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增加随机排序支持

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thinkphp
2015-12-11 22:11:47 +08:00
parent 774736f41c
commit 7f851362b1
6 changed files with 48 additions and 18 deletions
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9
library/think/db/driver.php
View File

@@ -15,7 +15,6 @@ use PDO;
use think\Config;
use think\Debug;
use think\Exception;
use think\Lang;
use think\Log;
abstract class Driver
@@ -58,7 +57,7 @@ abstract class Driver
'slave_no' => '', // 指定从服务器序号
];
// 数据库表达式
protected $exp = ['eq' => '=', 'neq' => '<>', 'gt' => '>', 'egt' => '>=', 'lt' => '<', 'elt' => '<=', 'notlike' => 'NOT LIKE', 'like' => 'LIKE', 'in' => 'IN', 'notin' => 'NOT IN','not in' => 'NOT IN', 'between' => 'BETWEEN', 'not between' => 'NOT BETWEEN', 'notbetween' => 'NOT BETWEEN'];
protected $exp = ['eq' => '=', 'neq' => '<>', 'gt' => '>', 'egt' => '>=', 'lt' => '<', 'elt' => '<=', 'notlike' => 'NOT LIKE', 'like' => 'LIKE', 'in' => 'IN', 'notin' => 'NOT IN', 'not in' => 'NOT IN', 'between' => 'BETWEEN', 'not between' => 'NOT BETWEEN', 'notbetween' => 'NOT BETWEEN'];
// 查询表达式
protected $selectSql = 'SELECT%DISTINCT% %FIELD% FROM %TABLE%%FORCE%%JOIN%%WHERE%%GROUP%%HAVING%%ORDER%%LIMIT% %UNION%%LOCK%%COMMENT%';
// 查询次数
@@ -636,7 +635,7 @@ abstract class Driver
$data = is_string($val[1]) ? explode(',', $val[1]) : $val[1];
$whereStr .= $key . ' ' . $this->exp[$exp] . ' ' . $this->parseValue($data[0]) . ' AND ' . $this->parseValue($data[1]);
} else {
throw new Exception('where express error:'. $val[0]);
throw new Exception('where express error:' . $val[0]);
}
} else {
$count = count($val);
@@ -715,7 +714,7 @@ abstract class Driver
*/
protected function parseLimit($limit)
{
return !empty($limit) ? ' LIMIT ' . $limit . ' ' : '';
return (!empty($limit) && false === strpos($limit, '(')) ? ' LIMIT ' . $limit . ' ' : '';
}
/**
@@ -747,6 +746,8 @@ abstract class Driver
if (is_numeric($key)) {
if (false === strpos($val, '(')) {
$array[] = $this->parseKey($val);
} elseif ('[rand]' == $val) {
$array[] = $this->parseRand();
}
} else {
$sort = in_array(strtolower(trim($val)), ['asc', 'desc']) ? ' ' . $val : '';

10
library/think/db/driver/mysql.php
View File

@@ -107,4 +107,14 @@ class Mysql extends Driver
return $key;
}
/**
* 随机排序
* @access protected
* @return string
*/
protected function parseRand()
{
return 'rand()';
}
}

10
library/think/db/driver/oracle.php
View File

@@ -189,4 +189,14 @@ class Oracle extends Driver
}
return $key;
}
/**
* 随机排序
* @access protected
* @return string
*/
protected function parseRand()
{
return 'DBMS_RANDOM.value';
}
}

10
library/think/db/driver/pgsql.php
View File

@@ -110,4 +110,14 @@ class Pgsql extends Driver
}
return $key;
}
/**
* 随机排序
* @access protected
* @return string
*/
protected function parseRand()
{
return 'RANDOM()';
}
}

10
library/think/db/driver/sqlite.php
View File

@@ -91,4 +91,14 @@ class Sqlite extends Driver
}
return $limitStr;
}
/**
* 随机排序
* @access protected
* @return string
*/
protected function parseRand()
{
return 'RANDOM()';
}
}

17
library/think/db/driver/sqlsrv.php
View File

@@ -93,24 +93,13 @@ class Sqlsrv extends Driver
}
/**
* order分析
* 随机排序
* @access protected
* @param mixed $order
* @return string
*/
protected function parseOrder($order)
protected function parseRand()
{
$array = [];
foreach ($order as $key => $val) {
if (is_numeric($key)) {
$array[] = $this->parseKey($val);
} else {
$sort = in_array(strtolower(trim($val)), ['asc', 'desc']) ? ' ' . $val : '';
$array[] = $this->parseKey($key) . ' ' . $sort;
}
}
$order = implode(',', $array);
return !empty($order) ? ' ORDER BY ' . $order : ' ORDER BY rand()';
return 'rand()';
}
/**