Conditions in association do not work with "hash" syntax

[koenpunt]

Currently, conditions in an association have to be SQL formatted, and the "hash" array syntax doesn't work.

$has_many = [
    ['available_agencies',
        'class_name' => 'Agency',
        'foreign_key' => 'category_id',
        // 'conditions' => ['enabled' => true] // doesn't work
        'conditions' => ['enabled = ?', true]  // works
    ]
];