diff --git a/core/base.php b/core/base.php
index cbe288bf..63fc16c3 100644
--- a/core/base.php
+++ b/core/base.php
@@ -9,7 +9,7 @@
 // | Author: liu21st <liu21st@gmail.com>
 // +----------------------------------------------------------------------
 
-define('THINK_VERSION', '5.0.5');
+define('THINK_VERSION', '5.0.6');
 define('THINK_START_TIME', microtime(true));
 define('THINK_START_MEM', memory_get_usage());
 define('EXT', '.php');
diff --git a/core/convention.php b/core/convention.php
index b6f23e28..887b076d 100644
--- a/core/convention.php
+++ b/core/convention.php
@@ -206,7 +206,7 @@ return [
         // 是否自动开启 SESSION
         'auto_start'     => true,
         'httponly'       => true,
-        'secure'         => true,
+        'secure'         => false,
     ],
 
     // +----------------------------------------------------------------------
diff --git a/core/lang/zh-cn.php b/core/lang/zh-cn.php
index b837bc41..c6c5a50f 100644
--- a/core/lang/zh-cn.php
+++ b/core/lang/zh-cn.php
@@ -64,4 +64,5 @@ return [
     'invalid request'           => '非法请求',
     'bind attr has exists'      => '模型的属性已经存在',
     'relation data not exists'  => '关联数据不存在',
+    'relation not support'      => '关联不支持',
 ];
diff --git a/core/library/think/Config.php b/core/library/think/Config.php
index fc6c50ac..2b808434 100644
--- a/core/library/think/Config.php
+++ b/core/library/think/Config.php
@@ -87,7 +87,7 @@ class Config
             return isset(self::$config[$range][strtolower($name)]);
         } else {
             // 二维数组设置和获取支持
-            $name = explode('.', $name);
+            $name = explode('.', $name, 2);
             return isset(self::$config[$range][strtolower($name[0])][$name[1]]);
         }
     }
@@ -111,7 +111,7 @@ class Config
             return isset(self::$config[$range][$name]) ? self::$config[$range][$name] : null;
         } else {
             // 二维数组设置和获取支持
-            $name    = explode('.', $name);
+            $name    = explode('.', $name, 2);
             $name[0] = strtolower($name[0]);
             return isset(self::$config[$range][$name[0]][$name[1]]) ? self::$config[$range][$name[0]][$name[1]] : null;
         }
@@ -135,7 +135,7 @@ class Config
                 self::$config[$range][strtolower($name)] = $value;
             } else {
                 // 二维数组设置和获取支持
-                $name                                                 = explode('.', $name);
+                $name                                                 = explode('.', $name, 2);
                 self::$config[$range][strtolower($name[0])][$name[1]] = $value;
             }
             return;
diff --git a/core/library/think/Controller.php b/core/library/think/Controller.php
index 69db0a1d..7aba39cd 100644
--- a/core/library/think/Controller.php
+++ b/core/library/think/Controller.php
@@ -40,7 +40,7 @@ class Controller
     protected $beforeActionList = [];
 
     /**
-     * 架构函数
+     * 构造方法
      * @param Request $request Request对象
      * @access public
      */
diff --git a/core/library/think/Model.php b/core/library/think/Model.php
index 61baa3a7..ebeffbb4 100644
--- a/core/library/think/Model.php
+++ b/core/library/think/Model.php
@@ -14,7 +14,7 @@ namespace think;
 use InvalidArgumentException;
 use think\db\Query;
 use think\Exception\ValidateException;
-use think\model\Collection;
+use think\model\Collection as ModelCollection;
 use think\model\Relation;
 use think\model\relation\BelongsTo;
 use think\model\relation\BelongsToMany;
@@ -109,7 +109,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     protected static $initialized = [];
 
     /**
-     * 架构函数
+     * 构造方法
      * @access public
      * @param array|object $data 数据
      */
@@ -624,7 +624,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 转换子模型对象
      * @access protected
-     * @param Model|Collection $model
+     * @param Model|ModelCollection $model
      * @param                  $visible
      * @param                  $hidden
      * @param                  $key
@@ -663,7 +663,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         }
 
         foreach ($data as $key => $val) {
-            if ($val instanceof Model || $val instanceof Collection) {
+            if ($val instanceof Model || $val instanceof ModelCollection) {
                 // 关联模型对象
                 $item[$key] = $this->subToArray($val, $visible, $hidden, $key);
             } elseif (is_array($val) && reset($val) instanceof Model) {
@@ -712,14 +712,14 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 转换当前模型数据集为数据集对象
      * @access public
-     * @param array|Collection $collection 数据集
-     * @return Collection
+     * @param array|\think\Collection $collection 数据集
+     * @return \think\Collection
      */
     public function toCollection($collection)
     {
         if ($this->resultSetType) {
             if ('collection' == $this->resultSetType) {
-                $collection = new Collection($collection);
+                $collection = new ModelCollection($collection);
             } elseif (false !== strpos($this->resultSetType, '\\')) {
                 $class      = $this->resultSetType;
                 $collection = new $class($collection);
@@ -1081,7 +1081,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
 
