I am creating a task application which has offline mode.
While in offline mode, I am setting isSync attribute to false for each object, so that when network is available I could fetch these unsynced objects with predicate and POST them to server.
The problem is I am not being able to add attachments with each object.
In online I am sending POST request with attachment for single object like this:
if (attachments != nil && attachments.count > 0) {
task.total_attachments = [NSNumber numberWithInteger:attachments.count];
NSMutableURLRequest *request =[[RKObjectManager sharedManager] multipartFormRequestWithObject:task
method:RKRequestMethodPOST
path:URL_TASKS
parameters:nil
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
int counter = 0;
for (NSDictionary *dic in attachments) {
[formData appendPartWithFileData:UIImageJPEGRepresentation([dic objectForKey:#"image"], 0.7)
name:[NSString stringWithFormat:#"attachment[%i]", counter]
fileName:[dic objectForKey:#"name"]
mimeType:#"image/jpg"];
counter++;
}
}];
RKObjectRequestOperation *operation = [[RKObjectManager sharedManager] managedObjectRequestOperationWithRequest:request
managedObjectContext:[NSManagedObjectContext MR_defaultContext]
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
KLog(#"success");
completionHandler((DBTasks *)[mappingResult firstObject], nil);
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
KLog(#"fail");
completionHandler(nil, error);
}];
[operation start];
}
It seems attachments are added per request, not per object. Now when I am POSTing an array of objects instead of single object, how can I add attachments with each object? So that server could decide which attachment is added for which object.
Related
I am passing the URL in this method and getting the data as output. i want to assign a new value to nsmutabledictionary but it is not assigning the value.
-(NSDictionary*) getDatafromURL: (NSString*)url{
__block NSMutableDictionary *returnData=[[NSMutableDictionary alloc] init];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
returnData=(NSMutableDictionary*)responseObject;
NSLog(#"Data 1: %#",returnData);// it is printing the data
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
NSLog(#"Data 2: %#",returnData);// it is not printing any data
return returnData;
}
in this above example the Data 1 is showing value successfully
Data 2 gives me empty dictionary.why it is not assigning the new value?
That happens because you get to the line with "Data 2" first and the block is executed only afterwards, since it is an async request. I would suggest that you change your method to something like:
- (void)getDataFromURL:(NSString *)url completionHandler:(void (^)(NSMutableDictionary *returnData, NSError *error))handler {
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
returnData=(NSMutableDictionary*)responseObject;
NSLog(#"Data 1: %#",returnData);// it is printing the data
handler(returnData, nil);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
handler(nil, error);
}];
}
There might be some compile errors in the code I provided.
The other solution would be to do a synchronous request, in which case the block would be executed before the code that is after the block.
EDIT:
If you are choosing the first solution, you have to continue using it asynchronously. So you would call it like:
[self getDataFromURL:#"abc.com" completionHandler:^ (NSMutableDictionary *returnData, NSError *error) {
// process your dictionary and the error object
}];
Please check whether your Data 2 is printing before data 1? If yes, its because, the response object gets downloaded only after a certain delay. Take away the return statements. Pass the data to the dictionary to which you return the method. For eg: like
instead of
self.myDictionary = [self getDatafromURL:someURl];
to
-(void) getDatafromURL: (NSString*)url{
__block NSMutableDictionary *returnData=[[NSMutableDictionary alloc] init];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
returnData=(NSMutableDictionary*)responseObject;
NSLog(#"Data 1: %#",returnData);// it is printing the data
self.myDictionary = returnData;
// Continue whatever you want to do
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
}
Or use the dispatch methods instead of the blocks.
like
Or use manager waitUntilFinish method below.
Hi have used restkit in my several previous projects with version 0.10.0. But now i am going to move with new restkit v0.20.3.
I followed all the steps from upgrading 10.0 to 20.0 from HERE.
I am able execute my request and response also came under success blog. But i can get the property of my response object. That is very shocking for now. I can get value only by [data valueForKey:#""] which is not good i guess in restkit.
