CakePHP基于hasMany关系在array()中获取匹配项

时间:2011-05-25 00:36:55

标签: php mysql cakephp

PlanDetails有很多公司。 PlanDetail表有company_id字段。

这就是我需要实现的目标:PlanDetail.company_id = Company.id。因此,请获取PlanDetail.company_id与Company.id匹配的所有计划详细信息。

这是我在plan_details_controller中一直搞乱的查询:

function pd_list_by_company() {
    $this->PlanDetail->unbindModel(array('hasMany' => array('Plan')));
    $comp_id = $this->PlanDetail->Company->find('all');
    $result = $this->PlanDetails->find('all', array('conditions' => array
('Company.id' => 'PlanDetail.company_id')));
    $company_id = $this->PlanDetail->read('company_id');
    }

我不能只得到我需要的结果..我在这里做错了什么?

2 个答案:

答案 0 :(得分:2)

company_id字段来说,这听起来像一个简单的条件:

$this->PlanDetail->find('all', array('conditions' => array('company_id' => $company_id)))

或者,如果您也想要公司,并且您的关联正确连接:

$company = $this->Company->read(null, $company_id);

// echo $company['Company']
// echo $company['PlanDetail'][0], $company['PlanDetail'][1] etc...

您需要从某个地方获取$company_id来查询,通常是网址:

public function pd_list_by_company($company_id)

然后使用网址/plan_details/pd_list_by_company/42访问此操作,该网址可以链接到使用$this->Html->link('foobar', array('controller' => 'plan_details', 'action' => 'pd_list_by_company', 42))

完整示例:

public function view($planId) {
    $plan = $this->PlanDetail->read(null, $planId);
    if (!$plan) {
       $this->cakeError('error404');
    }
    $otherPlansBySameCompany = $this->PlanDetail->find('all', array(
        'conditions' => array('company_id' => $plan['PlanDetail']['company_id'])
    ));
    $this->set(compact('plan', 'otherPlansBySameCompany'));
}

答案 1 :(得分:0)

我在Plan Detail view.ctp。

中显示set()查找结果

这就是我解决它的方法:

    function view($id = null) {
    if (!$id) {
        $this->Session->setFlash(__('Invalid plan detail', true));
        $this->redirect(array('action' => 'index'));
    }
    $this->set('planDetail', $this->PlanDetail->read(null, $id));
        $cid = $this->PlanDetail->read('Company.id');
        $cid_extract = Set::extract($cid, 'Company.id');
    $this->set('planComps', $this->PlanDetail->find('all',array('conditions' => array("company_id" => $cid_extract))));
}