feat: add ParseObjectMutable protocol (#270)

* • Updatable * Requested changes * Requested changes + Line length * Requested changes * Requested changes Co-authored-by: Corey <coreyearleon@icloud.com>
parse-community · Oct 31, 2021 · 321905d · 321905d
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -10,6 +10,8 @@
 
 __Improvements__
 - Make ParseUser.current, ParseInstallation.current, ParseConfig.current immutable. This prevents accidently setting to nil. When developers want to make changes, they should make mutable copies, mutate, then save ([#266](https://github.com/parse-community/Parse-Swift/pull/266)), thanks to [Corey Baker](https://github.com/cbaker6).
+- Added the ParseObjectMutable protocol to make emptyObject more developer friendly ([#270](https://github.com/parse-community/Parse-Swift/pull/270)), thanks to [Damian Van de Kauter](https://github.com/novemTeam).
+
 
 ### 2.0.3
 [Full Changelog](https://github.com/parse-community/Parse-Swift/compare/2.0.2...2.0.3)

diff --git a/ParseSwift.playground/Pages/1 - Your first Object.xcplaygroundpage/Contents.swift b/ParseSwift.playground/Pages/1 - Your first Object.xcplaygroundpage/Contents.swift
@@ -30,7 +30,7 @@ do {
 }
 
 //: Create your own value typed `ParseObject`.
-struct GameScore: ParseObject {
+struct GameScore: ParseObject, ParseObjectMutable {
     //: These are required by ParseObject
     var objectId: String?
     var createdAt: Date?
@@ -39,20 +39,6 @@ struct GameScore: ParseObject {
 
     //: Your own properties.
     var score: Int = 0
-
-    /*:
-     It's recommended the developer adds the emptyObject computed property or similar.
-     Gets an empty version of the respective object. This can be used when you only need to update a
-     a subset of the fields of an object as oppose to updating every field of an object. Using an
-     empty object and updating a subset of the fields reduces the amount of data sent between
-     client and server when using `save` and `saveAll` to update objects.
-    */
-    var emptyObject: Self {
-        var object = Self()
-        object.objectId = objectId
-        object.createdAt = createdAt
-        return object
-    }
 }
 
 //: It's recommended to place custom initializers in an extension
@@ -110,11 +96,11 @@ score.save { result in
         assert(savedScore.score == 10)
 
         /*: To modify, need to make it a var as the value type
-            was initialized as immutable. Using `emptyObject`
+            was initialized as immutable. Using `mutable`
             allows you to only send the updated keys to the
             parse server as opposed to the whole object.
         */
-        var changedScore = savedScore.emptyObject
+        var changedScore = savedScore.mutable
         changedScore.score = 200
         changedScore.save { result in
             switch result {
@@ -202,11 +188,11 @@ assert(savedScore?.updatedAt != nil)
 assert(savedScore?.score == 10)
 
 /*:  To modify, need to make it a var as the value type
-    was initialized as immutable. Using `emptyObject`
+    was initialized as immutable. Using `mutable`
     allows you to only send the updated keys to the
     parse server as opposed to the whole object.
 */
-guard var changedScore = savedScore?.emptyObject else {
+guard var changedScore = savedScore?.mutable else {
     fatalError()
 }
 changedScore.score = 200

diff --git a/ParseSwift.playground/Pages/15 - Custom ObjectId.xcplaygroundpage/Contents.swift b/ParseSwift.playground/Pages/15 - Custom ObjectId.xcplaygroundpage/Contents.swift
@@ -21,7 +21,7 @@ npm start -- --appId applicationId --clientKey clientKey --masterKey masterKey -
 initializeParseCustomObjectId()
 
 //: Create your own value typed `ParseObject`.
-struct GameScore: ParseObject {
+struct GameScore: ParseObject, ParseObjectMutable {
     //: These are required by ParseObject
     var objectId: String?
     var createdAt: Date?
@@ -30,20 +30,6 @@ struct GameScore: ParseObject {
 
