account_cash_deposit: add support for loose coins in deposits

Adds a new field for loose coin amount for deposits: this field is useful if your bank has a coin counting machine that allows you to deposit coins without putting them in rolls.

account_cash_deposit/models/account_cash_deposit.py

@@ -98,6 +98,16 @@ class AccountCashDeposit(models.Model):
         states={"draft": [("readonly", "=", False)]},
         tracking=True,
     )
+    coin_amount = fields.Monetary(
+        string="Loose Coin Amount",
+        currency_field="currency_id",
+        readonly=True,
+        states={"draft": [("readonly", "=", False)]},
+        tracking=True,
+        help="If your bank has a coin counting machine, enter the total amount "
+        "of coins counted by the machine instead of creating a line for each type "
+        "of coin.",
+    )
     total_amount = fields.Monetary(
         compute="_compute_total_amount",
         string="Total Amount",
@@ -115,7 +125,12 @@ class AccountCashDeposit(models.Model):
             "name_company_unique",
             "unique(company_id, name)",
             "A cash deposit/order with this reference already exists in this company.",
-        )
+        ),
+        (
+            "coin_amount_positive",
+            "CHECK(coin_amount >= 0)",
+            "The loose coin amount must be positive or null.",
+        ),
     ]
 
     @api.constrains("cash_journal_id", "currency_id")
@@ -189,7 +204,7 @@ class AccountCashDeposit(models.Model):
         )
         mapped_data = {x["parent_id"][0]: x["subtotal"] for x in rg_res}
         for rec in self:
-            rec.total_amount = mapped_data.get(rec.id, 0)
+            rec.total_amount = mapped_data.get(rec.id, 0) + rec.coin_amount
 
     @api.depends("move_id.line_ids.reconciled", "company_id")
     def _compute_is_reconcile(self):

account_cash_deposit/tests/test_cash_deposit.py

@@ -93,6 +93,7 @@ class TestAccountCashDeposit(TransactionCase):
         self.assertEqual(order.move_id.ref, order.display_name)
 
     def test_cash_deposit(self):
+        coin_amount = 12.42
         deposit = (
             self.env["account.cash.deposit"]
             .with_context(default_operation_type="deposit")
@@ -102,6 +103,7 @@ class TestAccountCashDeposit(TransactionCase):
                     "currency_id": self.currency.id,
                     "cash_journal_id": self.cash_journal.id,
                     "bank_journal_id": self.bank_journal.id,
+                    "coin_amount": coin_amount,
                     "line_ids": [
                         (0, 0, {"cash_unit_id": self.cash_unit_note.id, "qty": 3}),
                         (0, 0, {"cash_unit_id": self.cash_unit_coinroll.id, "qty": 6}),
@@ -116,7 +118,7 @@ class TestAccountCashDeposit(TransactionCase):
         total = (
             3 * self.cash_unit_note.total_value
             + 6 * self.cash_unit_coinroll.total_value
-        )
+        ) + coin_amount
         self.assertFalse(
             deposit.currency_id.compare_amounts(deposit.total_amount, total)
         )

account_cash_deposit/views/account_cash_deposit.xml

@@ -68,6 +68,10 @@
                             />
                             <field name="cash_journal_id" />
                             <field name="bank_journal_id" />
+                            <field
+                                name="coin_amount"
+                                attrs="{'invisible': [('operation_type', '!=', 'deposit')]}"
+                            />
                         </group>
                         <group name="right">
                             <field name="total_amount" />