Question

我有一个应用程序从下拉列表中获取值并使用它来过滤索引视图。以下是控制器代码：

public function browse() {
    $this->loadModel('ReqMissionId'); 
    $missions = $this->ReqMissionId->find('list', array('fields' => array('mission_id', 'mission_id')));
    $this->set(compact('missions'));
}

这是索引的控制器代码：

public function index() {
    if($this->request->is('post')) {
        $options = array('Requirement.mission_id' => $this->request->data['Requirement']['mission_id']);
        $this->set('mission_id', $this->request->data['Requirement']['mission_id']); //Used to display the mission_id on the index page.
        $this->Paginator->settings = $this->paginate;
        $this->set('requirements', $this->Paginator->paginate('Requirement', $options));    
    }
}

View中的下拉菜单很简单：

    <?php
    echo $this->Form->input('mission_id', array('label' => 'Mission ID'));
    echo $this->Form->submit(__('View'));
    echo $this->Form->end();
    ?>

我的问题是分页。由于Cake在对列进行排序时进行回发，因此'Requirement.mission_id'的值丢失，我得到“调用成员函数sort（）on null”错误。我觉得我可以使用会话变量处理这个问题，但我不清楚实现。这是正确的，还是我应该做的其他事情？

Answer 1

检查您正在分页的模型的会话。尝试这样的事情：

尝试这样的事情：

if(!empty($this->request->data['Requirement']))
    $this->Session->write('Requirement', $this->request->data['Requirement']);
else
    $this->request->data['Requirement'] = $this->Session->read('Requirement');

将其纳入您的$选项。尝试使用这样的数组合并：

$options = array_merge($options, $this->getOptions($this->request->data));

在以下位置实施getOptions：

function getOptions($data = null){
            $options = array();

            if(!empty($data['Requirement']['mission_id']))
                $options = array_merge($options, array('mission_id' => $data['Requirement']['mission_id']));

            return $options;
    }

CakePHP：来自$ this-＆gt; request-＆gt;值的数据在分页回发时丢失

1 个答案: