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这是我的模型关系：

expenseClaim hasMany expenses
expenses HABTM expenseCodes
expenseCodes HABTM expenses

在我的 costsClaim edit() 函数中，我将所有相关的费用（每行一个）拉入一个表单中，以便用户可以编辑。

在每一行（费用）上，我都有一个下拉菜单，因此他们可以选择费用代码（与费用声明 add() 函数相同）。

但是，在编辑视图中，用户先前选择的费用代码尚未从数据库中填充...

我怎样才能将费用索赔、费用和昂贵的代码都拉到同一页面中？

我试过了：

$this->ExpenseClaim->recursive = 2;

没有成功。

费用索赔模型：

    <?php
App::uses('AppModel', 'Model');
/**
 * ExpenseClaim Model
 *
 * @property User $User
 * @property ClaimStatus $ClaimStatus
 * @property Expense $Expense
 */
class ExpenseClaim extends AppModel {

/**
 * Display field
 *
 * @var string
 */
    public $displayField = 'id';

/**
 * Model validation
 *
 */

    public $validate = array(
        'user_id' => array(
            'notempty' => array(
                'rule' => array('notempty'),
                'message' => 'Error - the user_id is missing',
            ),
        ),
        'approved' => array(
            'boolean' => array(
                'rule' => array('boolean'),
                'message' => 'Error - approved should be boolean',
            ),
        ),
        'date_submitted' => array(
            'datetime' => array(
                'rule' => array('datetime'),
                'message' => 'Error - date submitted cannot be blank',
            ),
        ),
    );


    //The Associations below have been created with all possible keys, those that are not needed can be removed

/**
 * belongsTo associations
 *
 * @var array
 */
    public $belongsTo = array(
        'User' => array(
            'className' => 'User',
            'foreignKey' => 'user_id',
            'conditions' => '',
            'fields' => '',
            'order' => ''
        ),
        'ClaimStatus' => array(
            'className' => 'ClaimStatus',
            'foreignKey' => 'claim_status_id',
            'conditions' => '',
            'fields' => '',
            'order' => ''
        )
    );

/**
 * hasMany associations
 *
 * @var array
 */
    public $hasMany = array(
        'Expense' => array(
            'className' => 'Expense',
            'foreignKey' => 'expense_claim_id',
            'dependent' => false,
            'conditions' => '',
            'fields' => '',
            'order' => '',
            'limit' => '',
            'offset' => '',
            'exclusive' => '',
            'finderQuery' => '',
            'counterQuery' => ''
        )
    );

}
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