cakephp模型关联中的写条件hasMany和belongsTo

时间:2014-02-25 14:15:55

标签: php cakephp cakephp-2.0 model-associations

这是我的数据库架构。 Database Scheme 在我的员工控制员中,我想展示属于特定部门的员工 如果dept_no被传递或者显示所有员工。

下面是我的选项数组。目前,它显示所有具有员工部门名称的记录。

$options = array('contain' => array(
                   'DeptEmp' => array(
                       'fields' => array('DeptEmp.dept_no')
                    ),
                    'DeptEmp.Department' => array(
                       'fields' => array('Department.dept_name')
                    )
                )
           );

我的员工模型

$hasMany = array(
            'DeptEmp' => array(
              'className' => 'DeptEmp',
              'foreignKey' => 'emp_no',
              'dependent' => false
             )
          );

我的DeptEmp模型

public $belongsTo=array(
                   'Employee'=>array(
                      'className'=>'Employee',
                      'foreignKey'=>'emp_id',
                      'dependent'=>false
                    ),
                    'Department'=>array(
                      'className'=>'Department',
                      'foreignKey'=>'dept_no',
                      'dependent'=>false
                    )
                 );

我的部门模特

public $hasMany = array(
                   'DeptEmp' => array(
                      'className' => 'DeptEmp',
                      'foreignKey' => 'dept_no',
                      'dependent' => false
                    )
                 );

我试过

$this->Employee->DeptEmp->dept_no ='d006'

但它没有任何效果。

如果我做错了事,请指导我,因为我是cakephp的新手。

2 个答案:

答案 0 :(得分:0)

包含遗憾的是,除了hasOne关联之外,不会对任何内容进行连接,而是进行多次查询,因此您对所包含数据执行的任何条件都不会过滤原始模型。

但你可以反过来做:找到DeptEmp为'd006'的dept_no并包含结果中的所有Employee

或者执行联接查找查询,在$options数组中提供字段joinshttp://book.cakephp.org/2.0/en/models/associations-linking-models-together.html#joining-tables

答案 1 :(得分:0)

您需要再次查看实体关系图。经理也是员工。你真的只需要两个主要模型:员工和部门。最好使用id列来标识记录,因为您可能希望更改某个部门的dep_no,该部门需要更新该部门所有员工的dep_no。

员工模型

<?php

class Employee extends AppModel {

    public $name = 'Employee';

/**
 * Model Schema
 *
 * @var array
 * @access protected
 */
    protected $_schema = array(
        'id' => array('type' => 'integer', 'length' => 8, 'key' => 'primary'),
        'first_name' => array('type' => 'string', 'null' => false),
        'last_name' => array('type' => 'string', 'null' => false),
        'birth_date' => array('type' => 'datetime', 'null' => false),
        'gender' => array('type' => 'string', 'null' => false),
        'hire_date' => array('type' => 'datetime', 'null' => false),
        'department_id' => array('type' => 'integer', 'length' => 8),
        'manager_id' => array('type' => 'integer', 'length' => 8),
        'created' => array('type' => 'datetime', 'null' => false),
        'modified' => array('type' => 'datetime', 'null' => true, 'default' => null)
        );

/**
 * Model Associations
 *
 * @var array
 * @access public
 */
    public $belongsTo = array(
        'Department' => array(
            'className'   => 'Department',
            'foreignKey'  => 'department_id',
            'dependent' => true
            ),
        );

部门模型

<?php

class Department extends AppModel {

    public $name = 'Department';

/**
 * Model Schema
 *
 * @var array
 * @access protected
 */
    protected $_schema = array(
        'id' => array('type' => 'integer', 'length' => 8, 'key' => 'primary'),
        'number' => array('type' => 'string', 'length' => 8),
        'name' => array('type' => 'string', 'null' => false),
        'created' => array('type' => 'datetime', 'null' => false),
        'modified' => array('type' => 'datetime', 'null' => true, 'default' => null)
        );

/**
 * Model Associations
 *
 * @var array
 * @access public
 */
    public $hasMany = array(
        'Employee' => array(
            'className'   => 'Employee',
            'foreignKey'  => 'department_id',
            'dependent'   => true
            )
        );
    public $hasOne = array(
        'DepartmentManager' => array(
            'className' => 'Employee',
            'foreignKey'  => 'department_id',
            'conditions' => array('DepartmentManager.manager_id' => null),
            'dependent' => true
        )
    );
}

部门控制员

$data = $this->Department->find('first', array(
    'conditions' => array('Department.number' => 'd006'),
    'contain' => array(
        'DepartmentManager', 'Employee',
        )
    ));

<强>输出

Array
(
    [Department] => Array
        (
            [id] => 1
            [number] => d006
            [name] => Human Resources
            [created] => 2014-02-25 00:00:00
            [modified] =>
        )

    [DepartmentManager] => Array
        (
            [id] => 1
            [first_name] => David
            [last_name] => Scott
            [birth_date] => 2014-02-25
            [gender] => M
            [hire_date] => 2014-02-25
            [department_id] => 1
            [manager_id] => 
            [created] => 2014-02-25 00:00:00
            [modified] => 
        )

    [Employee] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [first_name] => David
                    [last_name] => Scott
                    [birth_date] => 2014-02-25
                    [gender] => M
                    [hire_date] => 2014-02-25
                    [department_id] => 1
                    [manager_id] => 
                    [created] => 2014-02-25 00:00:00
                    [modified] => 
                )

            [1] => Array
                (
                    [id] => 2
                    [first_name] => Joe
                    [last_name] => Bloggs
                    [birth_date] => 2014-02-25
                    [gender] => M
                    [hire_date] => 2014-02-25
                    [department_id] => 1
                    [manager_id] => 1
                    [created] => 2014-02-25 00:00:00
                    [modified] => 
                )

            [2] => Array
                (
                    [id] => 3
                    [first_name] => Jane
                    [last_name] => Bloggs
                    [birth_date] => 2014-02-25
                    [gender] => F
                    [hire_date] => 2014-02-25
                    [department_id] => 1
                    [manager_id] => 1
                    [created] => 2014-02-25 00:00:00
                    [modified] => 
                )

        )

)

希望这有用。