         // 删除条件
         $pk = $this->getPk();
-        if (isset($this->data[$pk])) {
+        if (is_string($pk) && isset($this->data[$pk])) {
             $where = [$pk => $this->data[$pk]];
         } elseif (!empty($this->updateWhere)) {
             $where = $this->updateWhere;
@@ -1422,15 +1422,15 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      * @param mixed   $operator 比较操作符
      * @param integer $count    个数
      * @param string  $id       关联表的统计字段
-     * @return Model
+     * @return Relation|Query
      */
     public static function has($relation, $operator = '>=', $count = 1, $id = '*')
     {
-        $model = new static();
+        $relation = (new static())->$relation();
         if (is_array($operator) || $operator instanceof \Closure) {
-            return $model->$relation()->hasWhere($operator);
+            return $relation->hasWhere($operator);
         }
-        return $model->$relation()->has($operator, $count, $id);
+        return $relation->has($operator, $count, $id);
     }
 
     /**
@@ -1438,12 +1438,11 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      * @access public
      * @param string $relation 关联方法名
      * @param mixed  $where    查询条件（数组或者闭包）
-     * @return Model
+     * @return Relation|Query
      */
     public static function hasWhere($relation, $where = [])
     {
-        $model = new static();
-        return $model->$relation()->hasWhere($where);
+        return (new static())->$relation()->hasWhere($where);
     }
 
     /**
@@ -1483,7 +1482,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 $closure  = $relation;
                 $relation = $key;
             }
-            if (strpos($relation, '.')) {
+            if (is_array($relation)) {
+                $subRelation = $relation;
+                $relation    = $key;
+            } elseif (strpos($relation, '.')) {
                 list($relation, $subRelation) = explode('.', $relation, 2);
             }
             $method                = Loader::parseName($relation, 1, false);
@@ -1509,7 +1511,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 $closure  = $relation;
                 $relation = $key;
             }
-            if (strpos($relation, '.')) {
+            if (is_array($relation)) {
+                $subRelation = $relation;
+                $relation    = $key;
+            } elseif (strpos($relation, '.')) {
                 list($relation, $subRelation) = explode('.', $relation, 2);
             }
             $relation = Loader::parseName($relation, 1, false);
@@ -1535,7 +1540,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 $closure  = $relation;
                 $relation = $key;
             }
-            if (strpos($relation, '.')) {
+            if (is_array($relation)) {
+                $subRelation = $relation;
+                $relation    = $key;
+            } elseif (strpos($relation, '.')) {
                 list($relation, $subRelation) = explode('.', $relation, 2);
             }
             $relation = Loader::parseName($relation, 1, false);
@@ -1559,10 +1567,16 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             if ($relation instanceof \Closure) {
                 $closure  = $relation;
                 $relation = $key;
+            } elseif (is_string($key)) {
+                $name     = $relation;
+                $relation = $key;
             }
             $relation = Loader::parseName($relation, 1, false);
             $count    = $this->$relation()->relationCount($result, $closure);
-            $result->setAttr(Loader::parseName($relation) . '_count', $count);
+            if (!isset($name)) {
+                $name = Loader::parseName($relation) . '_count';
+            }
+            $result->setAttr($name, $count);
         }
     }
 
diff --git a/core/library/think/Request.php b/core/library/think/Request.php
index d39153fd..f32637d5 100644
--- a/core/library/think/Request.php
+++ b/core/library/think/Request.php
@@ -120,7 +120,7 @@ class Request
     protected $isCheckCache;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access protected
      * @param array $options 参数
      */
@@ -1523,13 +1523,13 @@ class Request
                     }
                 }
                 // 自动缓存功能
-                $key = '__URL__';
+                $key = md5($this->host()) . '__URL__';
             } elseif (strpos($key, '|')) {
                 list($key, $fun) = explode('|', $key);
             }
             // 特殊规则替换
             if (false !== strpos($key, '__')) {
-                $key = str_replace(['__MODULE__', '__CONTROLLER__', '__ACTION__', '__URL__'], [$this->module, $this->controller, $this->action, md5($this->url())], $key);
+                $key = str_replace(['__MODULE__', '__CONTROLLER__', '__ACTION__', '__URL__', ''], [$this->module, $this->controller, $this->action, md5($this->url())], $key);
             }
 
