diff --git a/client/js/models/comment.js b/client/js/models/comment.js
index d65e13b..702370c 100644
--- a/client/js/models/comment.js
+++ b/client/js/models/comment.js
@@ -6,14 +6,7 @@ const events = require('../events.js');
 class Comment extends events.EventTarget {
     constructor() {
         super();
-        this._id           = null;
-        this._postId       = null;
-        this._text         = null;
-        this._user         = null;
-        this._creationTime = null;
-        this._lastEditTime = null;
-        this._score        = null;
-        this._ownScore     = null;
+        this._updateFromResponse({});
     }
 
     static create(postId) {
diff --git a/client/js/models/post.js b/client/js/models/post.js
index fb60683..b0d2a47 100644
--- a/client/js/models/post.js
+++ b/client/js/models/post.js
@@ -9,30 +9,8 @@ const misc = require('../util/misc.js');
 class Post extends events.EventTarget {
     constructor() {
         super();
-        this._orig          = {};
-
-        this._id            = null;
-        this._type          = null;
-        this._mimeType      = null;
-        this._creationTime  = null;
-        this._user          = null;
-        this._safety        = null;
-        this._contentUrl    = null;
-        this._thumbnailUrl  = null;
-        this._canvasWidth   = null;
-        this._canvasHeight  = null;
-        this._fileSize      = null;
-
-        this._flags         = [];
-        this._tags          = [];
-        this._notes         = [];
-        this._comments      = [];
-        this._relations     = [];
-
-        this._score         = null;
-        this._favoriteCount = null;
-        this._ownScore      = null;
-        this._ownFavorite   = null;
+        this._orig = {};
+        this._updateFromResponse({});
     }
 
     get id()             { return this._id; }
diff --git a/client/js/models/tag.js b/client/js/models/tag.js
index 32db964..c07f495 100644
--- a/client/js/models/tag.js
+++ b/client/js/models/tag.js
@@ -7,19 +7,8 @@ const misc = require('../util/misc.js');
 class Tag extends events.EventTarget {
     constructor() {
         super();
-        this._orig         = {};
-
-        this._origName     = null;
-        this._category     = null;
-        this._description  = null;
-
-        this._names        = [];
-        this._suggestions  = [];
-        this._implications = [];
-
-        this._postCount    = null;
-        this._creationTime = null;
-        this._lastEditTime = null;
+        this._orig = {};
+        this._updateFromResponse({});
     }
 
     get names()             { return this._names; }
diff --git a/client/js/models/user.js b/client/js/models/user.js
index 4ebcac0..0b45866 100644
--- a/client/js/models/user.js
+++ b/client/js/models/user.js
@@ -6,26 +6,7 @@ const events = require('../events.js');
 class User extends events.EventTarget {
     constructor() {
         super();
-        this._name              = null;
-        this._rank              = null;
-        this._email             = null;
-        this._avatarStyle       = null;
-        this._avatarUrl         = null;
-        this._creationTime      = null;
-        this._lastLoginTime     = null;
-        this._commentCount      = null;
-        this._favoritePostCount = null;
-        this._uploadedPostCount = null;
-        this._likedPostCount    = null;
-        this._dislikedPostCount = null;
-
-        this._origName          = null;
-        this._origEmail         = null;
-        this._origRank          = null;
-        this._origAvatarStyle   = null;
-
-        this._password          = null;
-        this._avatarContent     = null;
+        this._updateFromResponse({});
     }
 
     get name()               { return this._name; }