Hi,

install module share, in each form, you will have two green buttons added on the top left of the title of the form (the first to give possibility to share the link with rights read or write, the second send an email with the link inside, this give the possibility to a people without openerp account to see/edit on the link you give), try the button and choose config you want (see/edit) and click on button share, in the wizard, you will have url displayed in a field, and in the body a script to share the link.

See in the code of module share and you will have the function which find the url ;) .

Hoping this will help and work.

Bye