action generate student id

student_management/models/student_student.py

@@ -1,16 +1,30 @@
-from odoo import fields, models
+from odoo import fields, models, api
 
 class StudentStudent(models.Model):
     _name = 'student.student'
     _description = 'Student Management'
 
     name = fields.Char(string='Tên học sinh', required=True)
-    student_id = fields.Char(string='Mã học sinh', unique=True)
+    student_id = fields.Char(string='Mã học sinh', unique=True, copy=False, required=True, default=lambda self: self._generate_student_id())
     birth_date = fields.Date(string='Ngày sinh')
     gender = fields.Selection([
         ('male', 'Nam giới'),
         ('female', 'Nữ giới')
-    ])
+    ], default='male')
     email = fields.Char(string='Email', required=True, unique=True)
     phone = fields.Char(string='Số điện thoại')
     course_ids = fields.Many2many('student.course', string='Môn học')
+
+    @api.model
+    def _generate_student_id(self):
+        last_student = self.search([], order='id desc', limit=1)
+        new_id = int(last_student.student_id.split('-')[-1]) + 1 if last_student and last_student.student_id else 1
+        return f'STU-{fields.Date.today().year}-{new_id:04d}'
+
+    def generate_student_id(self):
+        for record in self:
+            record.student_id = self._generate_student_id()
+
+    def action_generate_student_id(self):
+        for record in self:
+            record.write({'student_id': self._generate_student_id()})