php - 如何编写我自己的 Smarty If-case

Question

我正在编写自己的管理，当然我正在使用 Smarty。现在，我想做的是添加一个与 {if} 标签非常相似的访问检查功能。

我想写的是:

{userAccess module='MyModule' action='WriteMessage'}
Yeey.. I can write something. My name is {$myName}.
{/userAccess}

但我不知道该怎么做。有人可以指出我正确的方向吗？此外，如果可能的话，添加和 {else} 到它。所以代码将是:

{userAccess module='MyModule' action='WriteMessage'}
Yeey.. I can write something. My name is {$myName}.
{else}
Nooo.. :( I don't have access.
{/userAccess}

Answer 1

我解决了这个问题，为 smarty 创建了我自己的“内部”功能。这可能不是 Smarty 打算使用它的方式，但它确实适合我……这对我来说是最重要的。

这是我的最终结果:

<?php
/**
 * Smarty Internal Plugin Compile UserAccess
 * 
 * Compiles the {useraccess} {useraccesselse} {/useraccess} tags
 * 
 * @package Smarty
 * @subpackage Compiler
 * @author Paul Peelen
 */

/**
 * Smarty Internal Plugin Compile useraccess Class
 */
class Smarty_Internal_Compile_useraccess extends Smarty_Internal_CompileBase {
    // attribute definitions
    public $required_attributes = array('module', 'action');
    public $optional_attributes = array('userid');                  // Not yet implemented
    public $shorttag_order = array('module','action','userid');

    /**
     * Compiles code for the {useraccess} tag
     * 
     * @param array $args array with attributes module parser
     * @param object $compiler compiler object
     * @param array $parameter array with compilation parameter
     * @return string compiled code
     */
    public function compile($args, $compiler, $parameter)
    {
        $this->compiler = $compiler;
        $tpl = $compiler->template; 
        // check and get attributes
        $_attr = $this->_get_attributes($args);

        $module = $_attr['module'];
        $action = $_attr['action'];

        if (!is_string($module) || !is_string($action))
        {
            exit ("ERROR");
        }

        $this->_open_tag('useraccess', array('useraccess', $this->compiler->nocache, $module, $action));
        $this->compiler->nocache = $this->compiler->nocache | $this->compiler->tag_nocache;

        $output = "<?php ";
        $output .= "\$oAuth = \$GLOBALS['oAuth'];\n";
        $output .= " \$_smarty_tpl->tpl_vars[$module] = new Smarty_Variable;\n";
        $compiler->local_var[$module] = true;

        $output .= " \$_smarty_tpl->tpl_vars[$action] = new Smarty_Variable;\n";
        $compiler->local_var[$action] = true;

        $output .= "if (\$oAuth->getUserSubRights($action,$module)) {";
        $output .= "?>";

        return $output;
    } 
} 

/**
 * Smarty Internal Plugin Compile UserAccessElse Class
 */
class Smarty_Internal_Compile_UserAccessElse extends Smarty_Internal_CompileBase {
    /**
     * Compiles code for the {useraccesselse} tag
     * 
     * @param array $args array with attributes module parser
     * @param object $compiler compiler object
     * @param array $parameter array with compilation parameter
     * @return string compiled code
     */
    public function compile($args, $compiler, $parameter)
    {
        $this->compiler = $compiler; 
        // check and get attributes
        $_attr = $this->_get_attributes($args);

        list($_open_tag, $nocache, $item, $key) = $this->_close_tag(array('useraccess'));
        $this->_open_tag('useraccesselse', array('useraccesselse', $nocache, $item, $key));

        return "<?php } else { ?>";
    } 
} 

/**
 * Smarty Internal Plugin Compile UserAccessclose Class
 */
class Smarty_Internal_Compile_UserAccessclose extends Smarty_Internal_CompileBase {
    /**
     * Compiles code for the {/useraccess} tag
     * 
     * @param array $args array with attributes module parser
     * @param object $compiler compiler object
     * @param array $parameter array with compilation parameter
     * @return string compiled code
     */
    public function compile($args, $compiler, $parameter)
    {
        $this->compiler = $compiler; 
        // check and get attributes
        $_attr = $this->_get_attributes($args); 
        // must endblock be nocache?
        if ($this->compiler->nocache) {
            $this->compiler->tag_nocache = true;
        } 

        list($_open_tag, $this->compiler->nocache, $item, $key) = $this->_close_tag(array('useraccess', 'useraccesselse'));
        unset($compiler->local_var[$item]);
        if ($key != null) {
            unset($compiler->local_var[$key]);
        } 

        return "<?php } ?>";
    } 
} 

我希望这对将来遇到此问题的任何人有所帮助。