add cancel transaction

addons/saat_invest/models/transaksi.py

@@ -30,6 +30,11 @@ class SaatTransaksi(models.Model):
         # IDR
         return self.env.ref('base.IDR', raise_if_not_found=False) or self.env.company.currency_id
 
+    state = fields.Selection([
+        ('done', 'Selesai'),
+        ('cancel', 'Dibatalkan'),
+    ], string="Status", default='done', required=True, copy=False)
+
     @api.depends('tanggal', 'tipe', 'saham_id')
     def _compute_name(self):
         for r in self:
@@ -50,6 +55,14 @@ class SaatTransaksi(models.Model):
             if r.harga < 0:
                 raise models.ValidationError("Harga tidak boleh negatif.")
 
+    def action_cancel(self):
+        self.write({'state': 'cancel'})
+        return True
+
+    def action_set_to_done(self):
+        self.write({'state': 'done'})
+        return True
+
     # --- auto-sync portofolio: setiap transaksi berubah, portofolio diperbarui ---
     def _resync_portofolio(self):
         """Rekalkulasi portofolio dari seluruh transaksi (idempoten)."""