Initial commit of account_invoice_margin for 11.0

account_invoice_margin/models/account_invoice.py

@@ -0,0 +1,62 @@
+from odoo import api, fields, models
+from odoo.addons import decimal_precision as dp
+
+
+class AccountInvoiceLine(models.Model):
+    _inherit = "account.invoice.line"
+
+    margin = fields.Float(compute='_product_margin', digits=dp.get_precision('Product Price'), store=True)
+    purchase_price = fields.Float(string='Cost', digits=dp.get_precision('Product Price'))
+
+    def _compute_margin(self, invoice_id, product_id, product_uom_id, sale_line_ids):
+        # if sale_line_ids and don't re-browse
+        for line in sale_line_ids:
+            return line.purchase_price
+        frm_cur = invoice_id.company_currency_id
+        to_cur = invoice_id.currency_id
+        purchase_price = product_id.standard_price
+        if product_uom_id != product_id.uom_id:
+            purchase_price = product_id.uom_id._compute_price(purchase_price, product_uom_id)
+        ctx = self.env.context.copy()
+        ctx['date'] = invoice_id.date if invoice_id.date else fields.Date.context_today(invoice_id)
+        price = frm_cur.with_context(ctx).compute(purchase_price, to_cur, round=False)
+        return price
+
+    @api.onchange('product_id', 'uom_id')
+    def product_id_change_margin(self):
+        if not self.product_id or not self.uom_id:
+            return
+        self.purchase_price = self._compute_margin(self.invoice_id, self.product_id, self.uom_id, self.sale_line_ids)
+
+    @api.model
+    def create(self, vals):
+        line = super(AccountInvoiceLine, self).create(vals)
+        line.product_id_change_margin()
+        return line
+
+    @api.depends('product_id', 'purchase_price', 'quantity', 'price_unit', 'price_subtotal')
+    def _product_margin(self):
+        for line in self:
+            currency = line.invoice_id.currency_id
+            price = line.purchase_price
+            if line.product_id and not price:
+                date = line.invoice_id.date if line.invoice_id.date else fields.Date.context_today(line.invoice_id)
+                from_cur = line.invoice_id.company_currency_id.with_context(date=date)
+                price = from_cur.compute(line.product_id.standard_price, currency, round=False)
+ 
+            line.margin = currency.round(line.price_subtotal - (price * line.quantity))
+
+
+class AccountInvoice(models.Model):
+    _inherit = "account.invoice"
+
+    margin = fields.Monetary(compute='_product_margin',
+                             help="It gives profitability by calculating the difference between the Unit Price and the cost.",
+                             currency_field='currency_id',
+                             digits=dp.get_precision('Product Price'),
+                             store=True)
+
+    @api.depends('invoice_line_ids.margin')
+    def _product_margin(self):
+        for invoice in self:
+            invoice.margin = sum(invoice.invoice_line_ids.mapped('margin'))