Merge pull request yajra#44 from gredimano/add-columns

Add mutated / hidden columns.

Author: yajra

add-columns.md

@@ -0,0 +1,52 @@
+# Add Columns
+
+Add mutated / hidden columns.
+
+<a name="blade"></a>
+## Add hidden model columns
+
+```php
+use DataTables;
+
+Route::get('user-data', function() {
+	$model = App\User::query();
+
+	return DataTables::eloquent($model)
+				->addColumns(['foo','bar','buzz'=>"red"])
+				->toJson();
+});
+```
+
+<a name="response"></a>
+## Example Response
+
+```json
+{
+	"draw": 2,
+	"recordsTotal": 10,
+	"recordsFiltered": 3,
+	"data": [{
+		"id": 476,
+		"name": "Esmeralda Kulas",
+		"email": "abbott.cali@heaney.info",
+		"created_at": "2016-07-31 23:26:14",
+		"updated_at": "2016-07-31 23:26:14",
+		"deleted_at": null,
+		"superior_id": 0,
+		"foo":"value",
+		"bar":"value",
+		"buzz":"red"
+	}, {
+		"id": 6,
+		"name": "Zachery Muller",
+		"email": "abdullah.koelpin@yahoo.com",
+		"created_at": "2016-07-31 23:25:43",
+		"updated_at": "2016-07-31 23:25:43",
+		"deleted_at": null,
+		"superior_id": 1,
+		"foo":"value",
+        "bar":"value",
+        "buzz":"red"
+	}]
+}
+```