feat: Add PFObject.fromDictionary to create an object from dictionary (#1834)

Author: dplewis

Parse/Parse/Source/PFObject.h

@@ -880,6 +880,19 @@ NS_REQUIRES_PROPERTY_DEFINITIONS
                     withName:(NSString *)name
                        block:(nullable PFBooleanResultBlock)block;
 
+///--------------------------------------
+#pragma mark - Serialization
+///--------------------------------------
+
+/**
+ Creates a PFObject from a dictionary object.
+
+ @param dictionary Undecoded dictionary.
+ @param defaultClassName The className of the resulting object if none is given by the dictionary.
+ */
++ (id)fromDictionary:(NSDictionary *)dictionary
+    defaultClassName:(NSString *)defaultClassName;
+
 @end
 
 NS_ASSUME_NONNULL_END

Parse/Parse/Source/PFObject.m

@@ -809,6 +809,13 @@ - (BOOL)resolveLocalId:(NSError *__autoreleasing*)error {
     return YES;
 }
 
++ (id)fromDictionary:(NSDictionary *)dictionary
+    defaultClassName:(NSString *)defaultClassName {
+    return [self _objectFromDictionary:dictionary
+                      defaultClassName:defaultClassName
+                          completeData:YES];
+}
+
 + (id)_objectFromDictionary:(NSDictionary *)dictionary
            defaultClassName:(NSString *)defaultClassName
                completeData:(BOOL)completeData {

Parse/Tests/Unit/ObjectUnitTests.m

@@ -361,4 +361,13 @@ -(void)testLocalRESTEncoding {
     XCTAssertNil(error);
 }
 
+- (void)testFromDictionary {
+    NSDictionary *dict = @{ @"objectId": @"XYZ", @"score" : @1.0 };
+    PFObject *object = [PFObject fromDictionary:dict
+                               defaultClassName:@"Test"];
+
+    XCTAssertEqualObjects(dict[@"objectId"], object.objectId);
+    XCTAssertEqualObjects(dict[@"score"], object[@"score"]);
+}
+
 @end