从cakephp中的多个表中检索数据

Question

i am using cakephp 2.xx. i have two tables in my database names and genders. i write innerjoin to display names with their gender. gender is coming from genders table. my controller is below

class NamesController extends AppController {
public $helpers = array("Html", "Form");
public function index() {
    $this->loadModel("names");
$query_options = array();
$query_options["fields"] = array("names.Name","genders.gender");
$query_options["joins"] = array("table" => "genders", "alias" => "genders", "type" => "INNER", "conditions" => array("genders.id = names.Gender_id",));
$this->set("gender", $this->names->find('all', array($query_options,'limit' => 10 ,'recursive' => 1)));
}
}

names model is

class Names extends AppModel {  
     var $belongsTo = 'Genders';     
}

and genders model is

class Genders extends AppModel {    
    var $hasMany = 'Names';
    }

and ctp code is

foreach ($gender as $post);
echo $post["names"]["Name"];
echo $post["genders"]["gender"];

this print Name fine. but doesn't print gender and result in Undefined index: genders. Please help

Answer 1

My recommendation, you don't have to follow it: Use singular names for models (Name, Gender). This way it will automatically connect with the appropriate table (names, genders) and your models will be loaded automatically in their controllers (NamesController, GendersController). If you don't follow this advice, change the code below accordingly (load the model manually as you did in your question and set $useTable in the model).

Option 1: getting all names containing gender data:

class NamesController extends AppController {

    public function index() {
        $this->Name->Behaviors->load('Containable');
        $query_options = array(
            'fields' => array("Name.name"),
            'contain' => array(
                'Gender' => array(
                    'fields' => array('Gender.gender'),
                ),
            ),
        );
        $this->set("names", $this->Name->find('all', $query_options));
    }
}

Option 2: getting genders containing all names that belong to them:

class NamesController extends AppController {

    public function index() {
        $this->Name->Gender->Behaviors->load('Containable');
        $query_options = array(
            'fields' => array("Gender.gender"),
            'contain' => array(
                'Name' => array(
                    'fields' => array('Name.name'),
                ),
            ),
        );
        $this->set("genders", $this->Name->Gender->find('all', $query_options));
    }
}

Use debug($names) or debug($genders) in your view to see the output array structure.