I've rest Object as:
#interface VFEQuestionnaireRest : NSObject
#property(copy ,nonatomic) NSNumber *iid;
#property(copy, nonatomic)NSString *namePoll;
#property(copy, nonatomic)NSSet *questions;
#end
and coming JSON as:
{"questionnaire":[
{"id":4,"namePoll":"questionario4","questions":
{"id":13,"idQuestionnaire":4,"nameQuestion":"costo?",
"questionType":{"id":2,"nameType":"WHOLE"}}}]}
The value "iid" is always "0", and namePoll have its correct value.
How can mapping int value from JSON to NSNumber objC?
-
RKObjectMapping *questionnaireMapping = [RKObjectMapping mappingForClass:[VFEQuestionnaireRest class]];
[questionnaireMapping addAttributeMappingsFromDictionary:
#{#"iid":#"id",
#"namePoll":#"namePoll"
}];
[questionnaireMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"questions" toKeyPath:#"questions" withMapping:questionMapping]];
I believe your mapping is incorrect. It should be source -> destination and not the other way around:
RKObjectMapping *questionnaireMapping = [RKObjectMapping mappingForClass:[VFEQuestionnaireRest class]];
[questionnaireMapping addAttributeMappingsFromDictionary:
#{ #"id":#"iid",
#"namePoll":#"namePoll" }];
Restkit performs int -> NSNumber conversion automatically.
Related
I'm trying to send multiple objects as an array to a Server with RestKit. Unfortunately I'm not able to do so.
Following my pretty simple objects as well as the mapping for RestKit:
Example Objects
#interface MyExampleObject : NSObject
#property NSString *key;
#property NSString *value;
#end
Array-Object holding multiple of MyExampleObject
#interface MyArray : NSObject
#property NSArray *array;
#end
Mapping
RKObjectMapping *mappingObject = [RKObjectMapping mappingForClass:[MyExampleObject class]];
[mappingObject addAttributeMappingsFromDictionary:#{
#"key" : #"key",
#"value" : #"value"
}];
RKObjectMapping *mappingArray = [RKObjectMapping mappingForClass:[MyArray class]];
[mappingArray addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"dummy" toKeyPath:#"array" mappingObject]];
If I do it this way I’ll get the following result:
{
"dummy" : [
{
"key" : "MyKey1",
"value" : "MyValue1"
},
{
"key" : "MyKey2",
"value" : "MyValue2"
}
]
}
But I want only the array without a „key“. Like this:
[
{
"key" : "MyKey1",
"value" : "MyValue1"
},
{
"key" : "MyKey2",
"value" : "MyValue2"
}
]
It seemed obvious for me to change the relationshipMappingFromKeyPath to nil. But this didn't worked (got a setObjectForKey: key cannot be nil error).
What do I have to do to send multiple MyExampleObjects to my Server as a JSON-Array?
Solution:
As Wain suggested I've removed my "Top-Mapping". Following the final mapping:
RKObjectMapping *mappingObject = [RKObjectMapping mappingForClass:[MyExampleObject class]];
[mappingObject addAttributeMappingsFromDictionary:#{
#"key" : #"key",
#"value" : #"value"
}];
And when I post the stuff to my Server I just do something like this:
NSArray *array = [NSArray arrayWithObjects:myExampleObject1, myExampleObject2, nil];
[[RKObjectManager sharedManager] postObject:array path:#"/myPath/" parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
...
}
Just get rid of the MyArray object and the associated mapping and directly pass the NSArray of MyExampleObjects to the post method. RestKit will understand that it's an array of objects to map and do the right thing.
How can I post an array of objects to my server with RESTKit?
I have a custom object called Contact which have some properties like name, phone etc. I would like to send an array of these Contact objects to the server.
The method I know for this is postObject:path:parameters:success:failure, but what object I put here? If I put Contact - how will it know it is an array? and if I put NSArray, how will it know it is a Contact?