             if (false !== strpos($key, ':')) {
diff --git a/core/library/think/Response.php b/core/library/think/Response.php
index 656198f0..d0345782 100644
--- a/core/library/think/Response.php
+++ b/core/library/think/Response.php
@@ -40,7 +40,7 @@ class Response
     protected $content = null;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access   public
      * @param mixed $data    输出数据
      * @param int   $code
diff --git a/core/library/think/Route.php b/core/library/think/Route.php
index 1629d636..cf640a4a 100644
--- a/core/library/think/Route.php
+++ b/core/library/think/Route.php
@@ -232,6 +232,7 @@ class Route
     public static function rule($rule, $route = '', $type = '*', $option = [], $pattern = [])
     {
         $group = self::getGroup('name');
+
         if (!is_null($group)) {
             // 路由分组
             $option  = array_merge(self::getGroup('option'), $option);
@@ -304,8 +305,12 @@ class Route
         }
         $vars = self::parseVar($rule);
         if (isset($name)) {
-            $key = $group ? $group . ($rule ? '/' . $rule : '') : $rule;
-            self::name($name, [$key, $vars, self::$domain]);
+            $key    = $group ? $group . ($rule ? '/' . $rule : '') : $rule;
+            $suffix = isset($option['ext']) ? $option['ext'] : null;
+            self::name($name, [$key, $vars, self::$domain, $suffix]);
+        }
+        if (isset($option['modular'])) {
+            $route = $option['modular'] . '/' . $route;
         }
         if ($group) {
             if ('*' != $type) {
@@ -447,7 +452,8 @@ class Route
                     $vars   = self::parseVar($key);
                     $item[] = ['rule' => $key, 'route' => $route, 'var' => $vars, 'option' => $options, 'pattern' => $patterns];
                     // 设置路由标识
-                    self::name($route, [$name . ($key ? '/' . $key : ''), $vars, self::$domain]);
+                    $suffix = isset($options['ext']) ? $options['ext'] : null;
+                    self::name($route, [$name . ($key ? '/' . $key : ''), $vars, self::$domain, $suffix]);
                 }
                 self::$rules['*'][$name] = ['rule' => $item, 'route' => '', 'var' => [], 'option' => $option, 'pattern' => $pattern];
             }
@@ -1126,8 +1132,8 @@ class Route
              || (isset($option['ajax']) && !$option['ajax'] && $request->isAjax()) // 非Ajax检测
              || (isset($option['pjax']) && $option['pjax'] && !$request->isPjax()) // Pjax检测
              || (isset($option['pjax']) && !$option['pjax'] && $request->isPjax()) // 非Pjax检测
-             || (isset($option['ext']) && false === stripos('|' . $option['ext'] . '|', $request->ext() ? '|' . $request->ext() . '|' : '')) // 伪静态后缀检测
-             || (isset($option['deny_ext']) && false !== stripos('|' . $option['deny_ext'] . '|', $request->ext() ? '|' . $request->ext() . '|' : ''))
+             || (isset($option['ext']) && false === stripos('|' . $option['ext'] . '|', '|' . $request->ext() . '|')) // 伪静态后缀检测
+             || (isset($option['deny_ext']) && false !== stripos('|' . $option['deny_ext'] . '|', '|' . $request->ext() . '|'))
             || (isset($option['domain']) && !in_array($option['domain'], [$_SERVER['HTTP_HOST'], self::$subDomain])) // 域名检测
              || (isset($option['https']) && $option['https'] && !$request->isSsl()) // https检测
              || (isset($option['https']) && !$option['https'] && $request->isSsl()) // https检测
@@ -1164,7 +1170,7 @@ class Route
         $len1 = substr_count($url, '|');
         $len2 = substr_count($rule, '/');
         // 多余参数是否合并
-        $merge = !empty($option['merge_extra_vars']) ? true : false;
+        $merge = !empty($option['merge_extra_vars']);
         if ($merge && $len1 > $len2) {
             $url = str_replace('|', $depr, $url);
             $url = implode('|', explode($depr, $url, $len2 + 1));
diff --git a/core/library/think/Template.php b/core/library/think/Template.php
index 66ba9e18..7e20407c 100644
--- a/core/library/think/Template.php
+++ b/core/library/think/Template.php
@@ -57,7 +57,7 @@ class Template
     protected $storage;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      */
     public function __construct(array $config = [])
diff --git a/core/library/think/Url.php b/core/library/think/Url.php
index d7dfd973..de3cd912 100644
--- a/core/library/think/Url.php
+++ b/core/library/think/Url.php
@@ -80,6 +80,9 @@ class Url
             if (!empty($match[1])) {
                 $domain = $match[1];
             }
+            if (!is_null($match[2])) {
+                $suffix = $match[2];
+            }
         } elseif (!empty($rule) && isset($name)) {
             throw new \InvalidArgumentException('route name not exists:' . $name);
         } else {
@@ -288,18 +291,18 @@ class Url
     public static function getRuleUrl($rule, &$vars = [])
     {
         foreach ($rule as $item) {
-            list($url, $pattern, $domain) = $item;
+            list($url, $pattern, $domain, $suffix) = $item;
             if (empty($pattern)) {
-                return [$url, $domain];
+                return [$url, $domain, $suffix];
             }
             foreach ($pattern as $key => $val) {
                 if (isset($vars[$key])) {
                     $url = str_replace(['[:' . $key . ']', '<' . $key . '?>', ':' . $key . '', '<' . $key . '>'], $vars[$key], $url);
                     unset($vars[$key]);
-                    $result = [$url, $domain];
+                    $result = [$url, $domain, $suffix];
                 } elseif (2 == $val) {
                     $url    = str_replace(['/[:' . $key . ']', '[:' . $key . ']', '<' . $key . '?>'], '', $url);
-                    $result = [$url, $domain];
+                    $result = [$url, $domain, $suffix];
                 } else {
                     break;
                 }
diff --git a/core/library/think/Validate.php b/core/library/think/Validate.php
index 2f728a60..718ed7a1 100644
--- a/core/library/think/Validate.php
+++ b/core/library/think/Validate.php
@@ -102,7 +102,7 @@ class Validate
     protected $batch = false;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param array $rules 验证规则
      * @param array $message 验证提示信息
diff --git a/core/library/think/View.php b/core/library/think/View.php
index 020e5789..96ae56c9 100644
--- a/core/library/think/View.php
+++ b/core/library/think/View.php
@@ -25,7 +25,7 @@ class View
     protected $replace = [];
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param array $engine  模板引擎参数
      * @param array $replace  字符串替换参数
diff --git a/core/library/think/cache/driver/File.php b/core/library/think/cache/driver/File.php
index dba02c3e..5aadb2b1 100644
--- a/core/library/think/cache/driver/File.php
+++ b/core/library/think/cache/driver/File.php
@@ -28,7 +28,7 @@ class File extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options
      */
     public function __construct($options = [])
@@ -225,6 +225,7 @@ class File extends Driver
         foreach ($files as $path) {
             if (is_dir($path)) {
                 array_map('unlink', glob($path . '/*.php'));
+                rmdir($path);
             } else {
                 unlink($path);
             }
diff --git a/core/library/think/cache/driver/Lite.php b/core/library/think/cache/driver/Lite.php
index 57727651..eeb96a19 100644
--- a/core/library/think/cache/driver/Lite.php
+++ b/core/library/think/cache/driver/Lite.php
@@ -26,7 +26,7 @@ class Lite extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      *
      * @param array $options
diff --git a/core/library/think/cache/driver/Memcache.php b/core/library/think/cache/driver/Memcache.php
index d41939d8..1fbd3b08 100644
--- a/core/library/think/cache/driver/Memcache.php
+++ b/core/library/think/cache/driver/Memcache.php
@@ -25,7 +25,7 @@ class Memcache extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options 缓存参数
      * @access public
      * @throws \BadFunctionCallException
diff --git a/core/library/think/cache/driver/Memcached.php b/core/library/think/cache/driver/Memcached.php
index 35fafd07..fa312e8e 100644
--- a/core/library/think/cache/driver/Memcached.php
+++ b/core/library/think/cache/driver/Memcached.php
@@ -27,7 +27,7 @@ class Memcached extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options 缓存参数
      * @access public
      */
diff --git a/core/library/think/cache/driver/Redis.php b/core/library/think/cache/driver/Redis.php
index 360f515a..4f618785 100644
--- a/core/library/think/cache/driver/Redis.php
+++ b/core/library/think/cache/driver/Redis.php
@@ -34,7 +34,7 @@ class Redis extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options 缓存参数
      * @access public
      */
diff --git a/core/library/think/cache/driver/Sqlite.php b/core/library/think/cache/driver/Sqlite.php
index 76c592d8..305fd9e8 100644
--- a/core/library/think/cache/driver/Sqlite.php
+++ b/core/library/think/cache/driver/Sqlite.php
@@ -28,7 +28,7 @@ class Sqlite extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options 缓存参数
      * @throws \BadFunctionCallException
      * @access public
diff --git a/core/library/think/cache/driver/Wincache.php b/core/library/think/cache/driver/Wincache.php
index 5be8d0df..3076fc14 100644
--- a/core/library/think/cache/driver/Wincache.php
+++ b/core/library/think/cache/driver/Wincache.php
@@ -25,7 +25,7 @@ class Wincache extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options 缓存参数
      * @throws \BadFunctionCallException
      * @access public
diff --git a/core/library/think/cache/driver/Xcache.php b/core/library/think/cache/driver/Xcache.php
index 317a4ee3..2a0e07ad 100644
--- a/core/library/think/cache/driver/Xcache.php
+++ b/core/library/think/cache/driver/Xcache.php
@@ -25,7 +25,7 @@ class Xcache extends Driver
     ];
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $options 缓存参数
      * @access public
      * @throws \BadFunctionCallException
diff --git a/core/library/think/controller/Rest.php b/core/library/think/controller/Rest.php
index c297f4eb..8c5911df 100644
--- a/core/library/think/controller/Rest.php
+++ b/core/library/think/controller/Rest.php
@@ -32,7 +32,7 @@ abstract class Rest
     ];
 
