find() conditions using hasMany relationship

Hello!

I would like to know the best way to accomplish this task in this
framework.

CakePHP 1.3, MySQL

Company(id, name)
FormerExecutive(id, name, company_id)

Company hasMany FormerExecutive
FormerExecutive belongsTo Company

Now I am building a search action in CompanyController:

function search() {

// check if submitted search params
if ($this->data['Company']) {

// parse keywords param
if ($keywords = $this->data['Company']['keywords']) {

$conditions['OR'] = array(
'Company.name LIKE' =>
"%$keywords%",
// this line is errorneous:
'FormerExecutive.name LIKE' =>
"%$keywords%",
);

}

// other params
// .......

// query & send to view
$this->set('companies', $this->Company->find('list',
compact('conditions')));

}

}

How to make hasMany find() conditions properly?
Should I force join or use bindModel or a better way?

Side question 1: why Google indexes Cookbook 1.2 Collection, but not
1.3?
Side question 2: why CakePHP use '' for empty VARCHAR instead of NULL
and then NULL for empty INT?
Side question 3: is it planned to support MySQL YEAR?
Side question 4: is it better to use $order in Model or find()
$params['order']?

Ok, I have more questions, but that's for now.

Thank you for the answers. I really appreciate your time.

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