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2012-08-09T10:40:59.527
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2012-08-09T10:40:59.527
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I guess I got it working at least for hierarchial Model structure. This is how it was done: <pre><code>class Model_Object extends hierarchy\Model_Hierarchy { public $table = 'object'; function init(){ parent::init(); $this->debug(); // for debugging $this->addField('name'); $this->addHook('beforeDelete',$this); } function beforeDelete($m) { // === This is how you can throw exception if there is at least one child record === // if($m->ref('Object')->count()->getOne()) throw $this->exception('Have child records!'); // === This is how you can delete child records, but use this only if you're sure that there are no child/child records === // $m->ref('Object')->deleteAll(); // === This is how you can delete all child records including child/child records (hierarcialy) === // Should use loop if we're not sure if there will be child/child records // We have to use newInstance, otherwise we travel away from $m and can't "get back to parent" when needed $c = $m->newInstance()->load($m->id)->ref('Object'); // maybe $c = $m->newInstance()->loadBy('parent_id',$m->id); will work too? foreach($c as $junk){ $c->delete(); } return $this; } } </code></pre> Important things here are: * extend hierarchy\Model_Hierarchy class not Model_Table * use appropriate method in beforeDelete hook * * restrict delete if we have children - throw exception * * deleteAll - use it when you're sure that there will be no child/child records * * newInstance + loop + delete - use it when you have to delete records (even child/child/...) hierarchialy Maybe some of you have a better solution?
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1. POHow to delete child/child records in atk4?
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1. POHow to delete child/child records in atk4?
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1. COFraid i'm still on 4.1 so not able to add anything. Possibly a bug in 4.2 that it doesnt cascade the deletes but Romans should be able to verify.
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 USTrevor North

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