19.0 vanilla

odoo-bringout-oca-ocb-product/product/models/product_combo.py

@@ -0,0 +1,79 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import _, api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class ProductCombo(models.Model):
+    _name = 'product.combo'
+    _description = "Product Combo"
+    _order = 'sequence, id'
+
+    name = fields.Char(string="Name", required=True)
+    sequence = fields.Integer(default=10, copy=False)
+    company_id = fields.Many2one(string="Company", comodel_name='res.company', index=True)
+    combo_item_ids = fields.One2many(
+        comodel_name='product.combo.item',
+        inverse_name='combo_id',
+        copy=True,
+    )
+    combo_item_count = fields.Integer(string="Product Count", compute='_compute_combo_item_count')
+    currency_id = fields.Many2one(comodel_name='res.currency', compute='_compute_currency_id')
+    base_price = fields.Float(
+        string="Combo Price",
+        help="The minimum price among the products in this combo. This value will be used to"
+             " prorate the price of this combo with respect to the other combos in a combo product."
+             " This heuristic ensures that whatever product the user chooses in a combo, it will"
+             " always be the same price.",
+        min_display_digits='Product Price',
+        compute='_compute_base_price',
+    )
+
+    @api.depends('combo_item_ids')
+    def _compute_combo_item_count(self):
+        # Initialize combo_item_count to 0 as _read_group won't return any results for new combos.
+        self.combo_item_count = 0
+        # Optimization to count the number of combo items in each combo.
+        for combo, item_count in self.env['product.combo.item']._read_group(
+            domain=[('combo_id', 'in', self.ids)],
+            groupby=['combo_id'],
+            aggregates=['__count'],
+        ):
+            combo.combo_item_count = item_count
+
+    @api.depends('company_id')
+    def _compute_currency_id(self):
+        main_company = self.env['res.company']._get_main_company()
+        for combo in self:
+            combo.currency_id = (
+                combo.company_id.sudo().currency_id or main_company.currency_id
+            )
+
+    @api.depends('combo_item_ids')
+    def _compute_base_price(self):
+        for combo in self:
+            combo.base_price = min(combo.combo_item_ids.mapped(
+                lambda item: item.currency_id._convert(
+                    from_amount=item.lst_price,
+                    to_currency=combo.currency_id,
+                    company=combo.company_id or self.env.company,
+                    date=self.env.cr.now(),
+                )
+            )) if combo.combo_item_ids else 0
+
+    @api.constrains('combo_item_ids')
+    def _check_combo_item_ids_not_empty(self):
+        if any(not combo.combo_item_ids for combo in self):
+            raise ValidationError(_("A combo choice must contain at least 1 product."))
+
+    @api.constrains('combo_item_ids')
+    def _check_combo_item_ids_no_duplicates(self):
+        for combo in self:
+            if len(combo.combo_item_ids.mapped('product_id')) < len(combo.combo_item_ids):
+                raise ValidationError(_("A combo choice can't contain duplicate products."))
+
+    @api.constrains('company_id')
+    def _check_company_id(self):
+        templates = self.env['product.template'].sudo().search([('combo_ids', 'in', self.ids)])
+        templates._check_company(fnames=['combo_ids'])
+        self.combo_item_ids._check_company(fnames=['product_id'])