19.0 purchase global discount mekav

purchase_discount/__init__.py

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+from . import models
+from . import wizard

purchase_discount/__manifest__.py

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+{
+    'name': 'purchase_dicount',
+    'description': "Add function for disscount",
+    'author': "meet kavathiya",
+    'website': "https://www.odoo.com/",
+    'category': "Real-estate",
+    'version': "0.1",
+    'application': True,
+    'installable': True,
+    'depends': ['purchase'],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/purchase_order_view.xml',
+        'wizard/purchase_order_discount_view.xml'
+    ],
+    'assets': {},
+    'license': 'LGPL-3',
+}

purchase_discount/models/__init__.py

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+from . import purchase_order

purchase_discount/models/purchase_order.py

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+from odoo import models
+
+
+class InheritedPurchaseOrder(models.Model):
+    _inherit = 'purchase.order'
+
+    def action_open_discount_wizard(self):
+        self.ensure_one()
+        return {
+            'name': "Discount",
+            'type': 'ir.actions.act_window',
+            'res_model': 'purchase.order.discount',
+            'view_mode': 'form',
+            'target': 'new',
+        }

purchase_discount/security/ir.model.access.csv

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+id,name,model_id/id,group_id/id,perm_read,perm_write,perm_create,perm_unlink
+access_purchase_order_discount,access_purchase_order_discount,model_purchase_order_discount,base.group_user,1,1,1,1

purchase_discount/views/purchase_order_view.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="inherited_purchase_view_form" model="ir.ui.view">
+        <field name="name">purchase.view.form.inherit.purchase.discount</field>
+        <field name="model">purchase.order</field>
+        <field name="inherit_id" ref="purchase.purchase_order_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='order_line']" position="after">
+                <div class="d-flex justify-content-end mt-2 mb-2">
+                    <button string="Discount" name="action_open_discount_wizard" type="object" class="btn btn-secondary"/>
+                </div>
+            </xpath>
+        </field>
+    </record>
+</odoo>

purchase_discount/wizard/__init__.py

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+from . import purchase_order_discount

purchase_discount/wizard/purchase_order_discount.py

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+from odoo import api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class PurchaseOrderDiscount(models.TransientModel):
+    _name = 'purchase.order.discount'
+    _description = "Discount Wizard"
+
+    purchase_order_id = fields.Many2one(
+        'purchase.order',
+        default=lambda self: self.env.context.get('active_id'),
+        required=True,
+    )
+    discount_percentage = fields.Float(string="Percentage")
+    discount_type = fields.Selection(
+        selection=[
+            ('percentage', "%"),
+            ('amount', "₹"),
+        ],
+        default='percentage',
+    )
+    percentage = fields.Float(compute='_compute_initial_discount')
+
+    @api.constrains('discount_type', 'discount_percentage')
+    def _check_discount_amount(self):
+        for wizard in self:
+            if (
+                (wizard.discount_type in ('percentage')
+                and wizard.discount_percentage > 100.0)
+                or (wizard.discount_type in ('amount')
+                and wizard.discount_percentage > wizard.purchase_order_id.amount_untaxed)
+            ):
+                raise ValidationError("Invalid discount amount")
+
+    @api.depends('discount_type', 'discount_percentage')
+    def _compute_initial_discount(self):
+        if self.discount_type == 'amount':
+            if self.purchase_order_id.amount_untaxed == 0:
+                raise ValidationError("No more discount possible")
+            self.percentage = (
+                self.discount_percentage * 100 / self.purchase_order_id.amount_untaxed
+            )
+        else:
+            self.percentage = self.discount_percentage
+
+    def action_apply_discount(self):
+        self.ensure_one()
+        if self.discount_type == 'amount':
+            self.purchase_order_id.order_line.write(
+                {
+                    'discount': (
+                        self.discount_percentage
+                        * 100
+                        / self.purchase_order_id.amount_untaxed
+                    )
+                }
+            )
+        else:
+            self.purchase_order_id.order_line.write(
+                {'discount': self.discount_percentage}
+            )

purchase_discount/wizard/purchase_order_discount_view.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+
+    <record id="purchase_order_line_wizard_form" model="ir.ui.view">
+        <field name="name">purchase.order.discount.form</field>
+        <field name="model">purchase.order.discount</field>
+        <field name="arch" type="xml">
+            <form>
+                <sheet>
+                    <!-- <field name="purchase_order_id" invisible="1"/> -->
+                    <field name="discount_percentage" nolabel="1"/>
+                    <field name="discount_type" nolabel="1"/>
+                    <field name="percentage" class='text-muted' nolabel="1"/>
+                </sheet>
+                <footer>
+                    <button type="object" string="Apply" name="action_apply_discount" class="btn btn-primary" data-hotkey="q"/>
+                    <button special="cancel" string="Discard" class="btn btn-secondary" data-hotkey="x"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+
+</odoo>