[IMP] hr_expense: rename responsible_id to user_id

As user_id is a magical field, we rename responsible_id to user_id to notify him when he is assigned to an expense sheet.
The other option is to rewrite the mail template "message_user_assigned" and to adapt mail_thread.py to accept other field than user_id, but this task is let for later.

addons/hr_expense/models/hr_expense.py

@@ -475,7 +475,7 @@ class HrExpenseSheet(models.Model):
     employee_id = fields.Many2one('hr.employee', string="Employee", required=True, readonly=True, states={'submit': [('readonly', False)]}, default=lambda self: self.env['hr.employee'].search([('user_id', '=', self.env.uid)], limit=1))
     address_id = fields.Many2one('res.partner', string="Employee Home Address")
     payment_mode = fields.Selection([("own_account", "Employee (to reimburse)"), ("company_account", "Company")], related='expense_line_ids.payment_mode', default='own_account', readonly=True, string="Paid By")
-    responsible_id = fields.Many2one('res.users', 'Manager', readonly=True, copy=False, states={'submit': [('readonly', False)]}, track_visibility='onchange')
+    user_id = fields.Many2one('res.users', 'Manager', readonly=True, copy=False, states={'submit': [('readonly', False)]}, track_visibility='onchange', oldname='responsible_id')
     total_amount = fields.Monetary('Total Amount', currency_field='currency_id', compute='_compute_amount', store=True, digits=dp.get_precision('Account'))
     company_id = fields.Many2one('res.company', string='Company', readonly=True, states={'submit': [('readonly', False)]}, default=lambda self: self.env.user.company_id)
     currency_id = fields.Many2one('res.currency', string='Currency', readonly=True, states={'submit': [('readonly', False)]}, default=lambda self: self.env.user.company_id.currency_id)
@@ -506,7 +506,7 @@ class HrExpenseSheet(models.Model):
     def _onchange_employee_id(self):
         self.address_id = self.employee_id.address_home_id
         self.department_id = self.employee_id.department_id
-        self.responsible_id = self.employee_id.expense_manager_id
+        self.user_id = self.employee_id.expense_manager_id
 
     @api.multi
     @api.constrains('expense_line_ids')
@@ -558,7 +558,7 @@ class HrExpenseSheet(models.Model):
             return 'hr_expense.mt_expense_refused'
         elif 'state' in init_values and self.state == 'done':
             return 'hr_expense.mt_expense_paid'
-        elif 'responsible_id' in init_values:
+        elif 'user_id' in init_values:
             return 'hr_expense.mt_expense_responsible'
         return super(HrExpenseSheet, self)._track_subtype(init_values)
 
@@ -591,8 +591,8 @@ class HrExpenseSheet(models.Model):
         for partner in users.mapped('partner_id'):
             values['message_follower_ids'] += MailFollowers._add_follower_command(self._name, [], {partner.id: None}, {})[0]
         
-        if values.get('responsible_id') and values.get('responsible_id') != values.get('employee_id'):
-            resp_partner = self.env['res.users'].browse(values['responsible_id'])
+        if values.get('user_id') and values.get('user_id') != employee.user_id.id:
+            resp_partner = self.env['res.users'].browse(values['user_id'])
             values['message_follower_ids'] += MailFollowers._add_follower_command(self._name, [], {resp_partner.partner_id.id: None}, {})[0]
 
     # --------------------------------------------
@@ -644,8 +644,8 @@ class HrExpenseSheet(models.Model):
     def approve_expense_sheets(self):
         if not self.user_has_groups('hr_expense.group_hr_expense_user'):
             raise UserError(_("Only HR Officers can approve expenses"))
-        responsible = self.responsible_id.id or self.env.user.id
-        self.write({'state': 'approve', 'responsible_id': responsible})
+        responsible_id = self.user_id.id or self.env.user.id
+        self.write({'state': 'approve', 'user_id': responsible_id})
 
     @api.multi
     def paid_expense_sheets(self):

addons/hr_expense/report/hr_expense_report.xml

@@ -22,7 +22,7 @@
                             </div>
                             <div class="col-xs-2">
                                 <strong>Validated By:</strong>
-                                <p t-field="o.responsible_id"/>
+                                <p t-field="o.user_id"/>
                             </div>
                             <div class="col-xs-3">
                                 <strong>Payment By:</strong>

addons/hr_expense/views/hr_expense_views.xml

@@ -429,7 +429,7 @@
                         <group>
                             <field name="employee_id"/>
                             <field name="payment_mode"/>
-                            <field name="responsible_id"/>
+                            <field name="user_id"/>
                             <field name="address_id" invisible="1"/>
                             <field name="department_id" invisible="1"/>
                             <field name="company_id" groups="base.group_multi_company"/>