Init Repo

2019-09-06 23:53:10 +08:00
commit f0ef89dfbb
7905 changed files with 914138 additions and 0 deletions
--- a/thinkphp/library/think/model/relation/HasManyThrough.php
+++ b/thinkphp/library/think/model/relation/HasManyThrough.php
@ -0,0 +1,144 @@
+<?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\Exception;
+use think\Loader;
+use think\Model;
+use think\model\Relation;
+
+class HasManyThrough extends Relation
+{
+    // 中间关联表外键
+    protected $throughKey;
+    // 中间表模型
+    protected $through;
+
+    /**
+     * 构造函数
+     * @access   public
+     * @param Model  $parent     上级模型对象
+     * @param string $model      模型名
+     * @param string $through    中间模型名
+     * @param string $foreignKey 关联外键
+     * @param string $throughKey 关联外键
+     * @param string $localKey   关联主键
+     */
+    public function __construct(Model $parent, $model, $through, $foreignKey, $throughKey, $localKey)
+    {
+        $this->parent     = $parent;
+        $this->model      = $model;
+        $this->through    = $through;
+        $this->foreignKey = $foreignKey;
+        $this->throughKey = $throughKey;
+        $this->localKey   = $localKey;
+        $this->query      = (new $model)->db();
+    }
+
+    /**
+     * 延迟获取关联数据
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return false|\PDOStatement|string|\think\Collection
+     */
+    public function getRelation($subRelation = '', $closure = null)
+    {
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
+
+        return $this->relation($subRelation)->select();
+    }
+
+    /**
+     * 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  $joinType JOIN类型
+     * @return Query
+     */
+    public function has($operator = '>=', $count = 1, $id = '*', $joinType = 'INNER')
+    {
+        return $this->parent;
+    }
+
+    /**
+     * 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 = [])
+    {
+        throw new Exception('relation not support: hasWhere');
+    }
+
+    /**
+     * 预载入关联查询
+     * @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 $closure     闭包
+     * @return void
+     */
+    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
+    {}
+
+    /**
+     * 预载入关联查询 返回模型对象
+     * @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 $closure     闭包
+     * @return void
+     */
+    public function eagerlyResult(&$result, $relation, $subRelation, $closure)
+    {}
+
+    /**
+     * 关联统计
+     * @access public
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
+     * @return integer
+     */
+    public function relationCount($result, $closure)
+    {}
+
+    /**
+     * 执行基础查询（进执行一次）
+     * @access protected
+     * @return void
+     */
+    protected function baseQuery()
+    {
+        if (empty($this->baseQuery) && $this->parent->getData()) {
+            $through      = $this->through;
+            $alias        = Loader::parseName(basename(str_replace('\\', '/', $this->model)));
+            $throughTable = $through::getTable();
+            $pk           = (new $through)->getPk();
+            $throughKey   = $this->throughKey;
+            $modelTable   = $this->parent->getTable();
+            $this->query->field($alias . '.*')->alias($alias)
+                ->join($throughTable, $throughTable . '.' . $pk . '=' . $alias . '.' . $throughKey)
+                ->join($modelTable, $modelTable . '.' . $this->localKey . '=' . $throughTable . '.' . $this->foreignKey)
+                ->where($throughTable . '.' . $this->foreignKey, $this->parent->{$this->localKey});
+            $this->baseQuery = true;
+        }
+    }
+
+}