学说级联删除查询？

Question

I am using following query to delete countries in my database but it is giving foreign key error because countries has one to many relationship with cities.

I am using following query :

$cd = 1;
Doctrine_Core::getTable('country')->find($cd)->delete();

this query soft deletes if countries doesn't have any child but gives error if countries have any city.

I have also done following settings in country model:

$this->hasMany('city', array(
'local' => 'id',
'foreign' => 'country_id',
'cascade' => 'delete'
));

Please suggest.

Answer 1

In BaseCity.php you should have a relation to Country. In:

$this->hasOne('Country', array(
...

add this line:

"onDelete"=>"CASCADE"

When you delete country, cities will be deleted too. If you want to keep them, put

"onDelete"=>"SET NULL"

Answer 2

I think above way is also correct but I solved it in following way.

I made relation of country to city like this :

$this->hasMany('city', array(
     'local' => 'id',
     'foreign' => 'country_id',
    'cascade' => array(
     0 => 'delete',
     )));

In YAML file I added like this : cascade: [delete]

and it worked.