Question

Please help with model associations.
Schema looks like:

translation_typeofs.typeof_id is typeof_[name] foreign key

translation_typeofs.typeof_type content part of name of relation table (days, colours, buildings or rooms).

TypeofDays model:

class TypeofDay extends AppModel {
    public $name = 'TypeofDay';

    public $hasMany = array(
        'GalleriesTypeofDay' => array(
            'className'  => 'GalleriesTypeofDay',
            'dependent' => true
        ),
        'TranslationTypeof' => array(
            'className'  => 'TranslationTypeof',
            'conditions' => array('TranslationTypeof.typeof_type' => 'days'),
            'dependent' => true
        )
    );
}

TranslationTypeof model:

class TranslationTypeof extends AppModel {
    public $name = 'TranslationTypeof';

    public $belongsTo = array(
        'Language' => array(
            'className'    => 'Language',
            'foreignKey' => 'language_id',
        ),
        'TypeofBuilding' => array(
            'className'  => 'TypeofBuilding',
            'foreignKey' => 'typeof_id',
            'conditions' => array('TranslationTypeof.typeof_type' => 'buildings')
        ),
        'TypeofColour' => array(
            'className'  => 'TypeofColour',
            'foreignKey' => 'typeof_id',
            'conditions' => array('TranslationTypeof.typeof_type' => 'colours')
        ),
        'TypeofRoom' => array(
            'className'  => 'TypeofRoom',
            'foreignKey' => 'typeof_id',
            'conditions' => array('TranslationTypeof.typeof_type' => 'rooms')
        ),
        'TypeofDay' => array(
            'className'  => 'TypeofDay',
            'foreignKey' => 'typeof_id',
            'conditions' => array('TranslationTypeof.typeof_type' => 'days')
        )
    );
}

When I try to save data

$this->TranslationTypeof->saveAll(array(
    'typeof_type'   => $this->data['type_name'],
    'typeof_id'     => $this->data['type_id'],
    'language_id'   => $languageId,
    'text'          => $translation
));

I’m getting error 500 (Internal Server Error)

Error log:

Error: [PDOException] SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (schema.translation_typeofs, CONSTRAINT translation_typeofs_typeof_buildings_fkid1 FOREIGN KEY (typeof_id) REFERENCES typeof_buildings (id) ON DELETE NO ACTION ON UPDATE NO ACTION)

I’m think that it’s something with model association, but can’t find the solution.

Answer 1

As typeof_id is acting as a foreign key depending on the typeof_type provided to it. So there should not be any database foreignKey constraint can be applicable.

So what you can do is: “Delete the foreignKey constraint from the database using PhpMyAdmin and lets handle it with CakePHP”. Kindly ask if it not worked for you.