Association and model data saving problem

Question

Developing with cakephp 1.3 (latest from github). There are 2 models bind with hasAndBelongsToMany: documents and tags. Document can have many tags in other words. I've add a new document submitting form there user can enter a list of tags separated with commas (new tag will be added, if not exist already). I looked at cakephp bakery 2.0 source code on github and found the solution. But it seems that something is wrong.

class Document extends AppModel {
public $hasAndBelongsToMany = array('Tag');
public function beforeSave($options = array()) {
                if (isset($this->data[$this->alias]['tags']) && !empty($this-
>data[$this->alias]['tags']))

                {
                        $tagIds = $this->Tag->saveDocTags($this->data[$this->alias]
['tags']);
                        unset($this->data[$this->alias]['tags']);
                        $this->data[$this->Tag->alias][$this->Tag->alias] = $tagIds;
                }
                return true;
        }

}

class Tag extends AppModel {
    public $hasAndBelongsToMany = array ('Document');

   public function saveDocTags($commalist = '') {
        if ($commalist == '') return null;
        $tags = explode(',',$commalist);
        if (empty($tags)) return null;
        $existing = $this->find('all', array(
            'conditions' => array('title' => $tags)
        ));
        $return = Set::extract($existing,'/Tag/id');
        if (sizeof($existing) == sizeof($tags)) {
            return $return;
        }
        $existing = Set::extract($existing,'/Tag/title');
        foreach ($tags as $tag) {
            if (!in_array($tag, $existing)) {
                $this->create(array('title' => $tag));
                $this->save();
                $return[] = $this->id;
            }
        }
        return $return;
    }

} 

So, new tags creation works well but document model can't save association data and tells: SQL Error: 1054: Unknown column 'Array' in 'field list' Query: INSERT INTO documents (title, content, shortnfo, date, status) VALUES ('Document with tags', '', '', Array, 1) Any ideas how to solve this problem?

P.S. Post data from firebug for this form: _method POST data[Document][content] test document content data[Document][date][year] 2010 data[Document][shortnfo] short info about document data[Document][status] 1 data[Document][tags] test, categories, list data[Document][title] Test title No arrays as we can see.

Answer 1

Solved! :) The problem was in the view:

'date'=>array('label'=>'Date', 'type'=>'date', 'dateFormat'=>'Y'),

But date field in database. the type of this field is year.