     //: Your own properties.
     var score: Int = 0
-
-    /*:
-     It's recommended the developer adds the emptyObject computed property or similar.
-     Gets an empty version of the respective object. This can be used when you only need to update a
-     a subset of the fields of an object as oppose to updating every field of an object. Using an
-     empty object and updating a subset of the fields reduces the amount of data sent between
-     client and server when using `save` and `saveAll` to update objects.
-    */
-    var emptyObject: Self {
-        var object = Self()
-        object.objectId = objectId
-        object.createdAt = createdAt
-        return object
-    }
 }
 
 //: It's recommended to place custom initializers in an extension
@@ -82,11 +68,11 @@ score.save { result in
         print("Saved score: \(savedScore)")
 
         /*: To modify, need to make it a var as the value type
-            was initialized as immutable. Using `emptyObject`
+            was initialized as immutable. Using `mutable`
             allows you to only send the updated keys to the
             parse server as opposed to the whole object.
         */
-        var changedScore = savedScore.emptyObject
+        var changedScore = savedScore.mutable
         changedScore.score = 200
         changedScore.save { result in
             switch result {

diff --git a/ParseSwift.playground/Pages/4 - User - Continued.xcplaygroundpage/Contents.swift b/ParseSwift.playground/Pages/4 - User - Continued.xcplaygroundpage/Contents.swift
@@ -13,7 +13,7 @@ import ParseSwift
 PlaygroundPage.current.needsIndefiniteExecution = true
 initializeParse()
 
-struct User: ParseUser {
+struct User: ParseUser, ParseObjectMutable {
     //: These are required by `ParseObject`.
     var objectId: String?
     var createdAt: Date?
@@ -32,20 +32,6 @@ struct User: ParseUser {
     var score: GameScore?
     var targetScore: GameScore?
     var allScores: [GameScore]?
-
-    /*:
-     It's recommended the developer adds the emptyObject computed property or similar.
-     Gets an empty version of the respective object. This can be used when you only need to update a
-     a subset of the fields of an object as oppose to updating every field of an object. Using an
-     empty object and updating a subset of the fields reduces the amount of data sent between
-     client and server when using `save` and `saveAll` to update objects.
-    */
-    var emptyObject: Self {
-        var object = Self()
-        object.objectId = objectId
-        object.createdAt = createdAt
-        return object
-    }
 }
 
 //: It's recommended to place custom initializers in an extension
@@ -117,10 +103,10 @@ User.login(username: "hello", password: "world") { result in
     Asynchrounously - Performs work on background
     queue and returns to specified callbackQueue.
     If no callbackQueue is specified it returns to main queue.
-    Using `emptyObject` allows you to only send the updated keys to the
+    Using `mutable` allows you to only send the updated keys to the
     parse server as opposed to the whole object.
 */
-var currentUser = User.current?.emptyObject
+var currentUser = User.current?.mutable
 currentUser?.customKey = "myCustom"
 currentUser?.score = GameScore(score: 12)
 currentUser?.targetScore = GameScore(score: 100)
@@ -224,7 +210,7 @@ User.anonymous.login { result in
 }
 
 //: Convert the anonymous user to a real new user.
-var currentUser2 = User.current?.emptyObject
+var currentUser2 = User.current?.mutable
 currentUser2?.username = "bye"
 currentUser2?.password = "world"
 currentUser2?.signup { result in

diff --git a/ParseSwift.playground/Pages/6 - Installation.xcplaygroundpage/Contents.swift b/ParseSwift.playground/Pages/6 - Installation.xcplaygroundpage/Contents.swift
@@ -13,7 +13,7 @@ import ParseSwift
 PlaygroundPage.current.needsIndefiniteExecution = true
 initializeParse()
 
-struct Installation: ParseInstallation {
+struct Installation: ParseInstallation, ParseObjectMutable {
     //: These are required by `ParseObject`.
     var objectId: String?
     var createdAt: Date?
@@ -35,20 +35,6 @@ struct Installation: ParseInstallation {
 
     //: Your custom keys
     var customKey: String?
-
-    /*:
-     It's recommended the developer adds the emptyObject computed property or similar.
-     Gets an empty version of the respective object. This can be used when you only need to update a
-     a subset of the fields of an object as oppose to updating every field of an object. Using an
-     empty object and updating a subset of the fields reduces the amount of data sent between
-     client and server when using `save` and `saveAll` to update objects.
-    */
-    var emptyObject: Self {
-        var object = Self()
-        object.objectId = objectId
-        object.createdAt = createdAt
-        return object
-    }
 }
 
