ActiveRecords functions to work with tabular data input

I don't like idea that before populating data I must have models. It requests loading existing and creating new. So  I wrote some functions (ActiveRecord::populate(), saveMultiple() and findAllByPk()) to make tabular data update very simple.
```php
if ($post->load($_POST) && $post>save()) {
            $populatedTags = PostTag::populate($_POST, array(
                'scenario' => 'create',
                'post_id' => $post->id,
            ), 'update');
                $status = PostTag::saveMultiple($populatedTags);
        }
```
Working example is included basic app site/post, tables structure is in apps\basic\data\example.sql (just noticed that i have left foreign key constraint to users table:) )