getRelation()
getRelation(array $subRelation = [], \Closure $closure = null) : \think\Collection
延迟获取关联数据
Parameters
| array | $subRelation | 子关联 |
| \Closure | $closure | 闭包查询条件 |
模型关联接口
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);
namespace think\contract;
use Closure;
use think\Collection;
use think\db\Query;
use think\Model;
/**
* 模型关联接口
*/
interface ModelRelationInterface
{
/**
* 延迟获取关联数据
* @access public
* @param array $subRelation 子关联
* @param Closure $closure 闭包查询条件
* @return Collection
*/
public function getRelation(array $subRelation = [], Closure $closure = null): Collection;
/**
* 预载入关联查询
* @access public
* @param array $resultSet 数据集
* @param string $relation 当前关联名
* @param array $subRelation 子关联名
* @param Closure $closure 闭包条件
* @return void
*/
public function eagerlyResultSet(array &$resultSet, string $relation, array $subRelation, Closure $closure = null): void;
/**
* 预载入关联查询
* @access public
* @param Model $result 数据对象
* @param string $relation 当前关联名
* @param array $subRelation 子关联名
* @param Closure $closure 闭包条件
* @return void
*/
public function eagerlyResult(Model $result, string $relation, array $subRelation = [], Closure $closure = null): void;
/**
* 关联统计
* @access public
* @param Model $result 模型对象
* @param Closure $closure 闭包
* @param string $aggregate 聚合查询方法
* @param string $field 字段
* @param string $name 统计字段别名
* @return integer
*/
public function relationCount(Model $result, Closure $closure, string $aggregate = 'count', string $field = '*', string &$name = null);
/**
* 创建关联统计子查询
* @access public
* @param Closure $closure 闭包
* @param string $aggregate 聚合查询方法
* @param string $field 字段
* @param string $name 统计字段别名
* @return string
*/
public function getRelationCountQuery(Closure $closure = null, string $aggregate = 'count', string $field = '*', string &$name = null): string;
/**
* 根据关联条件查询当前模型
* @access public
* @param string $operator 比较操作符
* @param integer $count 个数
* @param string $id 关联表的统计字段
* @param string $joinType JOIN类型
* @return Query
*/
public function has(string $operator = '>=', int $count = 1, string $id = '*', string $joinType = 'INNER'): Query;
/**
* 根据关联条件查询当前模型
* @access public
* @param mixed $where 查询条件（数组或者闭包）
* @param mixed $fields 字段
* @param string $joinType JOIN类型
* @return Query
*/
public function hasWhere($where = [], $fields = null, string $joinType = ''): Query;
}