[Nitro] transactions and to_s
tim at keow.org
Mon Sep 26 11:41:54 EDT 2005
On Sat, Sep 24, 2005 at 09:49:14AM +0300, George Moschovitis wrote:
> > * If you attempt to reference a belongs_to relation
> > for the first time when you are inside a to_s method,
> > it returns nil instead of loading the object.
> I don't quite understand this. What is so special in the to_s method?
> Can you explain a little better?
Digging deeper, it seems to be a misunderstanding on my part
of how Og knows when to reload related objects. Looking
through the test cases that come with Og it is becoming
somewhat clearer, but I am still not sure I understand
completely, especially when it comes to eager reloading.
Is there a chance you could do a little informal writeup
to the list on this topic, mentioning when reloading
is done eagerly and when it has to be manually triggered
and list the various syntaxes for triggering a reload?
What I understand so far is that:
1) self.some_related_obj appears to cause an eager reload,
while @some_related_obj appears to require a manual
reload, triggered by either self.some_related_obj(true)
or self.some_related_obj(:reload => true)
2) setting some_related_obj = some_obj really only sets
some_related_obj_oid, not the object reference itself,
unless the object you are setting it on happens to be
brand new and not saved yet (so you better have already
saved some_obj before this assignment so that it has a
valid oid to pass along)
P.S. Your email has reply-to set to both your email and the
list. Should I usually just trim it to only the list?
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