Can any one tell me about how we get value from object's property.
[operation setCompletionBlockWithSuccess:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
NSLog(#"%lu", (unsigned long)mappingResult.array.count);
DataForResponse *data = [mappingResult.array objectAtIndex:0];
User *user = [data valueForKey:#"user"];
User *user = [[data.user allObjects] firstObject];
NSLog(#"%#",[user valueForKey:#"email"]);
RKLogInfo(#"Load collection of Users: %#", mappingResult.array);
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"%#",operation.HTTPRequestOperation.responseString);
RKLogError(#"Operation failed with error: %#", error);
}];
My goal is to get value of email like from user.email
After searching & based on my restkit knowledge below code is worked.
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:[DataForResponse objectMappingForDataResponse:LOGIN] method:RKRequestMethodPOST pathPattern:nil keyPath:#"data" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[rkomForLogin addResponseDescriptor:responseDescriptor];
RKObjectRequestOperation *operation = [[RKObjectRequestOperation alloc] initWithRequest:request responseDescriptors:#[ responseDescriptor ]];
operation.targetObject = data;
[rkomForLogin postObject:nil path:#"login" parameters:dict success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
// Handled with articleDescriptor
NSLog(#"%#",operation.HTTPRequestOperation.responseString);
DataForResponse *data = [mappingResult.array objectAtIndex:0];
User *user = [[data.user allObjects] firstObject];
NSLog(#"%#",[user email]);
NSLog(#"%ld",operation.HTTPRequestOperation.response.statusCode);
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
// Transport error or server error handled by errorDescriptor
NSLog(#"%#",operation.HTTPRequestOperation.responseString);
RKLogError(#"Operation failed with error: %#", error);
}];
This is same object based response that i was getting in restkit 0.10 so this is way to execute a request.
Restkit mapping and inserting data works fine, but I need to add custom values to the database (not from JSON)
RKEntityMapping *entityMapping = [RKEntityMapping mappingForEntityForName:entityName inManagedObjectStore:managedObjectStore];
[entityMapping addAttributeMappingsFromDictionary:dict];
if (uniqKey != nil) {
entityMapping.identificationAttributes = #[ uniqKey ];
}
// Set MIME Type to JSON
manager.requestSerializationMIMEType = RKMIMETypeJSON;
// register mappings with the provider using a response descriptor
RKResponseDescriptor *responseDescriptor =
[RKResponseDescriptor responseDescriptorWithMapping:entityMapping
method:RKRequestMethodPOST
pathPattern:path
keyPath:rootKeyPath
statusCodes:[NSIndexSet indexSetWithIndex:200]];
[manager addResponseDescriptor:responseDescriptor];
[manager postObject:nil path:path parameters:queryParams success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
if (mappingResult.array.count != 0) {
NSDictionary *data = mappingResult.array[0];
NSLog(#"data: %#", data);
}else{
NSLog(#"Unable to fetch data from: %#", path);
}
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"Error response': %#", error);
}];
Other than NSPredict and filtering the data, is is possible to insert values (like string) manually while mapping?
You can modify the objects from the mapping result in the completion block, but then you need to explicitly save the context and other observers of the context will have received a save notification. This is the super simple approach.
Alternatively you could override willSave or use NSManagedObjectContextWillSaveNotification (the latter being the better option) to trigger your custom logic. Your changes would then be made inline with the RestKit changes and would be automatically saved.
Solved the issue using
[[mappingResult set] setValue:value forKey:key];
in manager on success block.
I try to save to Core Data NSManagedObject which I got from server. But I don't know any idea how to save object got from [mappingResult firstObject] in success block to Core Data. How can I do this? Should I use RKObjectManager's postObject or RKManagedRequestOperation? Should I do [managedObjectContext insertNewObjectForEntityForName:#""] before this?I can't find any instructions in official docs for this case and need some help.
