Fwd: Problem in save and open on Core Data Document Based application
Fwd: Problem in save and open on Core Data Document Based application
- Subject: Fwd: Problem in save and open on Core Data Document Based application
- From: haresh vavdiya <email@hidden>
- Date: Wed, 11 Mar 2009 09:20:55 +0530
---------- Forwarded message ----------
From: haresh vavdiya <email@hidden>
Date: Tue, Mar 10, 2009 at 4:50 PM
Subject: Re: Problem in save and open on Core Data Document Based
application
To: Volker in Lists <email@hidden>
Hi Volker,
Thanks Volker,
Ya u r right, i opened from File -> Open and it works,,...please
tell me that what should i do....when i directly click on application.....
Can we use MySql for storing data instead of Core Data.
Thanks,
Haresh.
On Tue, Mar 10, 2009 at 4:23 PM, Volker in Lists <email@hidden>wrote:
> Hi,
>
> the message says that the data model in the file you try to open is
> different than the one you have in your app. As far as I can follow you,
> both apps use the same file type and the former is always trying to open the
> others file. Of ocurse, then it complains about the different model. Have
> you tried opening Departments file via Departments -> File -> Open ? That
> should work. If not, you have made changes to your model after saving the
> document.
>
> On a side note: CoreData should not be learned by the beginner. First, try
> to understand the basics, than move slowly, very slowly up to CoreData,
> otherwise you'll be lost soon. If you're not content with the content you
> find via Apple's developer resources on Core Data, there is a very good book
> written by Markus Zarra - available as preliminary version from Pragmatic
> Programmers.
>
> Cheers,
> Volker
>
>
> Am 10.03.2009 um 11:39 schrieb haresh vavdiya:
>
> Hello,
>>
>> I am learning mac development from Aaron Hillegas 3rd Edition.
>> i have created two Example "CarLot" and "Departments" based on Core -Data
>> document based application.
>>
>> When i created CarLot example that time it can save and open
>> data without writing single line. Then i created Departments example so it
>> should also save and open.
>>
>> But second example save successfully but when open, it gives
>> error. But in dock panel, CarLot apps is launched. i can open this apps
>> from
>> dock. But i wanted to save and open Departments example.
>>
>> I can't understand that i saved apps from Deparetment and it
>> launch CarLot example in dock. Is there in problem....what is the
>> problem......i m trying from long time.
>>
>> And the message is "The document “DeptTest” could not be
>> opened. The model configuration used to open the store is incompatible
>> with
>> the one that was used to create the store."
>>
>> Please anyone help to figure out this problem.
>>
>> Thanks,
>> Haresh.
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