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PORestKit object mapping request that has nested JSON in its HTTP body
 

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  1. PORestKit object mapping request that has nested JSON in its HTTP body
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    <p>I am making a POST request with a nested JSON in its HTTP body and I am not getting the appropriate response. I am passing a custom object called RequestObject with properties:</p> <pre><code>@interface RequestObject : NSObject @property (nonatomic, copy) NSString *title; @property (nonatomic, strong) NSDictionary *location; @property (nonatomic, strong) NSMutableArray *pictures; </code></pre> <p>I want to map my object such that in its HTTP Body, the JSON would look like this:</p> <pre><code>{ "title": "Magic School Bus", "location": { "latitude": "38.764792", "longitude": "-121.247574" }, "pictures": [ { "base64pic": "iVBORw0KGg..." } ] } </code></pre> <p>For the request object, I configured it like so:</p> <pre><code>RequestObject *request = [[RequestObject alloc] init]; // Title property request.title = @"MyTitle"; // Location property request.location = @{ @"latitude" : [NSNumber numberWithDouble:38.757965], @"longitude" : [NSNumber numberWithDouble:-121.254044] }; // Pictures property request.pictures = [[NSMutableArray alloc] init]; // I add a dictionary into the pictures array NSDictionary *picture = @{@"base64pic" : @"somebase64string"}; [request.pictures addObject:picture]; </code></pre> <p>I believe I may be setting my request.pictures incorrectly and that is why my response comes back wrong. This is the rest of my code for calling the POST request:</p> <pre><code>RKObjectMapping *requestMapping = [RKObjectMapping requestMapping]; [mapping addAttributeMappingsFromArray:@[@"title", @"location", @"pictures"]]; [manager addRequestDescriptor:[RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[RequestObject class] rootKeyPath:nil method:RKRequestMethodPOST]]; RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[NSDictionary class]]; [mapping addAttributeMappingsFromArray:@[@"response"]]; [manager addResponseDescriptor:[RKResponseDescriptor responseDescriptorWithMapping:responseMapping method:RKRequestMethodPOST pathPattern:nil keyPath:nil statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]; // Post [manager postObject:request path:@"books/" parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *result){ // Response back }failure:^(RKObjectRequestOperation *operation, NSError *error) { </code></pre> <p>When I make the POST call in my project, I see this as the HTTP Request body in my console:</p> <pre><code>Request Body : location[latitude]=38.757965&amp;location[longitude]=-121.254044&amp;pictures[][base64pic]=somebase64string&amp;title=MyTitle </code></pre>
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    1. COWhy don't you just create an NSMutableURLRequest and setHTTPBody with your request data and create the RKObjectRequestOperation with that request. It can make things easier and straight forward.
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    2. COI'd like to use RestKit's mapping capabilities and learn how to solve this so I can apply this on my other requests.
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    3. CO@Ad-J I followed your advice and was able to successfully call the request. I ended up doing it “manually” via NSMutableURLRequest and I set the HTTP body with a NSDictionary. I’d like to be able to still use a custom object to set my values and then transform the object into NSData so I can pass it to the request’s HTTP body. Is there a way to take an object, map it with RestKit and then return a NSData object from the mapping?
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