fix: deny invalid 'date' in context

book.py

@@ -11,6 +11,7 @@ from trytond.transaction import Transaction
 from trytond.pool import Pool
 from trytond.report import Report
 from decimal import Decimal
+from datetime import date
 from sql.aggregate import Sum
 from sql.conditionals import Case, Coalesce
 from sql.functions import CurrentDate
@@ -274,6 +275,14 @@ class Book(tree(separator='/'), Workflow, ModelSQL, ModelView):
         context = Transaction().context
 
         query_date = context.get('date', IrDate.today())
+
+        # deny invalid date in context
+        if isinstance(query_date, str):
+            try :
+                dt1 = date.fromisoformat(query_date)
+            except :
+                query_date = IrDate.today()
+
         query = tab_book.join(tab_line,
                 condition=tab_book.id==tab_line.cashbook,
             ).select(
@@ -336,14 +345,27 @@ class Book(tree(separator='/'), Workflow, ModelSQL, ModelView):
         Book2 = pool.get('cashbook.book')
         Currency = pool.get('currency.currency')
         Company = pool.get('company.company')
+        IrDate = pool.get('ir.date')
         tab_book = Book2.__table__()
         tab_comp = Company.__table__()
-        (tab_line, tab2) = cls.get_balance_of_cashbook_sql()
         cursor = Transaction().connection.cursor()
+        context = Transaction().context
 
         result = {x:{y.id: Decimal('0.0') for y in cashbooks} for x in names}
 
+        # deny invalid date in context
+        query_date = context.get('date', IrDate.today())
+        if isinstance(query_date, str):
+            try :
+                dt1 = date.fromisoformat(query_date)
+            except :
+                query_date = IrDate.today()
+
         # query balances of cashbooks and sub-cashbooks
+        with Transaction().set_context({
+            'date': query_date,
+            }):
+            (tab_line, tab2) = cls.get_balance_of_cashbook_sql()
             tab_subids = sub_ids_hierarchical('cashbook.book')
             query = tab_book.join(tab_subids,
                     condition=tab_book.id==tab_subids.parent,