     /**
-     * 架构函数 取得模板对象实例
+     * 构造函数 取得模板对象实例
      * @access public
      */
     public function __construct()
diff --git a/core/library/think/controller/Yar.php b/core/library/think/controller/Yar.php
index fcf5ced1..af4e9a1a 100644
--- a/core/library/think/controller/Yar.php
+++ b/core/library/think/controller/Yar.php
@@ -18,7 +18,7 @@ abstract class Yar
 {
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      */
     public function __construct()
diff --git a/core/library/think/db/Builder.php b/core/library/think/db/Builder.php
index 9034076e..56665527 100644
--- a/core/library/think/db/Builder.php
+++ b/core/library/think/db/Builder.php
@@ -32,7 +32,7 @@ abstract class Builder
     protected $deleteSql    = 'DELETE FROM %TABLE% %USING% %JOIN% %WHERE% %ORDER%%LIMIT% %LOCK%%COMMENT%';
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Connection    $connection 数据库连接对象实例
      * @param Query         $query      数据库查询对象实例
diff --git a/core/library/think/db/Connection.php b/core/library/think/db/Connection.php
index 0887093d..bc67b1d8 100644
--- a/core/library/think/db/Connection.php
+++ b/core/library/think/db/Connection.php
@@ -125,7 +125,7 @@ abstract class Connection
     protected $bind = [];
 
