The Kind (db.Model) together with the key_id or key_name is the "address" of the object to read or write. Also the name space and app_id are part of this address (the db.Key) The SQL equivalent is table_name-row_id.
2011/3/5 Ram Rachum <ram.rac...@gmail.com>: > Hello, > I'm very confused about the whole key and key-name thing in GAE. > What's the job of the key-name? Is this documented anywhere? I couldn't find > it in the docs. > For example, when I use `Model.get_or_insert`, why do I need to provide a > `key_name`? I want to get an entity that matches the keywords I supply, or > create one if one doesn't exist. Why do I need to put in a key name? What > does it do? Is it stored on the object somehow? What will happen if I put in > "bla bla bla"? > > Frustratedly yours, > Ram. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appengine@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
