在cakephp中基于另一个表获取一个表的条目

Question

I have two tables ,

moods and votes,

votes contains votes for each mood added using parameter vote.moodId

I am trying to get specific types of moods added on which i have voted. I am using cake php

$conditions = array(
                'Mood.userId'=>$userId,
                                'Mood.moodType'=>MOOD_IT
                );

            $moods = $this->Mood->find('all', array('conditions'=>$conditions,
            'fields' => $this->mood_fields_it,
            'order' => array('Mood.created DESC'),
                        'limit' => 20,
                        'offset' => $offset * 20
            ));

For now this is getting all moods added in database using my userId, instead how can i get the moods on which i have voted not that have userId = myUserid?

Answer 1

Your Mood.php model should have

public $hasMany = array(
    'Vote' => array(
        'className' => 'Vote',
        'foreignKey' => 'mood_id'
    )
);

In your votes table make sure you add a column mood_id (integer). This binds the Votes to the Moods. To filter based on related models you can use Containable. Add the following to your AppModel.php:

public $actsAs = array('Containable');

Then your find should look like this:

$conditions = array(
                'Mood.userId !='=>$userId, // all Moods that not yours
                 'Mood.moodType'=>MOOD_IT
              );

$moods = $this->Mood->find('all', 
                            array(
                                'conditions'=>$conditions,
                                'contain' => array('Vote' => array(
                                                              'conditions'  =>  array('Vote.userId' =>  $userId) // find your votes
                                                             )
                                                    ),
                                'fields' => $this->mood_fields_it,
                                'order' => array('Mood.created DESC'),
                                'limit' => 20,
                                'offset' => $offset * 20
                            ));