     /**
-     * 架构函数 读取数据库配置信息
+     * 构造函数 读取数据库配置信息
      * @access public
      * @param array $config 数据库配置数组
      */
@@ -365,8 +365,8 @@ abstract class Connection
             $this->bind = $bind;
         }
 
-        //释放前次的查询结果
-        if (!empty($this->PDOStatement) && $this->PDOStatement->queryString != $sql) {
+        // 释放前次的查询结果
+        if (!empty($this->PDOStatement)) {
             $this->free();
         }
 
diff --git a/core/library/think/db/Query.php b/core/library/think/db/Query.php
index 3d080dcc..cd5e9a2c 100644
--- a/core/library/think/db/Query.php
+++ b/core/library/think/db/Query.php
@@ -54,7 +54,7 @@ class Query
     private static $event = [];
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Connection $connection 数据库对象实例
      * @param string     $model      模型名
@@ -869,7 +869,7 @@ class Query
     public function view($join, $field = true, $on = null, $type = 'INNER')
     {
         $this->options['view'] = true;
-        if (is_array($join) && is_null($field)) {
+        if (is_array($join) && key($join) !== 0) {
             foreach ($join as $key => $val) {
                 $this->view($key, $val[0], isset($val[1]) ? $val[1] : null, isset($val[2]) ? $val[2] : 'INNER');
             }
@@ -2065,8 +2065,10 @@ class Query
             $sequence  = $sequence ?: (isset($options['sequence']) ? $options['sequence'] : null);
             $lastInsId = $this->getLastInsID($sequence);
             if ($lastInsId) {
-                $pk        = $this->getPk($options);
-                $data[$pk] = $lastInsId;
+                $pk = $this->getPk($options);
+                if (is_string($pk)) {
+                    $data[$pk] = $lastInsId;
+                }
             }
             $options['data'] = $data;
             $this->trigger('after_insert', $options);
@@ -2202,6 +2204,8 @@ class Query
             if (isset($key) && Cache::get($key)) {
                 // 删除缓存
                 Cache::rm($key);
+            } elseif (!empty($options['cache']['tag'])) {
+                Cache::clear($options['cache']['tag']);
             }
             // 执行操作
             $result = '' == $sql ? 0 : $this->execute($sql, $bind);
@@ -2375,6 +2379,8 @@ class Query
         }
         if (isset($data)) {
             return 'think:' . $options['table'] . '|' . $data;
+        } else {
+            return md5(serialize($options));
         }
     }
 
@@ -2412,8 +2418,10 @@ class Query
             $cache = $options['cache'];
             if (true === $cache['key'] && !is_null($data) && !is_array($data)) {
                 $key = 'think:' . (is_array($options['table']) ? key($options['table']) : $options['table']) . '|' . $data;
+            } elseif (is_string($cache['key'])) {
+                $key = $cache['key'];
             } elseif (!isset($key)) {
-                $key = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
+                $key = md5(serialize($options));
             }
             $result = Cache::get($key);
         }
@@ -2644,6 +2652,8 @@ class Query
         if (isset($key) && Cache::get($key)) {
             // 删除缓存
             Cache::rm($key);
+        } elseif (!empty($options['cache']['tag'])) {
+            Cache::clear($options['cache']['tag']);
         }
         // 执行操作
         $result = $this->execute($sql, $bind);
diff --git a/core/library/think/db/builder/Mysql.php b/core/library/think/db/builder/Mysql.php
index de38fac5..e432e396 100644
--- a/core/library/think/db/builder/Mysql.php
+++ b/core/library/think/db/builder/Mysql.php
@@ -38,6 +38,8 @@ class Mysql extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (!preg_match('/[,\'\"\*\(\)`.\s]/', $key)) {
diff --git a/core/library/think/db/builder/Pgsql.php b/core/library/think/db/builder/Pgsql.php
index 8b853a2f..67b98b44 100644
--- a/core/library/think/db/builder/Pgsql.php
+++ b/core/library/think/db/builder/Pgsql.php
@@ -57,6 +57,8 @@ class Pgsql extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (isset($table)) {
diff --git a/core/library/think/db/builder/Sqlite.php b/core/library/think/db/builder/Sqlite.php
index 02d1bf2e..680b4965 100644
--- a/core/library/think/db/builder/Sqlite.php
+++ b/core/library/think/db/builder/Sqlite.php
@@ -62,6 +62,8 @@ class Sqlite extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (isset($table)) {
diff --git a/core/library/think/db/builder/Sqlsrv.php b/core/library/think/db/builder/Sqlsrv.php
index d2f418f3..99f68409 100644
--- a/core/library/think/db/builder/Sqlsrv.php
+++ b/core/library/think/db/builder/Sqlsrv.php
@@ -75,6 +75,8 @@ class Sqlsrv extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (!is_numeric($key) && !preg_match('/[,\'\"\*\(\)\[.\s]/', $key)) {
diff --git a/core/library/think/log/driver/Socket.php b/core/library/think/log/driver/Socket.php
index 08fd8ace..d30bba30 100644
--- a/core/library/think/log/driver/Socket.php
+++ b/core/library/think/log/driver/Socket.php
@@ -43,7 +43,7 @@ class Socket
     protected $allowForceClientIds = []; //配置强制推送且被授权的client_id
 
