RestKit 0.20.2 Routing and mapping

Question

I have the following JSON and routing mapping for it also follows. Single Item JSON

{
"quantity" : 0,
"id" : 1,
"version" : 0,
"sku" : "sku1",
"title" : "title1",
}

and all Items JSON is as follows:-

[
    {
    "quantity" : 2,
    "id" : 1,
    "version" : 0,
    "sku" : "sku1",
    "title" : "title1",
    },
    {
    "quantity" : 4,
    "id" : 2,
    "version" : 0,
    "sku" : "sku2",
    "title" : "title2",
    }
]

Here are the mappings:-

RKEntityMapping *newItemMapping = [RKEntityMapping mappingForEntityForName:NSStringFromClass([Item class]) inManagedObjectStore:manager.managedObjectStore];
newItemMapping.identificationAttributes = @[@"id"];
[newItemMapping addAttributeMappingsFromDictionary:@{
        @"id" : @"id",
        @"version" : @"version",
        @"title" : @"title",
        @"sku" : @"sku"
}];

Here is the routing info.

[[RKObjectManager sharedManager].router.routeSet addRoute:[RKRoute routeWithClass:[Item class] pathPattern:@"items/:id" method:RKRequestMethodGET]];
[[RKObjectManager sharedManager].router.routeSet addRoute:[RKRoute routeWithClass:[Item class] pathPattern:@"items" method:RKRequestMethodPOST]];
[[RKObjectManager sharedManager].router.routeSet addRoute:[RKRoute routeWithClass:[Item class] pathPattern:@"items/:id" method:RKRequestMethodPUT]];
[[RKObjectManager sharedManager].router.routeSet addRoute:[RKRoute routeWithClass:[Item class] pathPattern:@"items/:id" method:RKRequestMethodDELETE]];

The GET request works fine and loads the object correctly using above mapping.

[[RKObjectManager sharedManager] getObject:sampleItemObject path:nil parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
    RKLogInfo(@"Load collection of Items: %@", mappingResult);
}                                         failure:^(RKObjectRequestOperation *operation, NSError *error) {
    RKLogError(@"Operation failed with error: %@", error);
}];

But the POST request fails with the message shown below:-

[[RKObjectManager sharedManager] postObject:newItem path:nil parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
    NSLog(@"%@", mappingResult.array);
}                                             failure:^(RKObjectRequestOperation *operation, NSError *error) {
    NSLog(@"Failure saving post: %@", error.localizedDescription);
}];

Error message:-

Failure saving post: Expected content type {( "application/x-www-form-urlencoded", "application/json" )}, got text/html

Please assist in fixing whatever is going wrong?

Thanks, Foki

Have you set the mime type that RestKit should use? And have you set request descriptors as well as response descriptors? — Wain, Jun 10 '13 at 11:50

score 2 · Accepted Answer · answered Jun 12 '13 at 13:55

Add this line when you configure your shared manager or at some point before you make the post request:

[RKObjectManager sharedManager].requestSerializationMIMEType = RKMIMETypeJSON;

Also, make sure you have a serialization mapping defined for your object. These will allow RestKit to send the object to the server as a properly formatted JSON string.

RestKit 0.20.2 Routing and mapping

1 Answers1