Using blocks, how get errors?

Data Abstract
1

I have this method:

[[BestSellerCloud server].srvData beginPhoto_download_list:[NSDate dateFromISOString:@“2000-01-01”] startWithBlock:^(ROAsyncRequest *r)
{
NSString *fileList = [[BestSellerCloud server].srvData endPhoto_download_list:r];

    ALog(fileList);
}];

Now, the DA server is not connected at all. I execute this and don’t get errors or exceptions… How catch it when using blocks?

2

Hi,

There are two ways to catch exceptions for asynchronous requests

a) using

-asyncRequest:didFailWithException:

method of the ROAsyncRequestDelegate protocol.
For example:

-(void)doWork { ROAsyncRequest *ar = [myService beginDoWithSomething:something start:NO]; [ar setDelegate:self]; [ar startWithBlock:^(ROAsyncRequest *r){ //My block }]; }
  • (void) asyncRequest:(ROAsyncRequest *)request
    didFailWithException:(NSException *)exception {
    …
    NSLog(@"%@", exception);
    }

b) using failureBlock for the request.
For example

-(void)doWork { ROAsyncRequest *ar = [myService beginDoWithSomething:something start:NO]; [ar setFailureBlock:^(NSException *exception){ ... NSLog(@"%@", exception); }]; [ar startWithBlock:^(ROAsyncRequest *r){ //My block }]; }

Also, more detailed info about handling async requests you can find here:
http://wiki.remobjects.com/wiki/Asynchronous_Calls_in_RemObjects_SDK_(Xcode_(Mac))
http://wiki.remobjects.com/wiki/WIP:Asynchronous_Requests_in_Data_Abstract_(Xcode)

3

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