     /**
-     * 架构函数
+     * 构造函数
      * @param array $config 缓存参数
      * @access public
      */
diff --git a/core/library/think/model/Merge.php b/core/library/think/model/Merge.php
index 47d54923..01f403f8 100644
--- a/core/library/think/model/Merge.php
+++ b/core/library/think/model/Merge.php
@@ -22,7 +22,7 @@ class Merge extends Model
     protected $mapFields     = []; //  需要处理的模型映射字段，避免混淆 array( id => 'user.id'  )
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param array|object $data 数据
      */
diff --git a/core/library/think/model/Pivot.php b/core/library/think/model/Pivot.php
index 7823370c..9fd45719 100644
--- a/core/library/think/model/Pivot.php
+++ b/core/library/think/model/Pivot.php
@@ -17,7 +17,7 @@ class Pivot extends Model
 {
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param array|object $data 数据
      * @param string $table 中间数据表名
diff --git a/core/library/think/model/relation/BelongsTo.php b/core/library/think/model/relation/BelongsTo.php
index d1c4b9bd..6996526d 100644
--- a/core/library/think/model/relation/BelongsTo.php
+++ b/core/library/think/model/relation/BelongsTo.php
@@ -17,7 +17,7 @@ use think\Model;
 class BelongsTo extends OneToOne
 {
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Model  $parent 上级模型对象
      * @param string $model 模型名
@@ -51,6 +51,45 @@ class BelongsTo extends OneToOne
         return $this->query->where($this->localKey, $this->parent->$foreignKey)->relation($subRelation)->find();
     }
 
+    /**
+     * 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 = '*')
+    {
+        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 = [])
+    {
+        $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->foreignKey . '=' . $relation . '.' . $this->localKey, $this->joinType)
+            ->where($where);
+    }
+
     /**
      * 预载入关联查询（数据集）
      * @access public
@@ -85,10 +124,10 @@ class BelongsTo extends OneToOne
             // 关联数据封装
             foreach ($resultSet as $result) {
                 // 关联模型
-                if (!isset($data[$result->$localKey])) {
+                if (!isset($data[$result->$foreignKey])) {
                     $relationModel = null;
                 } else {
-                    $relationModel = $data[$result->$localKey];
+                    $relationModel = $data[$result->$foreignKey];
                 }
 
                 if ($relationModel && !empty($this->bindAttr)) {
@@ -116,10 +155,10 @@ class BelongsTo extends OneToOne
         $foreignKey = $this->foreignKey;
         $data       = $this->eagerlyWhere($this, [$localKey => $result->$foreignKey], $localKey, $relation, $subRelation, $closure);
         // 关联模型
-        if (!isset($data[$result->$localKey])) {
+        if (!isset($data[$result->$foreignKey])) {
             $relationModel = null;
         } else {
-            $relationModel = $data[$result->$localKey];
+            $relationModel = $data[$result->$foreignKey];
         }
         if ($relationModel && !empty($this->bindAttr)) {
             // 绑定关联属性
diff --git a/core/library/think/model/relation/BelongsToMany.php b/core/library/think/model/relation/BelongsToMany.php
index 128287e0..b7758e9f 100644
--- a/core/library/think/model/relation/BelongsToMany.php
+++ b/core/library/think/model/relation/BelongsToMany.php
@@ -24,7 +24,7 @@ class BelongsToMany extends Relation
     protected $middle;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Model  $parent     上级模型对象
      * @param string $model      模型名
@@ -76,6 +76,31 @@ class BelongsToMany extends Relation
         return $result;
     }
 
