Use write mode by default to check create and delete of resources

It is less astonishing for the user and it allows to customize easily the
check to perform per model.

issue7717
review54371002

CHANGELOG

@@ -1,3 +1,5 @@
+* Use write mode by default to check create and delete of resources
+
 Version 5.0.0 - 2018-10-01
 * Bug fixes (see mercurial logs for details)
 * Allow non translatable reports

trytond/ir/resource.py

@@ -69,7 +69,14 @@ class ResourceMixin(ModelSQL, ModelView):
                 if record.resource:
                     model_names.add(str(record.resource).split(',')[0])
         for model_name in model_names:
-            ModelAccess.check(model_name, mode=mode)
+            checks = cls._convert_check_access(model_name, mode)
+            for model, check_mode in checks:
+                ModelAccess.check(model, mode=check_mode)
+
+    @classmethod
+    def _convert_check_access(cls, model, mode):
+        return [
+            (model, {'create': 'write', 'delete': 'write'}.get(mode, mode))]
 
     @classmethod
     def read(cls, ids, fields_names=None):