 /*: Save your first `customKey` value to your `ParseInstallation`.
@@ -71,11 +57,11 @@ currentInstallation?.save { results in
 /*: Update your `ParseInstallation` `customKey` value.
     Performs work on background queue and returns to designated on
     designated callbackQueue. If no callbackQueue is specified it
-    returns to main queue. Using `emptyObject` allows you to only
+    returns to main queue. Using `mutable` allows you to only
     send the updated keys to the parse server as opposed to the
     whole object.
  */
-currentInstallation = currentInstallation?.emptyObject
+currentInstallation = currentInstallation?.mutable
 currentInstallation?.customKey = "updatedValue"
 currentInstallation?.save { results in
 

diff --git a/ParseSwift.xcodeproj/project.pbxproj b/ParseSwift.xcodeproj/project.pbxproj
@@ -587,6 +587,10 @@
 		91F346C3269B88F7005727B6 /* ParseCloudViewModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 91F346C2269B88F7005727B6 /* ParseCloudViewModelTests.swift */; };
 		91F346C4269B88F7005727B6 /* ParseCloudViewModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 91F346C2269B88F7005727B6 /* ParseCloudViewModelTests.swift */; };
 		91F346C5269B88F7005727B6 /* ParseCloudViewModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 91F346C2269B88F7005727B6 /* ParseCloudViewModelTests.swift */; };
+		CD106A00272D481800939151 /* ParseObjectMutable.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD1069FF272D481800939151 /* ParseObjectMutable.swift */; };
+		CD106A01272D481800939151 /* ParseObjectMutable.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD1069FF272D481800939151 /* ParseObjectMutable.swift */; };
+		CD106A02272D481800939151 /* ParseObjectMutable.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD1069FF272D481800939151 /* ParseObjectMutable.swift */; };
+		CD106A03272D481800939151 /* ParseObjectMutable.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD1069FF272D481800939151 /* ParseObjectMutable.swift */; };
 		F971F4F624DE381A006CB79B /* ParseEncoderExtraTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = F971F4F524DE381A006CB79B /* ParseEncoderExtraTests.swift */; };
 		F97B45CE24D9C6F200F4A88B /* ParseCoding.swift in Sources */ = {isa = PBXBuildFile; fileRef = F97B45B424D9C6F200F4A88B /* ParseCoding.swift */; };
 		F97B45CF24D9C6F200F4A88B /* ParseCoding.swift in Sources */ = {isa = PBXBuildFile; fileRef = F97B45B424D9C6F200F4A88B /* ParseCoding.swift */; };
@@ -961,6 +965,7 @@
 		91F346B8269B766C005727B6 /* CloudViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CloudViewModel.swift; sourceTree = "<group>"; };
 		91F346BD269B77B5005727B6 /* CloudObservable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CloudObservable.swift; sourceTree = "<group>"; };
 		91F346C2269B88F7005727B6 /* ParseCloudViewModelTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ParseCloudViewModelTests.swift; sourceTree = "<group>"; };
+		CD1069FF272D481800939151 /* ParseObjectMutable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ParseObjectMutable.swift; sourceTree = "<group>"; };
 		F971F4F524DE381A006CB79B /* ParseEncoderExtraTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ParseEncoderExtraTests.swift; sourceTree = "<group>"; };
 		F97B45B424D9C6F200F4A88B /* ParseCoding.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ParseCoding.swift; sourceTree = "<group>"; };
 		F97B45B524D9C6F200F4A88B /* AnyDecodable.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AnyDecodable.swift; sourceTree = "<group>"; };
@@ -1287,6 +1292,7 @@
 				F97B45C824D9C6F200F4A88B /* Queryable.swift */,
 				F97B45C724D9C6F200F4A88B /* Savable.swift */,
 				70647E9B259E3A9A004C1004 /* ParseType.swift */,
