fix obj.contract

contracts/admin.py

@@ -157,7 +157,10 @@ class ContracteeSignatureRepresentativeInline(
     formset = SingnatureRepresentativeFormSet
 
     def get_parent_object_is_editable(self, obj):
+        if hasattr(obj, "contract"):
             return obj.contract.is_editable_without_approve_permission
+        else:
+            return obj.is_editable_without_approve_permission
 
     def get_formset(self, request, obj=None, **kwargs):
         formset = super().get_formset(request, obj, **kwargs)
@@ -177,7 +180,10 @@ class SigneeSignatureRepresentativeInline(
     ParentContractInlineMixin, NestedStackedInline
 ):
     def get_parent_object_is_editable(self, obj):
+        if hasattr(obj, "contract"):
             return obj.contract.is_editable_without_approve_permission
+        else:
+            return obj.is_editable_without_approve_permission
 
     model = SigneeSignatureRepresentative
     extra = 0