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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: liu21st <[email protected]> |
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// +---------------------------------------------------------------------- |
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declare (strict_types = 1); |
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namespace think; |
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use think\helper\Arr; |
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/** |
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* 视图类 |
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* @package think |
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*/ |
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class View extends Manager |
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{ |
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protected $namespace = '\\think\\view\\driver\\'; |
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/** |
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* 模板变量 |
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* @var array |
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*/ |
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protected $data = []; |
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/** |
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* 内容过滤 |
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* @var mixed |
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*/ |
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protected $filter; |
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/** |
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* 获取模板引擎 |
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* @access public |
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* @param string $type 模板引擎类型 |
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* @return $this |
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*/ |
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public function engine(string $type = null) |
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{ |
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return $this->driver($type); |
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} |
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/** |
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* 模板变量赋值 |
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* @access public |
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* @param string|array $name 模板变量 |
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* @param mixed $value 变量值 |
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* @return $this |
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*/ |
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public function assign($name, $value = null) |
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{ |
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if (is_array($name)) { |
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$this->data = array_merge($this->data, $name); |
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} else { |
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$this->data[$name] = $value; |
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} |
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return $this; |
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} |
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/** |
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* 视图过滤 |
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* @access public |
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* @param Callable $filter 过滤方法或闭包 |
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* @return $this |
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*/ |
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public function filter(callable $filter = null) |
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{ |
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$this->filter = $filter; |
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return $this; |
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} |
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/** |
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* 解析和获取模板内容 用于输出 |
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* @access public |
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* @param string $template 模板文件名或者内容 |
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* @param array $vars 模板变量 |
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* @return string |
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* @throws \Exception |
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*/ |
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public function fetch(string $template = '', array $vars = []): string |
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{ |
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return $this->getContent(function () use ($vars, $template) { |
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$this->engine()->fetch($template, array_merge($this->data, $vars)); |
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}); |
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} |
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/** |
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* 渲染内容输出 |
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* @access public |
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* @param string $content 内容 |
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* @param array $vars 模板变量 |
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* @return string |
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*/ |
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public function display(string $content, array $vars = []): string |
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{ |
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return $this->getContent(function () use ($vars, $content) { |
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$this->engine()->display($content, array_merge($this->data, $vars)); |
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}); |
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} |
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/** |
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* 获取模板引擎渲染内容 |
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* @param $callback |
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* @return string |
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* @throws \Exception |
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*/ |
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protected function getContent($callback): string |
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{ |
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// 页面缓存 |
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ob_start(); |
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if (PHP_VERSION > 8.0) { |
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ob_implicit_flush(false); |
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} else { |
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ob_implicit_flush(0); |
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} |
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// 渲染输出 |
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try { |
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$callback(); |
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} catch (\Exception $e) { |
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ob_end_clean(); |
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throw $e; |
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} |
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// 获取并清空缓存 |
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$content = ob_get_clean(); |
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if ($this->filter) { |
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$content = call_user_func_array($this->filter, [$content]); |
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} |
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return $content; |
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} |
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/** |
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* 模板变量赋值 |
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* @access public |
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* @param string $name 变量名 |
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* @param mixed $value 变量值 |
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*/ |
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public function __set($name, $value) |
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{ |
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$this->data[$name] = $value; |
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} |
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/** |
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* 取得模板显示变量的值 |
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* @access protected |
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* @param string $name 模板变量 |
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* @return mixed |
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*/ |
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public function __get($name) |
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{ |
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return $this->data[$name]; |
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} |
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/** |
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* 检测模板变量是否设置 |
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* @access public |
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* @param string $name 模板变量名 |
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* @return bool |
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*/ |
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public function __isset($name) |
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{ |
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return isset($this->data[$name]); |
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} |
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protected function resolveConfig(string $name) |
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{ |
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$config = $this->app->config->get('view', []); |
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Arr::forget($config, 'type'); |
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return $config; |
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} |
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/** |
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183
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* 默认驱动 |
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* @return string|null |
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*/ |
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public function getDefaultDriver() |
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{ |
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return $this->app->config->get('view.type', 'php'); |
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} |
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} |
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