My Contact object header file is:
#interface Contact : NSObject
#property (strong, nonatomic) NSString *name;
#property (strong, nonatomic) NSString *phone;
#property (nonatomic) NSInteger order;
#property (strong, nonatomic) NSString *firstName;
#property (strong, nonatomic) NSString *lastName;
#end
my response mapping is:
RKObjectMapping *personMapping = [RKObjectMapping mappingForClass:[Contact class]];
[personMapping addAttributeMappingsFromDictionary:#{
#"username": #"name",
#"firstname" : #"firstName",
#"lastname" : #"lastName",
}];
my response descriptor is:
RKResponseDescriptor *personResponseDescriptorForArrayOfPhones =
[RKResponseDescriptor responseDescriptorWithMapping:personMapping
method:RKRequestMethodANY
pathPattern:#"getUsersInfoByPhones"
keyPath:nil
statusCodes:[NSIndexSet indexSetWithIndex:200]];
my request mapping is:
RKObjectMapping *personRequestMapping = [RKObjectMapping requestMapping ];
[personRequestMapping addAttributeMappingsFromDictionary:#{
#"name": #"username",
#"firstName" : #"firstName",
#"lastName" : #"lastName",
#"phone" : #"usernames"
}];
my request descriptor is:
RKRequestDescriptor *personRequestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:personRequestMapping
objectClass:[Contact class]
rootKeyPath:nil
method:RKRequestMethodAny];
Does this implementation looks good?
Also, this array I want to send to the server could be very big, around 200-1000 objects. Is that possible with RESTKit?
Update: Actually, I would prefer to send an array of strings (which would be phone numbers), and get from the server the Contact objects I have. How can I set RESTKit to post the array of strings and to expect a response of an array of Contact objects?
The json I need to send looks like this:
{
"usernames":["11","22"]
}
the json I expect to get is:
[
{
"_id" : "53e23a54e811310000955f70",
"profileUpdatesCounter" : 3,
"lastname" : "SMITH",
"firstname" : "BOB",
"username" : "11"
}
]
I am trying to serialize a SyncRewardDataRequestModel in my response body. "an_id" serializes fine. However, the SyncRewardDataInputModel objects within the NSArray always serializes to a empty NSArray. I have confirmed that I am passing a correct value in my NSArray - Does anyone see what is incorrect with my mapping?
Classes:
#interface SyncRewardDataInputModel : NSObject
#property (nonatomic,copy) NSNumber *test_id;
#end
#interface SyncRewardDataRequestModel : NSObject
#property (nonatomic,strong) NSArray *syncRewardDataInputs;
#property (nonatomic,copy) NSNumber *an_id;
#end
The following is my response descriptor:
//Populate mapping
RKObjectMapping *requestMapping = [RKObjectMapping requestMapping]; // objectClass == NSMutableDictionary
[requestMapping addAttributeMappingsFromDictionary:#{#"an_id": #"an_id"}];
RKObjectMapping *syncRewardDataInputsMapping = [RKObjectMapping mappingForClass:[SyncRewardDataInputModel class]];
[syncRewardDataInputsMapping addAttributeMappingsFromDictionary:#{#"test_id": #"test_id"}];
//Combine
RKRelationshipMapping *arrayRelation = [RKRelationshipMapping relationshipMappingFromKeyPath:#"syncRewardDataInputs" toKeyPath:#"downloadCardResponseDTOs" withMapping:syncRewardDataInputsMapping];
[requestMapping addPropertyMapping:arrayRelation];
//Put it in a request
RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[SyncRewardDataRequestModel class] rootKeyPath:nil method:RKRequestMethodAny];
return requestDescriptor;
This line:
RKObjectMapping *syncRewardDataInputsMapping = [RKObjectMapping mappingForClass:[SyncRewardDataInputModel class]];
should be:
RKObjectMapping *syncRewardDataInputsMapping = [RKObjectMapping requestMapping];
because for a request you are always trying to map to an NSMutableDictionary so that JSON can be generated from it for transmission.
Often you will have a mapping used for the received data, linked to a response descriptor, and you can use inverseMapping on that to generate the mapping to be used for your request descriptor.