+    /**
+     * 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（数据集）
      * @access public
diff --git a/core/library/think/model/relation/HasMany.php b/core/library/think/model/relation/HasMany.php
index 9bcdcead..364d793d 100644
--- a/core/library/think/model/relation/HasMany.php
+++ b/core/library/think/model/relation/HasMany.php
@@ -20,7 +20,7 @@ use think\model\Relation;
 class HasMany extends Relation
 {
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Model  $parent     上级模型对象
      * @param string $model      模型名
diff --git a/core/library/think/model/relation/HasManyThrough.php b/core/library/think/model/relation/HasManyThrough.php
index e1518972..dd6f6a55 100644
--- a/core/library/think/model/relation/HasManyThrough.php
+++ b/core/library/think/model/relation/HasManyThrough.php
@@ -13,6 +13,7 @@ namespace think\model\relation;
 
 use think\Db;
 use think\db\Query;
+use think\Exception;
 use think\Loader;
 use think\Model;
 use think\model\Relation;
@@ -25,7 +26,7 @@ class HasManyThrough extends Relation
     protected $through;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access   public
      * @param Model  $parent     上级模型对象
      * @param string $model      模型名
@@ -54,11 +55,36 @@ class HasManyThrough extends Relation
     public function getRelation($subRelation = '', $closure = null)
     {
         if ($closure) {
-            call_user_func_array($closure, [& $this->query]);
+            call_user_func_array($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
diff --git a/core/library/think/model/relation/HasOne.php b/core/library/think/model/relation/HasOne.php
index 2c0cf350..95a401bf 100644
--- a/core/library/think/model/relation/HasOne.php
+++ b/core/library/think/model/relation/HasOne.php
@@ -18,7 +18,7 @@ use think\Model;
 class HasOne extends OneToOne
 {
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Model  $parent     上级模型对象
      * @param string $model      模型名
@@ -47,12 +47,28 @@ class HasOne extends OneToOne
         // 执行关联定义方法
         $localKey = $this->localKey;
         if ($closure) {
-            call_user_func_array($closure, [& $this->query]);
+            call_user_func_array($closure, [ & $this->query]);
         }
         // 判断关联类型执行查询
         return $this->query->where($this->foreignKey, $this->parent->$localKey)->relation($subRelation)->find();
     }
 
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @return Query
+     */
+    public function has()
+    {
+        $table      = $this->query->getTable();
+        $localKey   = $this->localKey;
+        $foreignKey = $this->foreignKey;
+        return $this->parent->db()->alias('a')
+            ->whereExists(function ($query) use ($table, $localKey, $foreignKey) {
+                $query->table([$table => 'b'])->field('b.' . $foreignKey)->whereExp('a.' . $localKey, '=b.' . $foreignKey);
+            });
+    }
+
     /**
      * 根据关联条件查询当前模型
      * @access public
diff --git a/core/library/think/model/relation/MorphMany.php b/core/library/think/model/relation/MorphMany.php
index 3fc8179c..58e44135 100644
--- a/core/library/think/model/relation/MorphMany.php
+++ b/core/library/think/model/relation/MorphMany.php
@@ -13,6 +13,7 @@ namespace think\model\relation;
 
 use think\Db;
 use think\db\Query;
+use think\Exception;
 use think\Loader;
 use think\Model;
 use think\model\Relation;
@@ -26,7 +27,7 @@ class MorphMany extends Relation
     protected $type;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Model  $parent    上级模型对象
      * @param string $model     模型名
@@ -53,11 +54,36 @@ class MorphMany extends Relation
     public function getRelation($subRelation = '', $closure = null)
     {
         if ($closure) {
-            call_user_func_array($closure, [& $this->query]);
+            call_user_func_array($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')
+    {
+        throw new Exception('relation not support: has');
+    }
+
+    /**
+     * 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
@@ -113,7 +139,7 @@ class MorphMany extends Relation
         if (isset($result->$pk)) {
             $data = $this->eagerlyMorphToMany([
                 $this->morphKey  => $result->$pk,
-                $this->morphType => $this->type
+                $this->morphType => $this->type,
             ], $relation, $subRelation, $closure);
             $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$result->$pk]));
         }
@@ -132,7 +158,7 @@ class MorphMany extends Relation
         $count = 0;
         if (isset($result->$pk)) {
             if ($closure) {
-                call_user_func_array($closure, [& $this->query]);
+                call_user_func_array($closure, [ & $this->query]);
             }
             $count = $this->query->where([$this->morphKey => $result->$pk, $this->morphType => $this->type])->count();
         }
@@ -148,15 +174,15 @@ class MorphMany extends Relation
     public function getRelationCountQuery($closure)
     {
         if ($closure) {
-            call_user_func_array($closure, [& $this->query]);
+            call_user_func_array($closure, [ & $this->query]);
         }
 
         return $this->query->where([
             $this->morphKey  => [
                 'exp',
-                '=' . $this->parent->getTable() . '.' . $this->parent->getPk()
+                '=' . $this->parent->getTable() . '.' . $this->parent->getPk(),
             ],
-            $this->morphType => $this->type
+            $this->morphType => $this->type,
         ])->fetchSql()->count();
     }
 
@@ -173,7 +199,7 @@ class MorphMany extends Relation
     {
         // 预载入关联查询 支持嵌套预载入
         if ($closure) {
-            call_user_func_array($closure, [& $this]);
+            call_user_func_array($closure, [ & $this]);
         }
         $list     = $this->query->where($where)->with($subRelation)->select();
         $morphKey = $this->morphKey;
diff --git a/core/library/think/model/relation/MorphTo.php b/core/library/think/model/relation/MorphTo.php
index 5e1867f2..6c31a752 100644
--- a/core/library/think/model/relation/MorphTo.php
+++ b/core/library/think/model/relation/MorphTo.php
@@ -25,7 +25,7 @@ class MorphTo extends Relation
     protected $alias;
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param Model  $parent    上级模型对象
      * @param string $morphType 多态字段名
@@ -57,6 +57,31 @@ class MorphTo extends Relation
         return (new $model)->relation($subRelation)->find($pk);
     }
 
