Re: Database Design Question

On Mon, Jul 5, 2010 at 10:17 AM, duderion <adrian.gier@googlemail.com> wrote:
> Hi Guys
>
> i have a question about cake compatible database design:
>
> i have a table "mails" and a table "users"
>
> my table mail references 2 users from the users-table as Sender,
> Recipient
>
> but then, i have 2 foreign keys in it, and i dont know how to handle
> this properly
> (or even name it correctly)
>
> Anyone having an idea ? Or do i need a third table with the user,user-
>>mail information...

mails table:

id INT(10) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
sender_id INT(10) UNSIGNED NOT NULL,
recipient_id INT(10) UNSIGNED NOT NULL,
FOREIGN KEY (sender_id) REFERENCES users (id) ON DELETE CASCADE,
FOREIGN KEY (recipient_id) REFERENCES users (id) ON DELETE CASCADE

User model:

var $hasMany = array(
'MailSender' => array (
'className' => 'Mail',
'foreignKey' => 'sender_id',
'dependent' => true
),
'MailRecipient' => array (
'className' => 'Mail',
'foreignKey' => 'recipient_id',
'dependent' => true
)
);

Then you can refer to each model by its alias, MailSender or MailRecipient.

Note that this does not take into account the situation where a mail
has two or more recipients.

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