iphone - Issue with fetching core data objects using NSPredicate -


before start let me give how data model looks like:

enter image description here

i have fetch request following predicate:

nsarray *allowedpacknames = @[@"success, happiness, free"];             self.fetchedresultscontroller = [author mr_fetchallgroupedby:nil                                                            withpredicate:[nspredicate predicatewithformat:@"any quotes.quote.pack.packname in %@", allowedpacknames]                                                                 sortedby:authorkeys.name                                                                ascending:yes                                                                 delegate:self];

i wanted fetch authors has quote packname of success or happiness or free. author has nsset of quotes can see in relationship table below. when execute following error:

coredata: error: (1) i/o error database @ /users/abdul/library/application support/iphone simulator/6.1/applications/da17421b-a54d-42e3-9694-fdcbff7f8ba4/library/application support/mycoolapp/mycoolapp.sqlite.  sqlite error code:1, 'no such column: t2.zquote' 2013-04-05 15:26:47.175 mycoolapp[78622:c07] core data: annotation: -executerequest: encountered exception = i/o error database @ /users/aditya/library/application support/iphone simulator/6.1/applications/da17421b-a54d-42e3-9694-fdcbff7f8ba4/library/application support/mycoolapp/mycoolapp.sqlite.  sqlite error code:1, 'no such column: t2.zquote' userinfo = {     nsfilepath = "/users/abdul/library/application support/iphone simulator/6.1/applications/da17421b-a54d-42e3-9694-fdcbff7f8ba4/library/application support/mycoolapp/mycoolapp.sqlite";     nssqliteerrordomain = 1; }

any idea why?

if see correctly, predicate should be

[nspredicate predicatewithformat:@"any quotes.pack.packname in %@", allowedpacknames]

i.e. have remove "quote", attribute of quote entity, not relationship.


Comments

Post a Comment

Popular posts from this blog

monitor web browser programmatically in Android? -

i've got tricky question here. need users make payment bank (namely barclaycard) in uk. so, have https url , add parameters (such amount pay, order reference, etc) url, start http connection intent.actionview, redirect user browser can enter credit card details on bank's webpage , make payment our account successfully. far ? the code use below (i changed values privacy reasons) problem is, need app when user has completed/failed/cancelled payment. barclaycardautomatically redirects particular url when payment has succeeded, 1 if failed. there no way of knowing when barclaycard payment has succeeded go android app somehow ? button cardbutton = (button) findviewbyid(r.id.card_button); cardbutton.setonclicklistener(new view.onclicklistener() { @override public void onclick(view arg0) { string prehashstring = new string(); string prohashstring = new string(); string shapassphrase = new string(); shapassphrase = "gsvth£h70zkh...
Read more

Shrink a YouTube video to responsive width -

i have youtube video embedded on our website , when shrink screen tablet or phone sizes stops shrinking @ around 560px in width. standard youtube videos or there can add code make go smaller? you can make youtube videos responsive css. wrap iframe in div class of "videowrapper" , apply following styles: .videowrapper { float: none; clear: both; width: 100%; position: relative; padding-bottom: 56.25%; padding-top: 25px; height: 0; } .videowrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } the .videowrapper div should inside responsive element. padding on .videowrapper necessary keep video collapsing. may have tweak numbers depending upon layout.
Read more

wpf - PdfWriter.GetInstance throws System.NullReferenceException -

i'm trying create pdf document using itextsharp 5.3.4 using following document document = new document(); filestream stm = new filestream(filename, filemode.create); pdfwriter writer = pdfwriter.getinstance(document, stm); i'm getting system.nullreferenceexception following stack trace: system.nullreferenceexception occurred hresult=-2147467261 message=la référence d'objet n'est pas définie à une instance d'un objet. source=itextsharp stacktrace: à itextsharp.text.version.getinstance() innerexception: i've verified neither document nor stm null, , if select "continue" in vs12 document created - exception thrown. updated itextsharp 5.4.0 , it's still occurring. can't find information on anywhere - got ideas? make sure not catching exceptions. nullreferenceexception can 1 caught , handled inside itextsharp, don't care it. fact can continue supports theory. change following setting verify: debug -> exceptions ...
Read more