I am new to RestKit and am trying to map a json object that contains an array of objects my model. I have debugged and found that the response hits my server --> json is return --> RestKit says the mapping was successful and that I have 1 object mapped... However, the errorCode field and the array of businesses (bList) are both null when I do BusinessObjectModel *response = result.array.firstObject;
in the OnSuccessBlock.
Json:
{
"bList":
[
{
"id": 1,
"name": "aName",
"owner": 1,
"category": 1,
}
{
"id": 2,
"name": "aName2",
"owner": 1,
"category": 1,
}
],
"errorCode": 0
}
Want to map this Json to this objective c object:
BussinessObjectModel Object Mapping:
RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[BusinessObjectModel class]];
[responseMapping addAttributeMappingsFromDictionary:#{
#"id": #"business_id",
#"name": #"business_name",
}];
return responseMapping;
BModel:
#interface bModel : NSObject
#property (nonatomic, copy) NSNumber *errorCode;
#property (nonatomic, copy) NSMutableArray *bList;
+(RKObjectMapping *) getMapping;
#end
BModel Object Mapping:
RKObjectMapping *bMapping = [BusinessObjectModel getMapping];
RKObjectMapping *buslstMapping = [RKObjectMapping mappingForClass:[BModel class]];
[buslstMapping addAttributeMappingsFromDictionary:#{#"errorCode": #"errorCode"}];
// Define the relationship mapping
[buslstMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:nil
toKeyPath:nil
withMapping:bussinessMapping]];
return buslstMapping;
Descriptor looks as follows:
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:ResponseMapping method:RKRequestMethodAny pathPattern:nil keyPath:#"bList" statusCodes:nil];
EDIT
I want to map the above Json to :
#interface bModel : NSObject
#property (nonatomic, copy) NSNumber *errorCode;
#property (nonatomic, copy) NSMutableArray *bList;
#end
Where bList is an array of the following object:
#interface Business : NSObject
#property (nonatomic, copy) NSNumber *id;
#property (nonatomic, copy) NSString *name;
#property (nonatomic, copy) NSNumber *id;
#property (nonatomic, copy) NSNumber *id;
#end
I guess the question is how do I do nested relationships (what would the Response Descriptor have to be for the above relationship)?
Great to see that your using RestKit. Your first helper will be the logging that RestKit provides. Add this line of code do your AppDelegate and watch the console for errors.
// The * will send everything RestKit does to the console
// Replace the * with the module you want to check (Network/CoreData/...)
RKLogConfigureByName("RestKit/*", RKLogLevelTrace);
When looking at your JSON you want to get the objects from the keyPath "bList" on the one hand and on the other hand the error code or message when something goes wrong. RestKit provides a build in error handling to get that information out of your JSON.
Init the RKObjectMapping for the RKErrorMessage class and add a RKResponseDescriptor to your requests with the right keyPaths including the range of status codes (here using client errors). RestKit will automatically detect the error code (when sent within the header) and apply the mapping to get the content of the error message.
// Init error mapping
RKObjectMapping *errorMapping = [RKObjectMapping mappingForClass:[RKErrorMessage class]];
[errorMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:#"errorMessage"]];
// Add mapping as response descriptor
RKResponseDescriptor *errorDescriptor =
[RKResponseDescriptor responseDescriptorWithMapping:errorMapping
method:RKRequestMethodGET
pathPattern:nil
keyPath:#"message" // Edit the keyPath to the value of your JSON (e.g. errorCode)
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassClientError)];
[RKObjectManager.sharedManager addResponseDescriptor:errorDescriptor];
To get the error message when a failure occurs, you simply get the message object. When using a block to get objects, you can use the userInfo dictionary from the given NSError.
RKErrorMessage *errorMessage = [[error.userInfo objectForKey:RKObjectMapperErrorObjectsKey] firstObject];
NSLog(#"Error: %#", errorMessage);
Now you can simplify your object model a bit and concentrate on mapping the BusinessObjectModel. When mapping the object using the dictionary, you need to check of your local attributes matches the value in your JSON.
RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[BusinessObjectModel class]];
[responseMapping addAttributeMappingsFromDictionary:#
{
#"value_from_remote_json": #"value_in_local_object", // e.g. #"id" : #"business_id"
...
}];
return responseMapping;
You don't need to use a RKRelationshipMapping any more. Reconfigure your objects/mappings and try again. The logging will show you the provided mapping and if the mapping operations are working. Last bit not least make sure that the mapping is in memory when using it by throwing an NSAssert error.
RKObjectMapping *bMapping = [BusinessObjectModel getMapping];
NSAssert(bMapping, #"bMapping mapping must not be nil");
Edit
To map values without a keyPath (like the "errorCode" field) additionally to the mapping of your objects, you'll need to provide an object with an according mapping. Taking the example from the documentation you'll end with something like:
// Init object
#interface RKErrorCode : NSObject
#property (nonatomic) NSNumber *errorCode;
#end
// Init mapping
RKObjectMapping *codeMapping = [RKObjectMapping mappingForClass:[RKErrorCode class]];
[codeMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:#"errorCode"]];
// Add response descriptor for request
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:codeMapping method:RKRequestMethodAny pathPattern:nil keyPath:#"errorCode" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[[RKObjectManager sharedManager] addResponseDescriptor:responseDescriptor];
Your response descriptor shouldn't have keyPath:#"bList", it should be set to nil as you don't want to drill in.
It also shouldn't use ResponseMapping based on the structure of your mappings, it should use the other mapping.
Your mapping is also wrong here:
#{
#"business_id": #"business_id",
#"business_name": #"business_name",
}];
It should be:
#{
#"id": #"business_id",
#"name": #"business_name",
}];
Because this specifies the JSON names and the core data names.
To fix your new issues, put this back:
[buslstMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"bList" toKeyPath:#"bList"
And this:
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:buslstMapping method:RKRequestMethodAny pathPattern:nil keyPath:nil statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
Found the solution and it looks something like this:
RKObjectMapping *bModelMapping = [RKObjectMapping mappingForClass:[business class]];
[bModelMapping addAttributeMappingsFromDictionary:#{
#"id": #"business_id",
#"name": #"business_name",
}];
RKObjectMapping *buslstMapping = [RKObjectMapping mappingForClass:[bModel class]];
[buslstMapping addAttributeMappingsFromDictionary:#{#"errorCode": #"errorCode"}];
// Define the relationship mapping
[buslstMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"bList"
toKeyPath:#"bList" bModelMapping]];
return buslstMapping;
Also Change the following:
#property (nonatomic, copy) NSMutableArray *bList;
to
#property (nonatomic, retain) NSArray *bList;
This gives me a bModel object with an error code value and a bList which is an array of business which can then be cast to a business by doing the following Business *business = [bModel.blist firstObject];
Got:
#property(nonatomic, retain) NSString *user;
#property(nonatomic, retain) NSString *token;
#property(nonatomic, retain) NSArray *list;// NSNumber only please!
And:
RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[MyResponse class]];
[mapping addAttributeMappingsFromDictionary:#{
#"user" : #"user",
#"token" : #"token",
#"list" : #"list",
}];
And I receive Json:
{"user":"foobar","token":"azerty","list":[0,1,"2"]}
Unfortunately, list will be a mix of NSString and NSNumber. How to tell RestKit 0.2x I only want NSNumber or NSString in my NSArray?
RestKit uses KVC so surely if you just want numbers you could use the appropriate keyPath e.g. if I wanted the numbers to always be integers I could use the method integerValue which both NSNumber and NSString have:
RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[MyResponse class]];
[mapping addAttributeMappingsFromDictionary:#{
#"user" : #"user",
#"token" : #"token",
#"list.integerValue" : #"list",
}];
Rather than rewriting a JSON parser to do your particular task, why not just post-process 'list' and check each object with if([list[i] isKindOfClass:[NSString class]]) and convert it to an NSNumber?