我正在制作一个从Wordpress网站获得3个JSON的应用程序，然后将它们映射到3个不同的类：产品，位置和类别，产品和类别映射工作得很好，但是当我映射地点时，它会混合使用产品，并导致两者都出错，继承我的位置类：
@interface Location : NSObject
@property (nonatomic, retain) NSString * alias;
@property (nonatomic, retain) NSSet * street;
@property (nonatomic, retain) NSSet * number;
@property (nonatomic, retain) NSSet * state;
@property (nonatomic, retain) NSSet * city;
@property (nonatomic, retain) NSSet * zipcode;
@property (nonatomic, copy) NSSet * locationId;
@end
这是Products类：
@interface AllProducts : NSObject
@property (nonatomic, copy) NSString * name;
@property (nonatomic, copy) NSSet * locationId;
@property (nonatomic, copy) NSSet * productCategoryId;
@property (nonatomic, strong) NSMutableArray *prices;
@end
下面是Im使用的映射：
//Products Mapping
RKObjectMapping *productsMapping = [RKObjectMapping mappingForClass:[AllProducts class]];
[productsMapping addAttributeMappingsFromDictionary:@{
@"title": @"name",
@"custom_fields.product_0_sucursal": @"locationId",
/*@"custom_fields.tipo_de_producto": @"productType",
@"custom_fields.product_0_price": @"price",
@"custom_fields.product_0_real_id": @"realId",
@"custom_fields.product_0_size": @"size",
@"custom_fields.product_0_modificador": @"mod",
@"custom_fields.product_0_temperatura": @"temp",*/
@"categories.id": @"productCategoryId"
}];
[productsMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"custom_fields"
toKeyPath:@"prices"
withMapping:pricesMapping]];
RKResponseDescriptor *productsResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:productsMapping method:RKRequestMethodAny pathPattern:nil keyPath:@"posts" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[objectManager addResponseDescriptor:productsResponseDescriptor];
//Locations Mapping
RKObjectMapping *locationsMapping = [RKObjectMapping mappingForClass:[Location class]];
[locationsMapping addAttributeMappingsFromDictionary:@{
@"title": @"alias",
@"custom_fields.calle": @"street",
@"custom_fields.numero": @"number",
@"custom_fields.estado": @"state",
@"custom_fields.ciudad": @"city",
@"custom_fields.codigo_postal": @"zipcode",
@"custom_fields.locationid": @"locationId"
}];
RKResponseDescriptor *locationsResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:locationsMapping method:RKRequestMethodAny pathPattern:nil keyPath:@"posts" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[objectManager addResponseDescriptor:locationsResponseDescriptor];
我在AppDelegate中有映射定义，对象的调用在tableview控制器中
对于地点：
RKObjectManager* objectManager = [RKObjectManager sharedManager];
NSDictionary *parameters;
parameters = @{
@"json" : @"get_posts",
@"post_type" : @"locations"
};
[objectManager getObjectsAtPath:@"" parameters:parameters success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult)
{
_locations = [mappingResult array];
[[self tableView]reloadData];
}
failure:^(RKObjectRequestOperation *operation, NSError *error){
[self handleFailure:operation withError:error];
}];
和产品：
//Getting all the products
RKObjectManager *objectManager = [RKObjectManager sharedManager];
//Mutable array that will contain the products when a category is selected
_productByCategory = [[NSMutableArray alloc] init];
NSDictionary *parameters;
http://localhost/?json=get_posts&post_type=products
parameters = @{
@"json" : @"get_posts",
@"post_type" : @"products"
};
//Getting all the products and then selecting only the products that are in the category selected
[objectManager getObjectsAtPath:@"" parameters:parameters success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult)
{
_products = [mappingResult array];
NSArray *tempProducts = _products;
//NSString *productToAdd;
BOOL isDuplicate = NO;
for(NSSet *currentProduct in tempProducts)
{
for(NSSet *product in _productByCategory)
{
if ([[currentProduct valueForKey:@"_name"] isEqualToString:[product valueForKey:@"_name"]]){
isDuplicate = YES;
break;
}
}
if(!isDuplicate && [currentProduct valueForKey:@"_name"] != nil && [[currentProduct valueForKey:@"_productCategoryId" ] containsObject:category.categoryId] && [[currentProduct valueForKey:@"_locationid"] containsObject:location.locationId]){
//productToAdd = [[NSString alloc] initWithFormat:@"%@", [currentProduct valueForKey:@"_name"]];
[_productByCategory addObject:currentProduct];
}
/*if([[currentProduct valueForKey:@"_productCategoryId" ] containsObject:category.categoryId])
{
[_productByCategory addObject:currentProduct];
