From b89991dc41fb4d341e29da35443ebe19b181cef1 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Thu, 21 Apr 2016 14:44:14 +0800
Subject: [PATCH] =?UTF-8?q?Model=E7=B1=BB=E5=A2=9E=E5=8A=A0has=E5=92=8Chas?=
 =?UTF-8?q?Where=E6=96=B9=E6=B3=95=E7=94=A8=E4=BA=8E=E6=A0=B9=E6=8D=AE?=
 =?UTF-8?q?=E5=85=B3=E8=81=94=E8=A1=A8=E7=9A=84=E6=9D=A1=E4=BB=B6=E6=9D=A5?=
 =?UTF-8?q?=E6=9F=A5=E8=AF=A2=E5=BD=93=E5=89=8D=E6=A8=A1=E5=9E=8B=E6=95=B0?=
 =?UTF-8?q?=E6=8D=AE?=
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---
 library/think/Model.php | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/library/think/Model.php b/library/think/Model.php
index 005e26da..cda95775 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -590,6 +590,44 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         return $model;
     }
 
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string $relation 关联方法名
+     * @param string $operator 比较操作符
+     * @param integer $count 个数
+     * @param string $id 关联表的统计字段
+     * @return \think\Model
+     */
+    public static function has($relation, $operator = '>=', $count = 1, $id = '*')
+    {
+        $class  = new static();
+        $model  = $class->$relation();
+        $info   = $class->getRelationInfo();
+        $result = $model->group($info['foreignKey'])
+            ->having('count(' . $id . ')' . $operator . $count)
+            ->column($info['foreignKey']);
+        return self::db()->where($info['localKey'], 'in', $result);
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string $relation 关联方法名
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return \think\Model
+     */
+    public static function hasWhere($relation, $where = [])
+    {
+        $class  = new static();
+        $model  = $class->$relation();
+        $info   = $class->getRelationInfo();
+        $result = $model->group($info['foreignKey'])
+            ->where($where)
+            ->column($info['foreignKey']);
+        return self::db()->where($info['localKey'], 'in', $result);
+    }
+
     /**
      * 解析模型的完整命名空间
      * @access public