objective c - Mapping nested objects and arrays -

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good afternoon, everyone!

i'm trying figure out how map objects nested arrays, project keeps being terminated due uncaught exception. assume i'm not mapping correctly, i'm being told isn't key-value coding compliant.

how map object nested array?

following footprint of json i'm trying map, interface , implementation, , error that's being throw, respectively. finally, there link project on github, incase i've left out, or seeing full source helpful.

json

{   "href": "string",   "items": [     {       "type": "string",       "status": "string",       "name": "string",       "publisher": "string",       "publisherid": "string",       "description": "string",       "url": "string",       "smalllogoimageurl": "string",       "tileimageurl": "string",       "heroimageurl": "string",       "tags": [         "string",         "string"       ],       "createdon": "2015-04-22t18:55:40.782z",       "downloadurl": "string",       "getproductcodeurl": "string",       "metadata": {         "exetype": "string",         "packagefilename": "string",         "installdirectory": "string",         "executablename": "string"       },       "id": "string"     }   ] }

interface (.h)

@interface sfrontpageitem : nsobject  @property (nonatomic, strong) nsstring *type; @property (nonatomic, strong) nsstring *status; @property (nonatomic, strong) nsstring *name; @property (nonatomic, strong) nsstring *publisher; @property (nonatomic, strong) nsstring *publisherid; @property (nonatomic, strong) nsstring *productdescription; @property (nonatomic, strong) nsstring *url; @property (nonatomic, strong) nsstring *smalllogoimageurl; @property (nonatomic, strong) nsstring *tileimageurl; @property (nonatomic, strong) nsstring *heroimageurl; @property (nonatomic, strong) nsarray *tags; @property (nonatomic, strong) nsstring *createdon; @property (nonatomic, strong) nsstring *downloadurl; @property (nonatomic, strong) nsstring *getproductcodeurl; @property (nonatomic, strong) nsarray *metadata; @property (nonatomic, strong) nsstring *productid;  @end   @interface sfrontpage : nsobject  @property (nonatomic, strong) nsstring *href; @property (nonatomic, strong) nsarray *items;  @end

implementation (.m)

- (void) getfrontpage {      appdelegate *appdelegate = [[nsapplication sharedapplication] delegate];      rkobjectmapping *itemmapping = [rkobjectmapping mappingforclass:[sfrontpageitem class]];      [itemmapping addattributemappingsfromdictionary:@{                                                         @"type": @"type",                                                         @"status": @"status",                                                         @"name": @"name",                                                         @"publisher": @"publisher",                                                         //@"publisherid": @"publisherid",                                                         @"description": @"description",                                                         @"url": @"url",                                                         //@"smalllogoimageurl": @"smalllogoimageurl",                                                         @"tileimageurl": @"tileimageurl",                                                         //@"heroimageurl": @"heroimageurl",                                                         //@"tags": @"tags",                                                         @"createdon": @"createdon",                                                         //@"downloadurl": @"downloadurl",                                                         //@"getproductcodeurl": @"getproductcodeurl",                                                         //@"metadata": @"metadata",                                                         @"id": @"productid"                                                     }];     //itemmapping.forcecollectionmapping = yes;       rkobjectmapping *frontpagemapping = [rkobjectmapping mappingforclass:[sfrontpage class]];     [frontpagemapping addattributemappingsfromdictionary:@{                                                            @"href": @"href"                                                         }];       [frontpagemapping addpropertymapping:[rkrelationshipmapping relationshipmappingfromkeypath:@"items"                                                                                      tokeypath:@"items"                                                                                    withmapping:itemmapping]];       rkresponsedescriptor *responsedescriptor = [rkresponsedescriptor responsedescriptorwithmapping:frontpagemapping                                                                                             method:rkrequestmethodget                                                                                        pathpattern:nil                                                                                            keypath:nil                                                                                        statuscodes:rkstatuscodeindexsetforclass(rkstatuscodeclasssuccessful)];      [self.objectmanager.httpclient setauthorizationheaderwithusername:self.sconnection.apikey.key password:self.sconnection.apikey.secret];     [self.objectmanager addresponsedescriptor:responsedescriptor];     [self.objectmanager getobjectsatpath:@"/api/frontpage/rest" parameters:nil         success:^(rkobjectrequestoperation *operation, rkmappingresult *result)         {              sfrontpage *newfrontpage = result.firstobject;             nslog (@"   href: %@", newfrontpage.href);              //nslog (@"items: %@", newfrontpage.items.firstobject);             //sfrontpageitem *newfrontpageitem = newfrontpage.items.firstobject;             //nslog (@"unexpected great thing %@", newfrontpageitem );              [appdelegate.loginviewcontroller apiconnectionsuccess];           } failure:^(rkobjectrequestoperation *operation, nserror *error)         {              [appdelegate.loginviewcontroller updateloginwindowheaderlabelto:@"unable load frontpage"];             [appdelegate.loginviewcontroller apiconnectionfailure];         }]; }

error

[<sfrontpageitem 0x6180001026d0> setvalue:forundefinedkey:]: class not key value coding-compliant key description.

source

the full source can found on github, relevant files being apimanager.h & apimanager.m.

i hope i've been clear enough, miss mark when forming question don't understand. i'm new both objc, , restkit, i'm sure there lot of confusing things in code. taking time read through it, , consider question. if can clarify anything, please let me know!

michael

you map description description, property has identifier productdescription. change mapping or property name.


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