+				CD1069FF272D481800939151 /* ParseObjectMutable.swift */,
 				91BB8FCE2690BA70005A6BA5 /* QueryObservable.swift */,
 				91F346BD269B77B5005727B6 /* CloudObservable.swift */,
 			);
@@ -2084,6 +2090,7 @@
 				703B090226BD9652005A112F /* ParseAnalytics+async.swift in Sources */,
 				703B093F26BF47AC005A112F /* ParseApple+async.swift in Sources */,
 				F97B45E624D9C6F200F4A88B /* Query.swift in Sources */,
+				CD106A00272D481800939151 /* ParseObjectMutable.swift in Sources */,
 				703B093526BF43D9005A112F /* ParseAnonymous+async.swift in Sources */,
 				705D950825BE4C08003EF6F8 /* SubscriptionCallback.swift in Sources */,
 				70C5509225B4A99100B5DBC2 /* AddRelation.swift in Sources */,
@@ -2293,6 +2300,7 @@
 				703B090326BD9652005A112F /* ParseAnalytics+async.swift in Sources */,
 				703B094026BF47AC005A112F /* ParseApple+async.swift in Sources */,
 				F97B45E724D9C6F200F4A88B /* Query.swift in Sources */,
+				CD106A01272D481800939151 /* ParseObjectMutable.swift in Sources */,
 				703B093626BF43D9005A112F /* ParseAnonymous+async.swift in Sources */,
 				705D950925BE4C08003EF6F8 /* SubscriptionCallback.swift in Sources */,
 				70C5509325B4A99100B5DBC2 /* AddRelation.swift in Sources */,
@@ -2597,6 +2605,7 @@
 				703B090526BD9652005A112F /* ParseAnalytics+async.swift in Sources */,
 				703B094226BF47AC005A112F /* ParseApple+async.swift in Sources */,
 				F97B466724D9C88600F4A88B /* SecureStorage.swift in Sources */,
+				CD106A03272D481800939151 /* ParseObjectMutable.swift in Sources */,
 				703B093826BF43D9005A112F /* ParseAnonymous+async.swift in Sources */,
 				705D950B25BE4C08003EF6F8 /* SubscriptionCallback.swift in Sources */,
 				70C5509525B4A99100B5DBC2 /* AddRelation.swift in Sources */,
@@ -2720,6 +2729,7 @@
 				703B090426BD9652005A112F /* ParseAnalytics+async.swift in Sources */,
 				703B094126BF47AC005A112F /* ParseApple+async.swift in Sources */,
 				F97B466624D9C88600F4A88B /* SecureStorage.swift in Sources */,
+				CD106A02272D481800939151 /* ParseObjectMutable.swift in Sources */,
 				703B093726BF43D9005A112F /* ParseAnonymous+async.swift in Sources */,
 				705D950A25BE4C08003EF6F8 /* SubscriptionCallback.swift in Sources */,
 				70C5509425B4A99100B5DBC2 /* AddRelation.swift in Sources */,

diff --git a/Sources/ParseSwift/Objects/ParseObject.swift b/Sources/ParseSwift/Objects/ParseObject.swift
@@ -16,19 +16,12 @@ import Foundation
  If you are using value types the the compiler will assist you with conforming to `ParseObject` protocol. If you
  are thinking of using reference types, see the warning.
 
- It's recommended the developer adds the emptyObject computed property or similar.
+ It's recommended the developer conforms to the `ParseObjectMutable` protocol.
  Gets an empty version of the respective object. This can be used when you only need to update a
  a subset of the fields of an object as oppose to updating every field of an object. Using an empty object and updating
  a subset of the fields reduces the amount of data sent between client and server when using `save` and `saveAll`
- to update objects. You should add the following properties in your `ParseObject`'s:
-
-     var emptyObject: Self {
-         var object = Self()
-         object.objectId = objectId
-         object.createdAt = createdAt
-         return object
-     }
-
+ to update objects.
+ 
  - important: It is recommended that all added properties be optional properties so they can eventually be used as
  Parse `Pointer`'s. If a developer really wants to have a required key, they should require it on the server-side or
  create methods to check the respective properties on the client-side before saving objects. See