CakePHP - Why does Model::save cause() an INSERT instead of an UPDATE?

Question

I want to update database in CAKEPHP\'s Way this is my controller

$data = array(
\'KnowledgeBase\' => array(
\'kb_title\' => $this->data[\'Knowledge         


        

Answer 1

You do not supply a primary key value, that's why.

No matter what your primary key is named (Model::$primaryKey), on the model object you have to use the id property (Model::$id) if you want to set the primary key value.

$this->KnowledgeBase->id = $this->data['KnowledgeBase']['id_kb'];

Internally the model maps this to the appropriate primary key field.

In the data however you'd use the actual primary key name:

'id_kb' => $this->data['KnowledgeBase']['id_kb']

btw, I'm not sure why you are (re)building the data array, but if it's to make sure that only specific fields are saved, then you could use the fieldList option instead:

$this->data['KnowledgeBase']['kb_last_update'] = date('Y-m-d G:i:s');

$options = array(
    'fieldList' => array(
        'kb_title',
        'kb_content',
        'kb_last_update',
        'kb_segment'
    )
);

$this->KnowledgeBase->save($this->data, $options);