Re: Calculations in a tableview

Thanks to all who helped me on and off the list. After a good night sleep and a day off coding, I think I finally got it :-) > On 28/07/2011, at 23:15 , Quincey Morris wrote: > > So how does the array controller enter this picture at all? It's a glue > object (aka "mediating controller") whose

Re: Calculations in a tableview

On Jul 28, 2011, at 20:00, Andre Masse wrote: > Is this can be done using bindings or should I stop fighting the framework > and and use a datasource? It can be done with bindings***. All you've done is clarified that "totalPrice" isn't a derived property after all. So, you make a regular prope

Re: Calculations in a tableview

Thanks a lot for the clarifications about the role of the NSArrayController. I somehow got confused about the whole binding thing, its not so muddy now. Now, the example I gave was a bad simplification of the real thing as the "totalPrice" is more a "proposedTotalPrice". It's based on a calculat

Re: Calculations in a tableview

Hi, On 29 Jul 11, at 10:51am, cocoa-dev-requ...@lists.apple.com wrote: > For example, lets say I have a tableview with 3 columns: quantity, unit price > and total. I want to calculate total using (quantity * unit price). Pretty > simple using a datasource but I've no idea how to do that with bi

Re: Calculations in a tableview

On Jul 28, 2011, at 15:48, Andre Masse wrote: > For example, lets say I have a tableview with 3 columns: quantity, unit price > and total. I want to calculate total using (quantity * unit price). Pretty > simple using a datasource but I've no idea how to do that with bindings > (using an NSArra

Re: Calculations in a tableview

Try value transformers Thanks Rajendran P On 7/29/11 6:18 AM, "Andre Masse" wrote: Well, I may end up doing this... Thanks Andre Masse On 28/07/2011, at 18:52 , Thomas Davie wrote: > > On 28 Jul 2011, at 23:48, Andre Masse wrote: > >> Hi, >> >> For example, lets say I have a tableview wit

Re: Calculations in a tableview

Well, I may end up doing this… Thanks Andre Masse On 28/07/2011, at 18:52 , Thomas Davie wrote: > > On 28 Jul 2011, at 23:48, Andre Masse wrote: > >> Hi, >> >> For example, lets say I have a tableview with 3 columns: quantity, unit >> price and total. I want to calculate total using (quant

Re: Calculations in a tableview

On 28 Jul 2011, at 23:48, Andre Masse wrote: > Hi, > > For example, lets say I have a tableview with 3 columns: quantity, unit price > and total. I want to calculate total using (quantity * unit price). Pretty > simple using a datasource but I've no idea how to do that with bindings > (using