^FS
^PQ%(copies)s
^XZ
"""
@@ -228,7 +230,8 @@ class ProductPrintZplBarcode(models.TransientModel):
def _prepare_product_barcode_type(self):
zpl_unicode = self._product_barcode_type_zpl() % {
'product_name': self.product_name,
'ean13_no_checksum': self.barcode[:12],
'ean_zpl_command': len(self.barcode) == 8 and 'B8' or 'BE',
'ean_no_checksum': self.barcode[:-1],
'price_uom': self.price_uom,
'currency_symbol': self.currency_id.symbol, # symbol is a required field
'copies': self.copies,
@@ -242,12 +245,16 @@ class ProductPrintZplBarcode(models.TransientModel):
def generate(self):
assert self.barcode
if len(self.barcode) != 13:
if len(self.barcode) not in (8, 13):
raise UserError(_(
"This wizard only supports EAN13 for the moment. Barcode '%s' "
"has %d digits instead of 13") % (
"This wizard only supports EAN8 and EAN13 for the moment. "
"Barcode '%s' has %d digits.") % (
self.barcode,
len(self.barcode)))
if not is_valid(self.barcode):
raise UserError(_(
"The barcode '%s' is not a valid EAN barcode "
"(wrong checksum).") % self.barcode)
if not self.copies:
raise UserError(_("The number of copies cannot be 0"))
if self.barcode_type in ('price', 'weight'):