+    /**
+     * 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');
+    }
+
     /**
      * 解析模型的完整命名空间
      * @access public
diff --git a/core/library/think/template/TagLib.php b/core/library/think/template/TagLib.php
index b3325191..2e0d232f 100644
--- a/core/library/think/template/TagLib.php
+++ b/core/library/think/template/TagLib.php
@@ -68,7 +68,7 @@ class TagLib
     protected $comparison = [' nheq ' => ' !== ', ' heq ' => ' === ', ' neq ' => ' != ', ' eq ' => ' == ', ' egt ' => ' >= ', ' gt ' => ' > ', ' elt ' => ' <= ', ' lt ' => ' < '];
 
     /**
-     * 架构函数
+     * 构造函数
      * @access public
      * @param \stdClass $template 模板引擎对象
      */
diff --git a/core/library/traits/model/SoftDelete.php b/core/library/traits/model/SoftDelete.php
index 720b6e88..2b97ff72 100644
--- a/core/library/traits/model/SoftDelete.php
+++ b/core/library/traits/model/SoftDelete.php
@@ -142,7 +142,7 @@ trait SoftDelete
     {
         $field = isset($this->deleteTime) ? $this->deleteTime : 'delete_time';
         if (!strpos($field, '.')) {
-            $field = $this->db(false)->getTable() . '.' . $field;
+            $field = '__TABLE__.' . $field;
         }
         if (!$read && strpos($field, '.')) {
             $array = explode('.', $field);
diff --git a/core/tpl/think_exception.tpl b/core/tpl/think_exception.tpl
index e80c57b2..2d898c30 100644
--- a/core/tpl/think_exception.tpl
+++ b/core/tpl/think_exception.tpl
@@ -79,15 +79,17 @@
 <html>
 <head>
     <meta charset="UTF-8">
-    <title>系统发生错误</title>
+    <title><?php echo lang('System Error'); ?></title>
     <meta name="robots" content="noindex,nofollow" />
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
     <style>
         /* Base */
         body {
             color: #333;
-            font: 16px Verdana, "Helvetica Neue", helvetica, Arial, 'Microsoft YaHei', sans-serif;
+            font: 14px Verdana, "Helvetica Neue", helvetica, Arial, 'Microsoft YaHei', sans-serif;
             margin: 0;
             padding: 0 20px 20px;
+            word-break: break-word;
         }
         h1{
             margin: 10px 0 0;
@@ -103,6 +105,11 @@
             font-size: 18px;
             border-bottom: 1px solid #eee;
         }
+        h3.subheading {
+            color: #4288ce;
+            margin: 6px 0 0;
+            font-weight: 400;
+        }
         h3{
             margin: 12px;
             font-size: 16px;
@@ -143,7 +150,27 @@
             padding: 0;
             margin: 0;
         }
-    
+        /* Layout */
+        .col-md-3 {
+            width: 25%;
+        }
+        .col-md-9 {
+            width: 75%;
+        }
+        [class^="col-md-"] {
+            float: left;
+        }
+        .clearfix {
+            clear:both;
+        }
+        @media only screen 
+        and (min-device-width : 375px) 
+        and (max-device-width : 667px) { 
+            .col-md-3,
+            .col-md-9 {
+                width: 100%;
+            }
+        }
         /* Exception Info */
         .exception {
             margin-top: 20px;
@@ -378,16 +405,19 @@
     <div class="exception-var">
         <h2>Environment Variables</h2>
         <?php foreach ((array) $tables as $label => $value) { ?>
-        <table>
+        <div>
             <?php if(empty($value)){ ?>
-            <caption><?php echo $label; ?><small>empty</small></caption>
+            <div class="clearfix">
+                <div class="col-md-3"><strong><?php echo $label; ?></strong></div>
+                <div class="col-md-9"><small>empty</small></div>
+            </div>
             <?php } else { ?>
-            <caption><?php echo $label; ?></caption>
-            <tbody>
+            <h3 class="subheading"><?php echo $label; ?></h3>
+            <div>
                 <?php foreach ((array) $value as $key => $val) { ?>
-                <tr>
-                    <td><?php echo htmlentities($key); ?></td>
-                    <td>
+                <div class="clearfix">
+                    <div class="col-md-3"><strong><?php echo htmlentities($key); ?></strong></div>
+                    <div class="col-md-9"><small>
                         <?php 
                             if(is_array($val) || is_object($val)){ 
                                 echo htmlentities(json_encode($val, JSON_PRETTY_PRINT));
@@ -399,12 +429,12 @@
                                 echo 'Resource';
                             }
                         ?>
-                    </td>
-                </tr>
+                    </small></div>
+                </div>
                 <?php } ?>
-            </tbody>
+            </div>
             <?php } ?>
-        </table>
+        </div>
         <?php } ?>
     </div>
     <?php } ?>