**EDIT: **I initialise RKManagedRequestOperation like this:
RKResponseDescriptor* responseDescriptor =[RKResponseDescriptor
responseDescriptorWithMapping:[UserMapping mappingForUser]
method:RKRequestMethodPOST
pathPattern:kUserEndpoint
keyPath:#"profile"
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
RKRequestDescriptor* requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:[UserMapping mappingForUserProfileModel]
objectClass:[User class] rootKeyPath:#"profile" method:RKRequestMethodPOST];
[[RKObjectManager sharedManager] addRequestDescriptor:requestDescriptor];
[[RKObjectManager sharedManager] addResponseDescriptor:responseDescriptor];
userObject = [User new];
NSDictionary* userParameters = #{ #"user_id" : [User sharedUser].userId};
[[RKObjectManager sharedManager] appropriateObjectRequestOperationWithObject:resumeObject method:RKRequestMethodPOST
path:kUserEndpoint
parameters:userParameters];
RKManagedObjectRequestOperation* managedRequest = [[RKManagedObjectRequestOperation alloc]
initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:#"%#%#", kService, kUserEndpoint]]]
responseDescriptors:#[responseDescriptor]];
managedRequest.managedObjectContext = _managedObjectContext;
[managedRequest setCompletionBlockWithSuccess:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
NSLog(#"MAPPING = %#", [mappingResult firstObject]);
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
}];
[[RKObjectManager sharedManager] enqueueObjectRequestOperation:managedRequest];
EDIT2: RestKit doesn't save mapped data to CoreData. But userObject.title saves perfectly:
userObject = [_managedObjectContext insertNewObjectForEntityForName:#"User"];
userObject.title = #"USER_NAME";
NSDictionary* userParameters = #{ #"user_id" : [User sharedUser].userId};
[[RKObjectManager sharedManager] postObject:userObject path:kUserEndpoint parameters:userParameters
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
} failure:^(RKObjectRequestOperation *operation, NSError *error) { }];
You need to take a step back as your suggestions are shooting in the dark.
If you configure your object manager with a managed object store and create response descriptors with entity mappings then when you receive data as a result of requests this will be converted into managed objects. These objects will automatically be saved to the core data store before the success block is called.
Any other objects you want to create can be created as usual and you need to explicitly save the context.
Sending requests with RestKit doesn't itself change the store contents, only the response results in changes.
See this tutorial. There is an example of using RestKit with object management and Code Data
https://github.com/alexanderedge/RestKitTutorial1
I'm trying to send an object to the server (PUT request) without a mapping because I already have everything I need from the server. The callback directly goes to failure, even though the server has sucessfully created the object.
Here is an example of what I am doing:
- (void) PUTsuccess:(void (^)(RKObjectRequestOperation *operation, RKMappingResult *mappingResult))success
failure:(void (^)(RKObjectRequestOperation *operation, NSError *error))failure
{
RKObjectManager *objectManager = [YSManager objectManager];
[objectManager putObject:self path:[kPutPath stringByAppendingString:self.id] parameters:kAPIDefaultParameters success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
NSLog(#"operation.HTTPRequestOperation.request.HTTPBody: %#", [[NSString alloc] initWithData:operation.HTTPRequestOperation.request.HTTPBody encoding:NSUTF8StringEncoding]);
if (success) {
success(operation, mappingResult);
}
}
failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"Failure! Error: %#", error.localizedDescription);
if (failure) {
failure(operation, error);
}
}];
}
The server response is 201 created and I can find back my object in the server so that's all good, but still, the callback directly fires failure because it's trying to map my object, the error in the failure callback is:
Error: No response descriptors match the response loaded.
Thanks a lot, any suggestion will be appreciated!
Update 1
Added dictionary mapping now:
RKObjectMapping *idMapping = [RKObjectMapping requestMapping];
[idMapping addAttributeMappingsFromArray:#[]];
RKResponseDescriptor *responseDescriptorID = [RKResponseDescriptor responseDescriptorWithMapping:idMapping
pathPattern:[kRequestPath stringByAppendingString:#":code"]
keyPath:#"objects"
statusCodes:statusCodes];
Define a response descriptor simply to map the response (or part of it) to an NSDictionary.