I am trying to load iTunes Search results into custom objects using RestKit. I defined a simple subclass of NSObject for the results:
@interface LSiTunesResult : NSObject @property (nonatomic) NSInteger itemID; @property (nonatomic) NSInteger artistID; @property (strong, nonatomic) NSString *title; @property (strong, nonatomic) NSString *artistName; @property (strong, nonatomic) NSString *collectionName; @property (strong, nonatomic) NSString *itemDescription; @property (strong, nonatomic) NSURL *imageURL; @property (strong, nonatomic) NSURL *thumbnailURL; @property (strong, nonatomic) NSURL *trackPreviewURL; @property (strong, nonatomic) NSURL *trackViewURL; // + (RKObjectMapping *)objectMapping; @end
For simplicity, I defined object mapping
RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[LSiTunesResult class]]; [mapping addAttributeMappingsFromDictionary:@{ @"artistName" : @"artistName" }];
I tried several different ways to query for results using both the custom RKObjectManager and RKObjectRequestOperation. My simple example with RKObjectRequestOperation looks like this:
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:[LSiTunesResult objectMapping] pathPattern:nil keyPath:@"results" statusCodes:nil]; RKObjectRequestOperation *operation = [[RKObjectRequestOperation alloc] initWithRequest:urlRequest responseDescriptors:@[responseDescriptor]]; [operation.HTTPRequestOperation setAcceptableContentTypes:[NSSet setWithObject:@"text/javascript"]]; [operation setCompletionBlockWithSuccess:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) { NSLog(@"The search results are: %@", [mappingResult array]); } failure:^(RKObjectRequestOperation *operation, NSError *error) { NSLog(@"Failure reason: %@", [error localizedDescription]); }]; [operation start];
Unfortunately, I get the following error from RKResponseMapperOperation: "restkit.network:RKResponseMapperOperation.m:197 Unable to parse response data: Unprocessed response was downloaded (200) with content type" text / javascript ""
I have RestKit online log enabled, and it seems like the response from the iTunes API marks the content type as “text / javascript” and the body contains valid JSON. I tried to tell RKObjectRequestOperation that text / javascript is an acceptable type of content.
Does anyone have experience with the iTunes API and RestKit? I am curious if this is a simple display issue at my end, or if the iTunes API approving the content type is javascript as long as it seems valid. JSON discards RestKit. The following is a sample iTunes Search API response that logs during my example.
2012-10-21 01:48:54.061 Listen[99898:617] T restkit.network:RKHTTPRequestOperation.m:124 GET 'http://itunes.apple.com/search?term=The%20Lumineers&country=US&media=music&limit=1' (200): response.headers={ "Cache-Control" = "no-transform, max-age=60"; Connection = "keep-alive"; "Content-Encoding" = gzip; "Content-Length" = 519; "Content-Type" = "text/javascript; charset=utf-8"; Date = "Sun, 21 Oct 2012 05:48:54 GMT"; Vary = "Accept-Encoding"; "X-Apple-Partner" = "origin.0"; "apple-timing-app" = "49 ms"; "x-apple-application-instance" = 1018018; "x-apple-application-site" = NWK; "x-apple-orig-url-path" = "/search?term=The%20Lumineers&country=US&media=music&limit=1"; "x-apple-translated-wo-url" = "/WebObjects/MZStoreServices.woa/ws/wsSearch?term=The%20Lumineers&country=US&media=music&limit=1"; "x-webobjects-loadaverage" = 0; } response.body= { "resultCount":1, "results": [ {"wrapperType":"track", "kind":"music-video", "artistId":350720227, "trackId":516035614, "artistName":"The Lumineers", "trackName":"Ho Hey", "trackCensoredName":"Ho Hey", "artistViewUrl":"https://itunes.apple.com/us/artist/the-lumineers/id350720227?uo=4", "trackViewUrl":"https://itunes.apple.com/us/music-video/ho-hey/id516035614?uo=4", "previewUrl":"http://a404.v.phobos.apple.com/us/r30/Video/fd/81/e1/mzi.gxodlwda..640x256.h264lc.upm4v", "artworkUrl30":"http://a1838.phobos.apple.com/us/r30/Video/v4/41/64/37/416437c2-c02e-4706-3f13-a47f50ec2ccc/Cover.40x30-75.jpg", "artworkUrl60":"http://a621.phobos.apple.com/us/r30/Video/v4/41/64/37/416437c2-c02e-4706-3f13-a47f50ec2ccc/Cover.80x60-75.jpg", "artworkUrl100":"http://a1629.phobos.apple.com/us/r30/Video/v4/41/64/37/416437c2-c02e-4706-3f13-a47f50ec2ccc/Cover.100x100-75.jpg", "collectionPrice":1.99, "trackPrice":1.99, "releaseDate":"2012-04-03T07:00:00Z", "collectionExplicitness":"notExplicit", "trackExplicitness":"notExplicit", "trackTimeMillis":160952.0, "country":"USA", "currency":"USD", "primaryGenreName":"Singer/Songwriter"}] }