[IMP] expense: default expense category on scan

Description of the issue/feature this PR addresses:
- Expenses are automatically created when uploading or scanning receipts. This is a feature often used by employees who have a lot of tickets and upload them in batch. The expenses created have a random category (product_id) specified. Companies may however want to specify the default category for accounting or management purposes. They are currently unable to do so.

Current behavior before PR:
- Companies can't specify default category for scanned/uploaded expenses

Desired behavior after PR is merged:
- In the Expenses setting, combine the "Default Journals" and "Payment" block into one and name the new block "Accounting"
- Add new setting in Expenses for specifying default category for scanned/uploaded expenses
- If that setting is set, use the value inside it for the category field of new scanned/uploaded expenses

closes odoo/odoo#124205

Task-id: 3354763
Signed-off-by: Quentin De Paoli <qdp@odoo.com>

addons/hr_expense/models/hr_expense.py

@@ -389,7 +389,7 @@ class HrExpense(models.Model):
             vals = {
                 'name': attachment_name,
                 'unit_amount': 0,
-                'product_id': product.id,
+                'product_id': self.env.company.expense_product_id.id or product.id,
             }
             if product.property_account_expense_id:
                 vals['account_id'] = product.property_account_expense_id.id

addons/hr_expense/models/res_company.py

@@ -6,6 +6,12 @@ from odoo import fields, models
 class ResCompany(models.Model):
     _inherit = "res.company"
 
+    expense_product_id = fields.Many2one(
+        "product.product",
+        string="Default Expense Category",
+        check_company=True,
+        domain="[('can_be_expensed', '=', True), '|', ('company_id', '=', False), ('company_id', '=', company_id)]",
+    )
     expense_journal_id = fields.Many2one(
         "account.journal",
         string="Default Expense Journal",

addons/hr_expense/models/res_config_settings.py

@@ -15,6 +15,7 @@ class ResConfigSettings(models.TransientModel):
                                              config_parameter='hr_expense.use_mailgateway')
     module_hr_payroll_expense = fields.Boolean(string='Reimburse Expenses in Payslip')
     module_hr_expense_extract = fields.Boolean(string='Send bills to OCR to generate expenses')
+    expense_product_id = fields.Many2one('product.product', related='company_id.expense_product_id', readonly=False)
     expense_journal_id = fields.Many2one('account.journal', related='company_id.expense_journal_id', readonly=False)
     company_expense_allowed_payment_method_line_ids = fields.Many2many(
         comodel_name='account.payment.method.line',

addons/hr_expense/views/res_config_settings_views.xml

@@ -32,13 +32,14 @@
                             <setting id="expense_extract_settings" string="Expense Digitalization (OCR)" company_dependent="1" help="Digitalize your receipts with OCR and Artificial Intelligence" title="use OCR to fill data from a picture of the bill">
                                 <field name="module_hr_expense_extract" widget="upgrade_boolean"/>
                             </setting>
+                            <setting company_dependent="1" string="Default Category" help="Default expense categories for uploaded expenses" title="Enable users to choose default category for automatically generated expenses.">
+                                <field name="expense_product_id"/>
+                            </setting>
                         </block>
-                        <block title="Default Journals">
+                        <block title="Accounting">
                             <setting company_dependent="1" help="Default accounting journal for expenses paid by employees." string="Employee Expense Journal">
                                 <field name="expense_journal_id"/>
                             </setting>
-                        </block>
-                        <block title="Payment">
                             <setting company_dependent="1" string="Company payment methods available" help="Payment method allowed for expenses paid by company.">
                                 <field name="company_expense_allowed_payment_method_line_ids" widget="many2many_tags" placeholder="All payment methods allowed" options="{'no_create': True}" context="{'show_payment_journal_id': 1}"/>
                             </setting>