jon@totient.demon.co.uk writes:

any chance you could be more explicit. You read the ZClass chapter in the Zope book?

This has confused me enough already

it's "Use Database Methods" permission?

do you add this on the Product Folder, the Zclass thing or the instance? or on the zsqlmethod. The ZClass allows you to remap the permissions protecting the ZClass' methods.

Say, such a method is protected by "Use database methods". But the ZClass uses the method to update a shopping card and wants the permission to be "Update shopping card". It can use a permission mapping to rebind the "Use database methods" as necessary. The context of the ZInstance can then associate roles with the mapping target as required.

should it be set to 'view' or 'use database methods'? Whatever is more appropriate for the use of your Z SQL method....

E.g. when the SQL is just a search (no modification) quite restrictive (can read only non-sensible information), then "View" may be sufficient. If, however, it can modify data, "Use database methods" would be more appropriate.

does the open database connections come into use at all? Only, when you want to test your Z SQL methods inside the ZClass.

this is driving me crazy. it should be so simple. It is not too difficult.

Look at the chapter on ZClasses in the Zope Book. When I last read it, it was quite understandable.

(I've never liked the zope permission thing... and the language is terrible 'permission that requires this permission') Seems to be a documentation bug:

means "operation requires a permission..." or "permission is mapped to permission..." Dieter