这是我得到的:
food_name_token Pizza
id 1
category_id 1
review {"note"=>"tasty!", "image"=>"<RKParamsAttachment: 0x7834500>"}
这就是我所期待的:
food_name_token Pizza
id 1
category_id 1
review {"note"=>"tasty!", "image"=>{"filename"=>"image", "type"=>"image/png", "name"=>"image", "tempfile"=>"#", "head"=>"Content-Disposition: form-data; name=\"image\"; filename=\"image\"\r\nContent-Type: image/png\r\n"}}
我正在使用 Restkit,我正在尝试在 Iphone 上序列化我的数据并将其发送到我的 Rails 后端。在大多数情况下,它是有效的,但我似乎无法让我的多部分图像序列化。
图像属于“Review”类,而该类又嵌套在“Dish”类中。这是我到目前为止所拥有的:
// Set up routes
RKObjectManager* manager = [RKObjectManager objectManagerWithBaseURL:@"http://postbin.org"];
[manager.router routeClass:[Dish class] toResourcePath:@"/5a850fe1" forMethod:RKRequestMethodPOST];
[manager.router routeClass:[Review class] toResourcePath:@"/5a850fe1" forMethod:RKRequestMethodPOST];
// Map Dish Object
RKObjectMapping *dishMapping = [RKObjectMapping mappingForClass:[NSMutableDictionary class]];
[dishMapping mapKeyPath:@"id" toAttribute:@"identifier"];
[dishMapping mapKeyPath:@"category_id" toAttribute:@"categoryID"];
[dishMapping mapKeyPath:@"food_name_token" toAttribute:@"name"];
// Map Review Object
RKObjectMapping *reviewMapping = [RKObjectMapping mappingForClass:[Review class]];
[reviewMapping mapKeyPath:@"note" toAttribute:@"note"];
[reviewMapping mapKeyPath:@"image" toAttribute:@"image"];
// Define the relationship mapping
[dishMapping mapKeyPath:@"review" toRelationship:@"review" withMapping:reviewMapping];
// Set serialization for Dish Class
RKObjectMapping* dishSerializationMapping = [dishMapping inverseMapping];
[[RKObjectManager sharedManager].mappingProvider setSerializationMapping:dishSerializationMapping forClass:[Dish class] ];
// Set serialization for Review Class
RKObjectMapping* reviewSerializationMapping = [reviewMapping inverseMapping];
[[RKObjectManager sharedManager].mappingProvider setSerializationMapping:reviewSerializationMapping forClass:[Review class] ];
然后我分配值:
[Dish sharedDish].name = @"Pizza";
[Dish sharedDish].identifier = [NSNumber numberWithInt:1];
[Dish sharedDish].categoryID = [NSNumber numberWithInt:1];
[Review sharedReview].note = @"tasty!";
// Turn an image into an RKParamsAttachment object and assign it to the image attribute of the Review class
RKParams* params = [RKParams params];
UIImage* imageOrig = [UIImage imageNamed:@"pizza.jpg"];
NSData* imageData = UIImagePNGRepresentation(imageOrig);
RKParamsAttachment* image = [params setData:imageData MIMEType:@"image/png" forParam:@"image"];
[params release];
[Review sharedReview].image = image;
然后我将 Review 对象分配给 Dish 对象的 review 属性并将其发送出去:
[Dish sharedDish].review = [Review sharedReview];
[[RKObjectManager sharedManager] postObject:[Dish sharedDish] delegate:self];
我似乎以错误的方式将图像附加到对象上。
正确的做法是什么?
最佳答案
您是否尝试手动将嵌套添加到参数名称中:
RKParamsAttachment* image = [params setData:imageData
MIMEType:@"image/png" forParam:@"review[image]"];
关于objective-c - 在 RestKit 中序列化嵌套图像(Rails 后端),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8203182/