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关联查询支持远程一对多关联 Query类view方法的field参数支持传入true

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thinkphp
2016-05-25 17:57:50 +08:00
parent 62b01bf566
commit e890d43d55
3 changed files with 92 additions and 16 deletions
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62
library/think/model/Relation.php
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@@ -21,9 +21,11 @@ class Relation
{
const HAS_ONE = 1;
const HAS_MANY = 2;
const HAS_MANY_THROUGH= 5;
const BELONGS_TO = 3;
const BELONGS_TO_MANY = 4;
// 父模型对象
protected $parent;
/** @var Model 当前关联的模型类 */
@@ -32,9 +34,11 @@ class Relation
protected $middle;
// 当前关联类型
protected $type;
// 关联外键
// 关联表外键
protected $foreignKey;
// 关联键
// 中间关联表外键
protected $throughKey;
// 关联表主键
protected $localKey;
// 数据表别名
protected $alias;
@@ -85,7 +89,10 @@ class Relation
$result = $relation->where($localKey, $this->parent->$foreignKey)->find();
break;
case self::HAS_MANY:
$result = $relation->where($foreignKey, $this->parent->$localKey)->select();
$result = $relation->select();
break;
case self::HAS_MANY_THROUGH:
$result = $relation->select();
break;
case self::BELONGS_TO_MANY:
// 关联查询
@@ -451,6 +458,32 @@ class Relation
return $this;
}
/**
* HAS MANY 远程关联定义
* @access public
* @param string $model 模型名
* @param string $through 中间模型名
* @param string $firstkey 关联外键
* @param string $secondKey 关联外键
* @param string $localKey 关联主键
* @param array $alias 别名定义
* @return $this
*/
public function hasManyThrough($model, $through,$foreignKey,$throughKey, $localKey, $alias)
{
// 记录当前关联信息
$this->type = self::HAS_MANY_THROUGH;
$this->model = $model;
$this->middle = $through;
$this->foreignKey = $foreignKey;
$this->throughKey = $throughKey;
$this->localKey = $localKey;
$this->alias = $alias;
// 返回关联的模型对象
return $this;
}
/**
* BELONGS TO MANY 关联定义
* @access public
@@ -621,9 +654,26 @@ class Relation
if ($this->model) {
$model = new $this->model;
$db = $model->db();
if (self::HAS_MANY == $this->type && isset($this->parent->{$this->localKey})) {
// 关联查询带入关联条件
$db->where($this->foreignKey, $this->parent->{$this->localKey});
switch($this->type){
case self::HAS_MANY:
if (isset($this->parent->{$this->localKey})) {
// 关联查询带入关联条件
$db->where($this->foreignKey, $this->parent->{$this->localKey});
}
break;
case self::HAS_MANY_THROUGH:
$through = $this->middle;
$model = $this->model;
$table = $model::getTable();
$throughTable = $through::getTable();
$pk = (new $this->model)->getPk();
$throughKey = $this->throughKey;
$modelTable = $this->parent->getTable();
$result = $db->field($table.'.*')
->join($throughTable,$throughTable.'.'.$pk.'='.$table.'.'.$throughKey)
->join($modelTable,$modelTable.'.'.$this->localKey.'='.$throughTable.'.'.$this->foreignKey)
->where($throughTable.'.'.$this->foreignKey, $this->parent->{$this->localKey});
break;
}
return call_user_func_array([$db, $method], $args);
} else {