格式规则:
```
* array('name' => '', 'type' => 'string', 'default' => '', 'min' => '', 'max' => '', 'regex' => '')
* array('name' => '', 'type' => 'int', 'default' => '', 'min' => '', 'max' => '',)
* array('name' => '', 'type' => 'float', 'default' => '', 'min' => '', 'max' => '',)
* array('name' => '', 'type' => 'boolean', 'default' => '',)
* array('name' => '', 'type' => 'date', 'default' => '',)
* array('name' => '', 'type' => 'array', 'default' => '', 'format' => 'json/explode', 'separator' => '')
* array('name' => '', 'type' => 'enum', 'default' => '', 'range' => array(...))
* array('name' => '', 'type' => 'file', 'default' => array(...), 'min' => '', 'max' => '', 'range' => array(...))
```
*
* @package PhalApi\Request
* @license http://www.phalapi.net/license GPL 协议
* @link http://www.phalapi.net/
* @author dogstar 2014-10-04
*/
class PhalApi_Request_Var {
/** ------------------ 对外开放操作 ------------------ **/
/**
* 统一格式化操作
* 扩展参数请参见各种类型格式化操作的参数说明
*
* @param string $varName 变量名
* @param array $rule 格式规则:
* array(
* 'name' => '变量名',
* 'type' => '类型',
* 'default' => '默认值',
* 'format' => '格式化字符串'
* ...
* )
* @param array $params 参数列表
* @return miexd 格式后的变量
*/
public static function format($varName, $rule, $params) {
$value = isset($rule['default']) ? $rule['default'] : NULL;
$type = !empty($rule['type']) ? strtolower($rule['type']) : 'string';
$key = isset($rule['name']) ? $rule['name'] : $varName;
$value = isset($params[$key]) ? $params[$key] : $value;
if ($value === NULL && $type != 'file') { //排除文件类型
return $value;
}
return static::formatAllType($type, $value, $rule);
}
/**
* 统一分发处理
* @param string $type 类型
* @param string $value 值
* @param array $rule 规则配置
* @return mixed
*/
protected static function formatAllType($type, $value, $rule) {
$diKey = '_formatter' . ucfirst($type);
$diDefautl = 'PhalApi_Request_Formatter_' . ucfirst($type);
$formatter = DI()->get($diKey, $diDefautl);
if (!($formatter instanceof Phalapi_Request_Formatter)) {
throw new PhalApi_Exception_InternalServerError(
T('invalid type: {type} for rule: {name}', array('type' => $type, 'name' => $rule['name']))
);
}
return $formatter->parse($value, $rule);
}
}