Additional debugging shows that state has nothing to do with anything. When I 
edit the answer title of an existing question, I get the same error. It just is 
guaranteed to happen during creation (duh).

--Todd

On Friday, October 31, 2014 4:28:25 PM UTC-7, Todd Berman wrote:
> Very possible.
> 
> 
> 
> 
> Basically, I have this structure:
> 
> 
> 
> 
> Question
> 
>   Answer
> 
>     Editable
> 
> 
> 
> 
> Question gets a cursor that it uses only to get the id of the question to 
> show, and uses a ref-cursor to grab the actual data from a friendly API.
> 
> 
> 
> 
> It then passes a sub cursor to Answer (because a Question may have N 
> answers), which in turn uses editable.
> 
> 
> 
> 
> There is one pattern (creating a new question) where I get an exception 
> thrown because parent is null (which prompted this email, and it turns out 
> has nothing to do with ref-sub-cursor implementing IOmRef, so I apologize for 
> the increasingly misnamed subject).
> 
> 
> 
> 
> Unclear how I get into that state, or what I can do to debug it.
> 
> 
> 
> 
> —Todd
> 
> 
> 
> 
> 
> 
> On Fri, Oct 31, 2014 at 4:23 PM, David Nolen <[email protected]> wrote:
> 
> Sub cursors from an IOmRef instance won't themselves be IOmRefs. For
> 
> the time being we're going to stick to this.
> 
> 
> I'd like to hear a lot more details about the use case before changing
> 
> my mind. It seems to me if you really need sub cursors to be ref
> 
> cursors you are not writing the API that you need for you application
> 
> and piggiebacking on ref cursors in an unintended way.
> 
> 
> David
> 
> 
> On Sat, Nov 1, 2014 at 12:10 AM, Todd Berman <[email protected]> wrote:
> 
> > I am running into an issue where it appears that a ref-sub-cursor 
> > (https://github.com/swannodette/om/blob/master/src/om/core.cljs#L763) 
> > should implement IOmRef, as it appears that -refresh-deps! is being called 
> > against it, which won't work.
> 
> >
> 
> > I am able to make this happen when creating a reference cursor, passing a 
> > sub cursor to a component, and then having that get passed to a third 
> > component (basically, following the editable paradigm from the tutorials).
> 
> >
> 
> > I am still a relative newbie when it comes to the Om internals, so unclear 
> > why this is happening in one case, but not in others.
> 
> >
> 
> > --Todd
> 
> >
> 
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