Add links/self to resource.

Author: jkrumow

Classes/JSONAPIResourceDescriptor.h

@@ -30,6 +30,8 @@
  */
 @property (strong) NSString *idProperty;
 
+@property (strong) NSString *selfLinkProperty;
+
 /** 
  * JSON-API "id" optional format. 
  *

Classes/JSONAPIResourceParser.m

@@ -191,6 +191,13 @@ + (void)set:(NSObject <JSONAPIResource> *)resource withDictionary:dictionary {
     } else {
         [resource setValue:ID forKey:[descriptor idProperty]];
     }
+    
+    if (dictionary[@"links"]) {
+        if (descriptor.selfLinkProperty) {
+            NSString *selfLink = dictionary[@"links"][@"self"];
+            [resource setValue:selfLink forKey:descriptor.selfLinkProperty];
+        }
+    }
 
     // Loops through all keys to map to properties
     NSDictionary *properties = [descriptor properties];

Project/JSONAPI/ArticleResource.m

@@ -26,6 +26,7 @@ + (JSONAPIResourceDescriptor*)descriptor {
         __descriptor = [[JSONAPIResourceDescriptor alloc] initWithClass:[self class] forLinkedType:@"articles"];
 
         [__descriptor setIdProperty:@"ID"];
+        [__descriptor setSelfLinkProperty:@"selfLink"];
 
         [__descriptor addProperty:@"title"];
         [__descriptor addProperty:@"date"

Project/JSONAPITests/JSONAPITests.m

@@ -65,6 +65,7 @@ - (void)testDataArticles {
     ArticleResource *article = jsonAPI.resource;
     XCTAssert([article isKindOfClass:[ArticleResource class]], @"Article should be a ArticleResource");
     XCTAssertEqualObjects(article.ID, @"1", @"Article id should be 1");
+    XCTAssertTrue([article.selfLink isEqualToString:@"http://example.com/articles/1"], @"Article selfLink should be ''");
     XCTAssertEqualObjects(article.title, @"JSON API paints my bikeshed!", @"Article title should be 'JSON API paints my bikeshed!'");
 
 	NSArray *dateStrings = @[@"2015-09-01T12:15:00Z",@"2015-08-01T06:15:00Z"];