}*/
}
[[self tableView]reloadData];
}
failure:^(RKObjectRequestOperation *operation, NSError *error){
[self handleFailure:operation withError:error];
}];
//update view title
self.title = [category.categoryName lowercaseString];
及以下是两者的JSON：
http://localhost/?json=get_posts&post_type=locations
{
"status": "ok",
"count": 2,
"count_total": 2,
"pages": 1,
"posts": [
{
"id": 263,
"type": "locations",
"slug": "sucursal-plaza-regia",
"url": "http://localhost/?locations=sucursal-plaza-regia",
"status": "publish",
"title": "Sucursal Plaza Regia",
"title_plain": "Sucursal Plaza Regia",
"content": "",
"excerpt": "",
"date": "2014-03-25 15:44:29",
"modified": "2014-03-25 15:44:29",
"categories": [],
"tags": [],
"author": {
"id": 1,
"slug": "arturocalvo",
"name": "arturocalvo",
"first_name": "",
"last_name": "",
"nickname": "arturocalvo",
"url": "",
"description": ""
},
"comments": [],
"attachments": [],
"comment_count": 0,
"comment_status": "closed",
"custom_fields": {
"calle": [
"Av. Eugenio Garza Sada"
],
"numero": [
"No. 3720 Local L-3"
],
"estado": [
"Nuevo Leon"
],
"ciudad": [
"Monterrey"
],
"codigo_postal": [
"64780"
],
"locationid": [
"3"
]
}
},
{
"id": 256,
"type": "locations",
"slug": "sucursal-plaza-404-2",
"url": "http://localhost/?locations=sucursal-plaza-404-2",
"status": "publish",
"title": "Sucursal Plaza 404",
"title_plain": "Sucursal Plaza 404",
"content": "",
"excerpt": "",
"date": "2014-03-24 16:58:20",
"modified": "2014-03-24 16:58:20",
"categories": [],
"tags": [],
"author": {
"id": 1,
"slug": "arturocalvo",
"name": "arturocalvo",
"first_name": "",
"last_name": "",
"nickname": "arturocalvo",
"url": "",
"description": ""
},
"comments": [],
"attachments": [],
"comment_count": 0,
"comment_status": "closed",
"custom_fields": {
"calle": [
"Av. Gomez Morin"
],
"numero": [
"404 Local A3-5"
],
"estado": [
"Nuevo Leon"
],
"ciudad": [
"San Pedro Garza Garcia"
],
"codigo_postal": [
"66220"
],
"locationid": [
"2"
]
}
}
],
"query": {
"ignore_sticky_posts": true,
"post_type": "locations"
}
}
{
"status": "ok",
"count": 5,
"count_total": 5,
"pages": 1,
"posts": [
{
"id": 267,
"type": "products",
"slug": "cafe-americano-3",
"url": "http://localhost/?products=cafe-americano-3",
"status": "publish",
"title": "Cafe Americano",
"title_plain": "Cafe Americano",
"content": "",
"excerpt": "",
"date": "2014-03-25 16:55:58",
"modified": "2014-03-25 16:55:58",
"categories": [
{
"id": 1,
"slug": "coffeebar",
"title": "Coffee Bar",
"description": "",
"parent": 0,
"post_count": 3
}
],
"tags": [],
"author": {
"id": 1,
"slug": "arturocalvo",
"name": "arturocalvo",
"first_name": "",
"last_name": "",
"nickname": "arturocalvo",
"url": "",
"description": ""
},
"comments": [],
"attachments": [],
"comment_count": 0,
"comment_status": "closed",
"custom_fields": {
"tipo_de_producto": [
"bebida"
],
"tipo_de_bebida": [
"cafe"
],
"product_0_size": [
"l"
],
"product_0_price": [
"30"
],
"product_0_sucursal": [
"2"
],
"product_0_temperatura": [
"caliente"
],
"product_0_modificador": [
"regular"
],
"product_0_priceid": [
"432"
],
"product": [
"1"
]
}
},
{
"id": 266,
"type": "products",
"slug": "cafe-americano-2",
"url": "http://localhost/?products=cafe-americano-2",
"status": "publish",
"title": "Cafe Americano",
"title_plain": "Cafe Americano",
"content": "",
"excerpt": "",
"date": "2014-03-25 16:55:23",
"modified": "2014-03-25 16:55:23",
"categories": [
{
"id": 1,
"slug": "coffeebar",
"title": "Coffee Bar",
"description": "",
"parent": 0,
"post_count": 3
}
],
"tags": [],
"author": {
"id": 1,
"slug": "arturocalvo",
"name": "arturocalvo",
"first_name": "",
"last_name": "",
"nickname": "arturocalvo",
"url": "",
"description": ""
},
"comments": [],
"attachments": [],
"comment_count": 0,
"comment_status": "closed",
"custom_fields": {
"tipo_de_producto": [
"bebida"
],
"tipo_de_bebida": [
"cafe"
],
"product_0_size": [
"s"
],
"product_0_price": [
"25"
],
"product_0_sucursal": [
"3"
],
"product_0_temperatura": [
"caliente"
],
"product_0_modificador": [
"regular"
],
"product_0_priceid": [
"438"
],
"product": [
"1"
]
}
}
问题在于，当我只提出产品请求时，它工作正常，当我只对位置提出请求时它也可以正常工作，但是当这两个产生时，位置会尝试映射到产品类和产品尝试要映射到位置类，我得到一个错误，有人可以帮我知道我做错了吗？，提前谢谢
答案 0 :(得分：0)
因为RestKit无法分辨响应之间的差异，因为两个描述符的路径模式和关键路径是相同的（所有差异都在URL查询参数中，并且RestKit不使用它们。）
因此，您需要更改请求URL（并在响应描述符上更改pathPattern:nil）。或者更改JSON（因此您有不同的密钥路径）。或者在每个请求之后删除响应描述符，并在请求之前仅重新创建适当的响应描述符。或者使用2个不同的对象管理器，每个对象管理器只有1个响应描述符。