Re: Array of Dictionaries as .userInfo
Re: Array of Dictionaries as .userInfo
- Subject: Re: Array of Dictionaries as .userInfo
- From: "Eric E. Dolecki" <email@hidden>
- Date: Tue, 26 Jan 2016 15:43:23 +0000
I agree with you there in terms of passing the data in the notification.
I've requested that the developer in charge of some of the appDelegate
backend allow for the explicit data request. It's an extra call or two, but
keeps the pipeline known and clean.
On Tue, Jan 26, 2016 at 10:37 AM Clark Cox <email@hidden> wrote:
> The notification’s userInfo *must* be a dictionary, trying to force it to
> be something else is just asking for trouble. You could create a dictionary
> that contains your array of dictionaries if you want to be able to pass it
> through an NSNotification.
>
> That said, IMHO, this use of notifications has a little bit of code smell.
> Ideally, I would expect a notification to tell the control to
> reload/refresh/relayout itself by asking an appropriate delegate or
> controller for the data it needs (rather than getting the data out of the
> notification itself). It helps to have a strictly defined path that your
> data can follow; if it’s in an NSNotification, it could potentially have
> come from *anywhere*
>
> --
> Clark Smith Cox III
> email@hidden
>
> > On Jan 26, 2016, at 07:12, Eric E. Dolecki <email@hidden> wrote:
> >
> > I have a control which takes an array of dictionaries to construct it's
> UI
> > (as a distinct method).
> >
> > Now I'd like to add a notification to supply the data as well. I'd like
> to
> > pass the data as userInfo.
> >
> > When constructing the observer method, how do I constuct?
> >
> > func weHaveData(notification:NSNoticiation){
> > let dict = notification.userInfo as Array<Dictionary<String,String>>
> > control.loadData(dict)
> > }
> >
> > *Can't convert value of type [NSObject:AnyObject]? to
> > Array<Dictionary<String,String>> in coercion*
> >
> > I've tried without the cast. Is there an easy work around?
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