diff --git a/src/com/activeandroid/Model.java b/src/com/activeandroid/Model.java
index 421426ea3..e7f8106ba 100644
--- a/src/com/activeandroid/Model.java
+++ b/src/com/activeandroid/Model.java
@@ -72,6 +72,17 @@ public final void delete() {
 	}
 
 	public final Long save() {
+		if(!validate())
+			return null;
+
+		if(mId==null) {
+			if(!beforeCreate())
+				return null;
+		}
+
+		if(!beforeSave())
+			return null;
+
 		final SQLiteDatabase db = Cache.openDatabase();
 		final ContentValues values = new ContentValues();
 
@@ -153,6 +164,7 @@ else if (ReflectionUtils.isSubclassOf(fieldType, Enum.class)) {
 
 		if (mId == null) {
 			mId = db.insert(mTableInfo.getTableName(), null, values);
+			afterCreate();
 		}
 		else {
 			db.update(mTableInfo.getTableName(), values, idName+"=" + mId, null);
@@ -160,9 +172,18 @@ else if (ReflectionUtils.isSubclassOf(fieldType, Enum.class)) {
 
 		Cache.getContext().getContentResolver()
 				.notifyChange(ContentProvider.createUri(mTableInfo.getType(), mId), null);
+
+		afterSave();
+
 		return mId;
 	}
 
+	public boolean validate() { return true; }
+	public boolean beforeCreate() { return true; }
+	public void afterCreate() {}
+	public boolean beforeSave() { return true; }
+	public void afterSave() {}
+
 	// Convenience methods
 
 	public static void delete(Class<? extends Model> type, long id) {