Well, nothing's being deleted in those queries, only SELECTed.
Of the top of my head I'd say there are two possibilities:

1) Some really weird problem with your database engine that causes it  
to forget selected data. *
2) There's some logic in your application that deletes entries which  
is accidentally triggered.
*unlikely

What you usually do to select related model data is just this:
- You define your two models very simply, as in 
http://book.cakephp.org/view/66/models#introduction-67
- You set up associations between your two models as in 
http://book.cakephp.org/view/66/models#associations-78
- In your controller you do something like $this->User->find(), which  
returns an array like:

Array
(
     [User] => Array
         (
             ...
         )
     [Conversation] => Array
         (
             ...
         )
)

If you want to search for a specific entry in "Conversation" you'd do  
something like this:
$this->User->Conversation->find(array('topic' => 'How to bake  
cookies'));

If your code is anymore complicated than that you're probably not  
doing it right.
If you paste some more of your code (relevant controller actions,  
model definitions etc.) into the bin (http://bin.cakephp.org/) we  
might be able to tell where the problem is.

On 19 May 2008, at 16:35, oana wrote:

>
> These are the queries related concerning users, conversations, and the
> join table.
>
> If it isn't too much trouble, maybe you can point me to a complete
> piece of code  for the users cotroller, to select a certain user's
> conversations. Because i have tried several, and i think this is my
> problem.
>
> Thanks for helping,
> Oana
>
> SELECT `Conversation`.`id`, `Conversation`.`availability`,
> `Conversation`.`created`, `Conversation`.`modified`,
> `Conversation`.`description`, `Conversation`.`title`,
> `Conversation`.`postscount`, `Conversation`.`ideascount`,
> `ConversationsUser`.`conversation_id`, `ConversationsUser`.`user_id`
> FROM `conversations` AS `Conversation` JOIN `conversations_users` AS
> `ConversationsUser` ON (`ConversationsUser`.`user_id` IN (1) AND
> `ConversationsUser`.`conversation_id` = `Conversation`.`id`)
>
> SELECT COUNT(*) AS `count` FROM `conversations_users` AS
> `ConversationsUser` LEFT JOIN `conversations` AS `Conversation` ON
> (`ConversationsUser`.`conversation_id` = `Conversation`.`id`) LEFT
> JOIN `users` AS `User` ON (`ConversationsUser`.`user_id` =
> `User`.`id`) WHERE `User`.`id` = 1
>
> SELECT `ConversationsUser`.`conversation_id`,
> `ConversationsUser`.`user_id`, `Conversation`.`id`,
> `Conversation`.`availability`, `Conversation`.`created`,
> `Conversation`.`modified`, `Conversation`.`description`,
> `Conversation`.`title`, `Conversation`.`postscount`,
> `Conversation`.`ideascount`, `User`.`id`, `User`.`username`,
> `User`.`email`, `User`.`password`, `User`.`group`,
> `User`.`first_name`, `User`.`last_name` FROM `conversations_users` AS
> `ConversationsUser` LEFT JOIN `conversations` AS `Conversation` ON
> (`ConversationsUser`.`conversation_id` = `Conversation`.`id`) LEFT
> JOIN `users` AS `User` ON (`ConversationsUser`.`user_id` =
> `User`.`id`) WHERE `User`.`id` = 1 LIMIT 20
>
> On May 18, 11:53 am, David Christopher Zentgraf <[EMAIL PROTECTED]>
> wrote:
>> Can you post the SQL queries generated by Cake?
>> Sounds really weird.
>>
>> On 18 May 2008, at 16:04, oana wrote:
>>
>>
>>
>>> Hi Keith,
>>
>>> Your summary is very accurate, that is exactly what's happening.
>>
>>> This is how i select the conversations for an user, in the user
>>> controller:
>>
>>> $this->set('conversations',$this->paginate('ConversationsUser',
>>> array('User.id' => $userId)));
>>
>>> Thank you for replying.
>>
>>> On May 18, 6:48 am, Keith <[EMAIL PROTECTED]> wrote:
>>>> Hi Oana,
>>
>>>> Can you post some code?
>>
>>>> What do you mean by "extract?"
>>
>>>> It sounds like you've got your HABTM working properly, but when you
>>>> try to create a view that shows conversations for a specific user  
>>>> the
>>>> join table rows associated with that user are deleted.  Is this an
>>>> accurate summary of your problem?
>>
>>>> On May 17, 4:34 am, oana <[EMAIL PROTECTED]> wrote:
>>
>>>>> I know it has been posted a lor about this topic...but i can't
>>>>> figure
>>>>> it out. Maybe someone with some experience in cake may help me,
>>>>> because i am a newbie.
>>
>>>>> I have 2 classes, Users and Conversations, between them it's habtm
>>>>> relationship, and i have the join table ConversationsUser.
>>
>>>>> In the Users controller i have a function which extracts all the
>>>>> conversations of an user give by it's id. Whenever i try to do  
>>>>> this,
>>>>> the fields in the join table are deleted.
>>
>>>>> Can anyone please help me? I didn't post this right away, i  
>>>>> tried a
>>>>> lot to make it work, but i think it's something big i am missing.
>>
>>>>> Thanks,
>>>>> Oana
> >


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"CakePHP" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 
http://groups.google.com/group/cake-php?hl=en
-~----------~----~----~----~------~----~------~--~---

Reply via email to