block change account to kind view if account have been move

account.py

@@ -159,6 +159,7 @@ class Account(metaclass=PoolMeta):
         super(Account, cls).__setup__()
         cls._error_messages.update({
             'bad_operation': ('Operación No permitida.'),
+            'dont_write_account': ('Dont write account  "%(account)s" to kind view because have moves.'),
         })
 
     @classmethod
@@ -166,6 +167,22 @@ class Account(metaclass=PoolMeta):
         cls.raise_user_error('bad_operation')
         return super(Account, cls).copy(records, default=default)
 
+    @classmethod
+    def validate(cls, accounts):
+        super(Account, cls).validate(accounts)
+        cls.check_account_to_write(accounts)
+
+    @classmethod
+    def check_account_to_write(cls, accounts):
+        pool = Pool()
+        Line = pool.get('account.move.line')
+        for account in accounts:
+            lines = Line.search([('account', '=', account.id)])
+            if account.kind == 'view' and lines:
+                cls.raise_user_error('dont_write_account', {
+                        'account': account.rec_name,
+                        })
+
 
 class AuxiliaryBookStart(ModelView):
     'Auxiliary Book Start'