mirror of
https://github.com/zhigang1992/RestKit.git
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c35d0bab1d
* Cleaned up remaining warnings about if (self = [super init]) * RKParamsExample - Highlights multi-part uploads * RKRequestQueueExample - Working with the request queue * RKBackgroundRequestExample - Examples of using the background policies for backgrounding requests * RKReachabilityExample - Shows how to work with the reachability observer * RKRelationshipMappingExample - Shows how to map related objects from JSON into an object graph * RKCoreDataExample - Shows the basics of using RestKit's Core Data examples Also rearranged dispatch of RKRequest delegate method for didStartLoad: to ensure requeue callbacks get invoked in a timely manner. refs #62
108 lines
4.5 KiB
Objective-C
108 lines
4.5 KiB
Objective-C
//
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// RKRailsRouter.m
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// RestKit
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//
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// Created by Blake Watters on 10/18/10.
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// Copyright 2010 Two Toasters. All rights reserved.
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//
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#import "RKRailsRouter.h"
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#import "../Support/NSString+InflectionSupport.h"
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@implementation RKRailsRouter
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- (id)init {
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self = [super init];
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if (self) {
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_classToModelMappings = [[NSMutableDictionary alloc] init];
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}
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return self;
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}
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- (void)dealloc {
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[_classToModelMappings release];
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[super dealloc];
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}
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- (void)setModelName:(NSString*)modelName forClass:(Class<RKObjectMappable>)class {
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[_classToModelMappings setObject:modelName forKey:class];
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}
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#pragma mark RKRouter
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- (NSObject<RKRequestSerializable>*)serializationForObject:(NSObject<RKObjectMappable>*)object method:(RKRequestMethod)method {
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// Rails does not send parameters for delete requests.
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if (method == RKRequestMethodDELETE) {
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return nil;
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}
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// set up dictionary containers
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NSDictionary* elementsAndProperties = [object propertiesForSerialization];
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NSDictionary* relationships = [object relationshipsForSerialization];
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int entryCount = [elementsAndProperties count] + [relationships count];
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NSMutableDictionary* resourceParams = [NSMutableDictionary dictionaryWithCapacity:entryCount];
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// set up model name
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NSString* modelName = [_classToModelMappings objectForKey:[object class]];
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if (nil == modelName) {
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NSString* className = NSStringFromClass([object class]);
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[NSException raise:nil format:@"Unable to find registered modelName for class '%@'", className];
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}
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NSString* underscoredModelName = [modelName underscore];
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// add elements and properties
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for (NSString* elementName in [elementsAndProperties allKeys]) {
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id value = [elementsAndProperties valueForKey:elementName];
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NSString* attributeName = [elementName stringByReplacingOccurrencesOfString:@"-" withString:@"_"];
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if (![attributeName isEqualToString:@"id"]) {
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NSString* keyName = [NSString stringWithFormat:@"%@[%@]", underscoredModelName, attributeName];
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[resourceParams setValue:value forKey:keyName];
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}
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}
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// add nested relationships
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for (NSString* elementName in [relationships allKeys]) {
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NSDictionary *relationshipElements = [relationships objectForKey:elementName];
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@try {
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//for each item in this collection, add an entry with the primary key
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//if the property is an array, set or dict, findorcreate the related item
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if ([relationshipElements isKindOfClass:[NSArray class]] ||
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[relationshipElements isKindOfClass:[NSSet class]]) {
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NSMutableArray *children = [NSMutableArray array];
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for (id child in relationshipElements) {
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//get the primary key for this object
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Class class = [child class];
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if ([class respondsToSelector:@selector(primaryKeyProperty)]) {
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NSString* primaryKey = [class performSelector:@selector(primaryKeyProperty)];
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id primaryKeyValue = [child valueForKey:primaryKey];
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NSString* primaryKeyValueString = [NSString stringWithFormat:@"%@", primaryKeyValue];
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if (primaryKeyValue == nil || [primaryKeyValueString isEqualToString:@"0"]) {
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// add child attributes, excluding id
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NSMutableDictionary* childAttributes = [RKObjectMappableGetPropertiesByElement(child) mutableCopy];
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[childAttributes removeObjectForKey:@"id"];
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[children addObject:[NSDictionary dictionaryWithDictionary:childAttributes]];
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} else {
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// add child attributes, including id
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[children addObject:RKObjectMappableGetPropertiesByElement(child)];
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}
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} else {
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NSLog(@"ERROR: expected %@ to respond to primaryKeyProperty", child);
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}
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}
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NSString *railsRelationshipPath = [NSString stringWithFormat:@"%@[%@_attributes]",
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underscoredModelName, elementName];
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[resourceParams setValue:children
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forKey:railsRelationshipPath];
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}
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}
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@catch (NSException* e) {
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NSLog(@"Caught exception:%@ when trying valueForKey with property: %@ for object:%@", e, elementName, object);
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}
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}
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return resourceParams;
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}
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@end
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