58 lines
3.0 KiB
Python
58 lines
3.0 KiB
Python
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from odoo import api, fields, models, _
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from odoo.exceptions import ValidationError
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class PosCombo(models.Model):
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"""
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This model is used to allow the pos user to create menus.
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This means that products can be grouped together and sold as a combo.
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ex: Create a product called `Burger Menu`
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- This product will have multiple combos associated with it, for ex:
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- Drinks - will contain the list of drinks from which the customer can choose
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- Main Course - will contain the list of main courses from which the customer can choose
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- Dessert - will contain the list of desserts from which the customer can choose
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The `Burger Menu` will have a certain price, for example 20$ and the rest of the
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products will be listed with a price of 0$.
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In the event that one of the products inside one of the combos is to be more expensive,
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this product will have a specific `combo_price` which will be added to the total price
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"""
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_name = "pos.combo"
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_description = "Product combo choices"
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_order = "sequence, id"
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name = fields.Char(string="Name", required=True)
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combo_line_ids = fields.One2many("pos.combo.line", "combo_id", string="Products in Combo", copy=True)
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num_of_products = fields.Integer("No of Products", compute="_compute_num_of_products")
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sequence = fields.Integer(copy=False)
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base_price = fields.Float(
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compute="_compute_base_price",
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string="Product Price",
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help="The value from which pro-rating of the component price is based. This is to ensure that whatever product the user chooses for a component, it will always be they same price."
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)
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@api.depends("combo_line_ids")
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def _compute_num_of_products(self):
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"""
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the read_group only returns info for the combos that have at least one line.
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This is normally fine, because all the combos will have at least one line.
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The problem is that this function is also run when the user creates a new combo,
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and at that point, the combo doesn't have any lines, so the read_group will return
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nothing and the function will fail to set the value of `num_of_products` to 0, thus
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resulting in an error.
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"""
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for rec in self:
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rec.num_of_products = 0
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# optimization trick to count the number of products in each combo
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for combo, num_of_products in self.env["pos.combo.line"]._read_group([("combo_id", "in", self.ids)], groupby=["combo_id"], aggregates=["__count"]):
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combo.num_of_products = num_of_products
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@api.constrains("combo_line_ids")
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def _check_combo_line_ids_is_not_null(self):
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if any(not rec.combo_line_ids for rec in self):
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raise ValidationError(_("Please add products in combo."))
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@api.depends("combo_line_ids")
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def _compute_base_price(self):
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for rec in self:
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# Use the lowest price of the combo lines as the base price
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rec.base_price = min(rec.combo_line_ids.mapped("product_id.lst_price")) if rec.combo_line_ids else 0
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