HasOne.php
6.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace think\model\relation;
use think\db\Query;
use think\Loader;
use think\Model;
class HasOne extends OneToOne
{
/**
* 构造函数
* @access public
* @param Model $parent 上级模型对象
* @param string $model 模型名
* @param string $foreignKey 关联外键
* @param string $localKey 当前模型主键
* @param string $joinType JOIN类型
*/
public function __construct(Model $parent, $model, $foreignKey, $localKey, $joinType = 'INNER')
{
$this->parent = $parent;
$this->model = $model;
$this->foreignKey = $foreignKey;
$this->localKey = $localKey;
$this->joinType = $joinType;
$this->query = (new $model)->db();
}
/**
* 延迟获取关联数据
* @param string $subRelation 子关联名
* @param \Closure $closure 闭包查询条件
* @return array|false|\PDOStatement|string|Model
*/
public function getRelation($subRelation = '', $closure = null)
{
// 执行关联定义方法
$localKey = $this->localKey;
if ($closure) {
call_user_func_array($closure, [ & $this->query]);
}
// 判断关联类型执行查询
$relationModel = $this->query->where($this->foreignKey, $this->parent->$localKey)->relation($subRelation)->find();
if ($relationModel) {
$relationModel->setParent(clone $this->parent);
}
return $relationModel;
}
/**
* 根据关联条件查询当前模型
* @access public
* @return Query
*/
public function has()
{
$table = $this->query->getTable();
$model = basename(str_replace('\\', '/', get_class($this->parent)));
$relation = basename(str_replace('\\', '/', $this->model));
$localKey = $this->localKey;
$foreignKey = $this->foreignKey;
return $this->parent->db()
->alias($model)
->whereExists(function ($query) use ($table, $model, $relation, $localKey, $foreignKey) {
$query->table([$table => $relation])->field($relation . '.' . $foreignKey)->whereExp($model . '.' . $localKey, '=' . $relatoin . '.' . $foreignKey);
});
}
/**
* 根据关联条件查询当前模型
* @access public
* @param mixed $where 查询条件（数组或者闭包）
* @return Query
*/
public function hasWhere($where = [])
{
$table = $this->query->getTable();
$model = basename(str_replace('\\', '/', get_class($this->parent)));
$relation = basename(str_replace('\\', '/', $this->model));
if (is_array($where)) {
foreach ($where as $key => $val) {
if (false === strpos($key, '.')) {
$where[$relation . '.' . $key] = $val;
unset($where[$key]);
}
}
}
return $this->parent->db()->alias($model)
->field($model . '.*')
->join($table . ' ' . $relation, $model . '.' . $this->localKey . '=' . $relation . '.' . $this->foreignKey, $this->joinType)
->where($where);
}
/**
* 预载入关联查询（数据集）
* @access public
* @param array $resultSet 数据集
* @param string $relation 当前关联名
* @param string $subRelation 子关联名
* @param \Closure $closure 闭包
* @return void
*/
protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure)
{
$localKey = $this->localKey;
$foreignKey = $this->foreignKey;
$range = [];
foreach ($resultSet as $result) {
// 获取关联外键列表
if (isset($result->$localKey)) {
$range[] = $result->$localKey;
}
}
if (!empty($range)) {
$data = $this->eagerlyWhere($this, [
$foreignKey => [
'in',
$range,
],
], $foreignKey, $relation, $subRelation, $closure);
// 关联属性名
$attr = Loader::parseName($relation);
// 关联数据封装
foreach ($resultSet as $result) {
// 关联模型
if (!isset($data[$result->$localKey])) {
$relationModel = null;
} else {
$relationModel = $data[$result->$localKey];
$relationModel->setParent(clone $result);
$relationModel->isUpdate(true);
}
if (!empty($this->bindAttr)) {
// 绑定关联属性
$this->bindAttr($relationModel, $result, $this->bindAttr);
}
// 设置关联属性
$result->setRelation($attr, $relationModel);
}
}
}
/**
* 预载入关联查询（数据）
* @access public
* @param Model $result 数据对象
* @param string $relation 当前关联名
* @param string $subRelation 子关联名
* @param \Closure $closure 闭包
* @return void
*/
protected function eagerlyOne(&$result, $relation, $subRelation, $closure)
{
$localKey = $this->localKey;
$foreignKey = $this->foreignKey;
$data = $this->eagerlyWhere($this, [$foreignKey => $result->$localKey], $foreignKey, $relation, $subRelation, $closure);
// 关联模型
if (!isset($data[$result->$localKey])) {
$relationModel = null;
} else {
$relationModel = $data[$result->$localKey];
$relationModel->setParent(clone $result);
$relationModel->isUpdate(true);
}
if (!empty($this->bindAttr)) {
// 绑定关联属性
$this->bindAttr($relationModel, $result, $this->bindAttr);
}
$result->setRelation(Loader::parseName($relation), $relationModel);
}
}