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iosrestkitcontent-typetastypie

Reskit POST operation not working proper (error 1016)

I'm trying to bind RestKit with a REST API created by Django-Tastypie. GET operations work well but POST operations have weird behaviors : a row is created on database but all fields are empty.

I have RestKit on version 0.20.3-dev

Here's my code (directly copied from here) :

RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[User class]];
[responseMapping addAttributeMappingsFromArray:@[@"pseudo", @"email", @"password"]];
NSIndexSet *statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful); // Anything in 2xx
RKResponseDescriptor *userDescriptor2 = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping pathPattern:@"/user" keyPath:@"objects" statusCodes:statusCodes];

RKObjectMapping *requestMapping = [RKObjectMapping requestMapping]; // objectClass == NSMutableDictionary
[requestMapping addAttributeMappingsFromArray:@[@"pseudo", @"email", @"password"]];

RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[User class] rootKeyPath:@"objects"];

RKObjectManager *manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:@"http://127.0.0.1:8000"]];
[manager addRequestDescriptor:requestDescriptor];
[manager addResponseDescriptor:userDescriptor2];

// Tastypie error without this line
manager.requestSerializationMIMEType = RKMIMETypeJSON;

// This line changes nothing
[manager setAcceptHeaderWithMIMEType:RKMIMETypeJSON];

User *user = [User new];
user.pseudo = @"test";
user.email = @"test@gmail.com";
user.password = @"test";

[manager postObject:user path:@"/api/v1/user/" parameters:nil success:nil failure:nil];

And this are errors i get :

2013-06-29 02:18:21.882 test_restkit[40395:c07] I restkit:RKLog.m:34 RestKit logging initialized... 2013-06-29 02:18:21.930 test_restkit[40395:c07] I restkit.network:RKObjectRequestOperation.m:180 GET 'http://127.0.0.1:8000/api/v1/post/' 2013-06-29 02:18:21.930 test_restkit[40395:c07] I restkit.network:RKObjectRequestOperation.m:180 POST 'http://127.0.0.1:8000/api/v1/user/' 2013-06-29 02:18:21.965 test_restkit[40395:4c03] E restkit.network:RKObjectRequestOperation.m:576 Object request failed: Underlying HTTP request operation failed with error: Error Domain=org.restkit.RestKit.ErrorDomain Code=-1016 "Expected content type {(
    "application/x-www-form-urlencoded",
    "application/json" )}, got text/html" UserInfo=0xa8437b0 {AFNetworkingOperationFailingURLRequestErrorKey=<NSMutableURLRequest http://127.0.0.1:8000/api/v1/user/>, NSErrorFailingURLKey=http://127.0.0.1:8000/api/v1/user/, NSLocalizedDescription=Expected content type {(
    "application/x-www-form-urlencoded",
    "application/json" )}, got text/html, AFNetworkingOperationFailingURLResponseErrorKey=<NSHTTPURLResponse: 0x95866b0>} 2013-06-29 02:18:21.966 test_restkit[40395:4c03] E restkit.network:RKObjectRequestOperation.m:243 POST 'http://127.0.0.1:8000/api/v1/user/' (201 Created / 0 objects) [request=0.0304s mapping=0.0000s total=0.0402s]: Error Domain=org.restkit.RestKit.ErrorDomain Code=-1016 "Expected content type {(
    "application/x-www-form-urlencoded",
    "application/json" )}, got text/html" UserInfo=0xa8437b0 {AFNetworkingOperationFailingURLRequestErrorKey=<NSMutableURLRequest http://127.0.0.1:8000/api/v1/user/>, NSErrorFailingURLKey=http://127.0.0.1:8000/api/v1/user/, NSLocalizedDescription=Expected content type {(
    "application/x-www-form-urlencoded",
    "application/json" )}, got text/html, AFNetworkingOperationFailingURLResponseErrorKey=<NSHTTPURLResponse: 0x95866b0>} 2013-06-29 02:18:22.023 test_restkit[40395:1703] I restkit.network:RKObjectRequestOperation.m:250 GET 'http://127.0.0.1:8000/api/v1/post/' (200 OK / 4 objects) [request=0.0816s mapping=0.0109s total=0.1023s]

Someone already faced this kind of issue ?

Thx for your help.

EDIT :

Here's much logs with trace logging enable :

2013-06-29 13:03:28.554 test_restkit[42627:c07] D restkit.object_mapping:RKMappingOperation.m:1021 Finished mapping operation successfully...
2013-06-29 13:03:28.562 test_restkit[42627:c07] T restkit.network:RKObjectRequestOperation.m:178 POST 'http://127.0.0.1:8000/api/v1/user/':
request.headers={
    Accept = "application/json";
    "Accept-Language" = "en;q=1, fr;q=0.9, de;q=0.8, ja;q=0.7, nl;q=0.6, it;q=0.5";
    "Content-Type" = "application/json; charset=utf-8";
    "User-Agent" = "test_restkit/1.0 (iPad Simulator; iOS 6.1; Scale/1.00)";
}
request.body={"objects":{"password":"test","pseudo":"test","email":"test@gmail.com"}}

EDIT 2 :

By editing this line :

RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[User class] rootKeyPath:@"objects"];

by 

RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[User class] rootKeyPath:nil];

A row is created and field are correctly populated. But i still getting content-type error

Solution

  • The error is just that you're telling RestKit to expect to receive JSON, but the server isn't sending JSON (or at least not setting the correct header). The best way to resolve the issue is to change the headers on the server response such that it returns JSON. Alternatively, tell RestKit not to expect to receive JSON.