added salary table

app/models/repayment.py

@@ -161,6 +161,14 @@ class Repayment(db.Model):
         return cls.query.filter(
             cls.repay_date.is_(None)
         ).order_by(cls.created_at.desc()).first()
+    @classmethod
+    def get_latest_repayment_with_loanId(cls, loan_id):
+        """
+        Get the latest repayment with loan Id.
+        """
+        return cls.query.filter(
+            cls.loan_id == loan_id
+        ).order_by(cls.created_at.desc()).first()
 
     @classmethod
     def get_latest_loan_with_repay_date(cls):