2 files changed, 88 insertions, 0 deletions
diff --git a/addons/account_tax_python/models/__init__.py b/addons/account_tax_python/models/__init__.py
new file mode 100644
index 00000000..728620e3
--- /dev/null
+++ b/addons/account_tax_python/models/__init__.py
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import account_tax
diff --git a/addons/account_tax_python/models/account_tax.py b/addons/account_tax_python/models/account_tax.py
new file mode 100644
index 00000000..435be47f
--- /dev/null
+++ b/addons/account_tax_python/models/account_tax.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models, fields, api
+from odoo.tools.safe_eval import safe_eval
+
+
+class AccountTaxPython(models.Model):
+    _inherit = "account.tax"
+
+    amount_type = fields.Selection(selection_add=[
+        ('code', 'Python Code')
+    ], ondelete={'code': lambda recs: recs.write({'amount_type': 'percent', 'active': False})})
+
+    python_compute = fields.Text(string='Python Code', default="result = price_unit * 0.10",
+        help="Compute the amount of the tax by setting the variable 'result'.\n\n"
+            ":param base_amount: float, actual amount on which the tax is applied\n"
+            ":param price_unit: float\n"
+            ":param quantity: float\n"
+            ":param company: res.company recordset singleton\n"
+            ":param product: product.product recordset singleton or None\n"
+            ":param partner: res.partner recordset singleton or None")
+    python_applicable = fields.Text(string='Applicable Code', default="result = True",
+        help="Determine if the tax will be applied by setting the variable 'result' to True or False.\n\n"
+            ":param price_unit: float\n"
+            ":param quantity: float\n"
+            ":param company: res.company recordset singleton\n"
+            ":param product: product.product recordset singleton or None\n"
+            ":param partner: res.partner recordset singleton or None")
+
+    def _compute_amount(self, base_amount, price_unit, quantity=1.0, product=None, partner=None):
+        self.ensure_one()
+        if product and product._name == 'product.template':
+            product = product.product_variant_id
+        if self.amount_type == 'code':
+            company = self.env.company
+            localdict = {'base_amount': base_amount, 'price_unit':price_unit, 'quantity': quantity, 'product':product, 'partner':partner, 'company': company}
+            safe_eval(self.python_compute, localdict, mode="exec", nocopy=True)
+            return localdict['result']
+        return super(AccountTaxPython, self)._compute_amount(base_amount, price_unit, quantity, product, partner)
+
+    def compute_all(self, price_unit, currency=None, quantity=1.0, product=None, partner=None, is_refund=False, handle_price_include=True):
+        taxes = self.filtered(lambda r: r.amount_type != 'code')
+        company = self.env.company
+        if product and product._name == 'product.template':
+            product = product.product_variant_id
+        for tax in self.filtered(lambda r: r.amount_type == 'code'):
+            localdict = self._context.get('tax_computation_context', {})
+            localdict.update({'price_unit': price_unit, 'quantity': quantity, 'product': product, 'partner': partner, 'company': company})
+            safe_eval(tax.python_applicable, localdict, mode="exec", nocopy=True)
+            if localdict.get('result', False):
+                taxes += tax
+        return super(AccountTaxPython, taxes).compute_all(price_unit, currency, quantity, product, partner, is_refund=is_refund, handle_price_include=handle_price_include)
+
+
+class AccountTaxTemplatePython(models.Model):
+    _inherit = 'account.tax.template'
+
+    amount_type = fields.Selection(selection_add=[
+        ('code', 'Python Code')
+    ], ondelete={'code': 'cascade'})
+
+    python_compute = fields.Text(string='Python Code', default="result = price_unit * 0.10",
+        help="Compute the amount of the tax by setting the variable 'result'.\n\n"
+            ":param base_amount: float, actual amount on which the tax is applied\n"
+            ":param price_unit: float\n"
+            ":param quantity: float\n"
+            ":param product: product.product recordset singleton or None\n"
+            ":param partner: res.partner recordset singleton or None")
+    python_applicable = fields.Text(string='Applicable Code', default="result = True",
+        help="Determine if the tax will be applied by setting the variable 'result' to True or False.\n\n"
+            ":param price_unit: float\n"
+            ":param quantity: float\n"
+            ":param product: product.product recordset singleton or None\n"
+            ":param partner: res.partner recordset singleton or None")
+
+    def _get_tax_vals(self, company, tax_template_to_tax):
+        """ This method generates a dictionnary of all the values for the tax that will be created.
+        """
+        self.ensure_one()
+        res = super(AccountTaxTemplatePython, self)._get_tax_vals(company, tax_template_to_tax)
+        res['python_compute'] = self.python_compute
+        res['python_applicable'] = self.python_applicable
+        return res