Update method in database accepts multiple primary keys now. Fixes #865

system/Model.php

@@ -635,6 +635,11 @@ class Model
 	{
 		$escape = null;
 
+		if (is_numeric($id))
+		{
+			$id = [$id];
+		}
+
 		if (empty($data))
 		{
 			$data   = $this->tempData['data'] ?? null;
@@ -692,7 +697,7 @@ class Model
 
 		if ($id)
 		{
-			$builder = $builder->where($this->table.'.'.$this->primaryKey, $id);
+			$builder = $builder->whereIn($this->table.'.'.$this->primaryKey, $id);
 		}
 
 		// Must use the set() method to ensure objects get converted to arrays

tests/system/Database/Live/ModelTest.php

@@ -615,4 +615,22 @@ class ModelTest extends CIDatabaseTestCase
 			'name' => 'Fred Flintstone'
 		]);
 	}
+
+	public function testUpdateArray()
+	{
+		$model = new EventModel();
+
+		$data = [
+			'name'  => 	'Foo',
+			'email' => 'foo@example.com',
+			'country' => 'US',
+			'deleted' => 0
+		];
+
+		$id = $model->insert($data);
+		$model->update([1,2], ['name' => 'Foo Bar']);
+
+		$this->seeInDatabase('user', ['id' => 1, 'name' => 'Foo Bar']);
+		$this->seeInDatabase('user', ['id' => 2, 'name' => 'Foo Bar']);
+	}
 }

user_guide_src/source/database/model.rst

@@ -273,6 +273,22 @@ of the columns in $table, while the array's values are the values to save for th
 
 	$userModel->update($id, $data);
 
+Multiple records may be updated with a single call by passing an array of primary keys as the first parameter::
+
+    $data = [
+		'active' => 1
+	];
+
+	$userModel->update([1, 2, 3], $data);
+
+When you need a more flexible solution, you can leaven the parameters empty and it functions like the Query Builder's
+update command, with the added benefit of validation, events, etc::
+
+    $userModel
+        ->whereIn('id', [1,2,3])
+        ->set(['active' => 1]
+        ->update();
+
 **save()**
 
 This is a wrapper around the insert() and update() methods that handles inserting or updating the record