yii源码分析3，yii源码分析
转载请注明：TheViper http://www.cnblogs.com/TheViper/
上一篇说到CWebApplication中的￥route=$this->getUrlManager ()->parseUrl ($this->getRequest());,得到$route=controler/actionid。
这篇说他后面的$this->runController ( $route );
<span> 1</span> <?<span>php
</span><span> 2</span> <span>class</span> CWebApplication <span>extends</span><span> CApplication {
</span><span> 3</span> <span>public</span> <span>$controllerNamespace</span><span>;
</span><span> 4</span> <span>private</span> <span>$_controllerPath</span><span>;
</span><span> 5</span> <span>private</span> <span>$_viewPath</span><span>;
</span><span> 6</span> <span>private</span> <span>$_systemViewPath</span><span>;
</span><span> 7</span> <span>private</span> <span>$_controller</span><span>;
</span><span> 8</span> <span>public</span> <span>$controllerMap</span>=<span>array</span><span>();
</span><span> 9</span> <span>public</span> <span>function</span> processRequest() {<span>//</span><span>开始执行请求
</span><span>10</span> <span> //获取urlManager组件，解析请求，得到controller/action这种格式的string,
</span><span>11</span> <span> //并且将隐藏参数与请求的参数一一对应，匹配起来，写入$_REQUEST中</span>
<span>12</span> <span>$route</span> = <span>$this</span>->getUrlManager ()->parseUrl (<span>$this</span>-><span>getRequest());
</span><span>13</span> <span>$this</span>->runController ( <span>$route</span><span> );
</span><span>14</span> <span> }
</span><span>15</span> <span>public</span> <span>function</span> getRequest() {<span>//</span><span>获取request组件</span>
<span>16</span> <span>return</span> <span>$this</span>->getComponent ( 'request'<span> );
</span><span>17</span> <span> }
</span><span>18</span> <span>protected</span> <span>function</span> registerCoreComponents() {<span>//</span><span>注册核心组件</span>
<span>19</span> parent::<span>registerCoreComponents ();
</span><span>20</span> <span> }
</span><span>21</span> <span>//</span><span>执行contronller</span>
<span>22</span> <span>public</span> <span>function</span> runController(<span>$route</span><span>) {
</span><span>23</span> <span>if</span> ((<span>$ca</span> = <span>$this</span>->createController ( <span>$route</span> )) !== <span>null</span><span>) {
</span><span>24</span> <span>list</span> ( <span>$controller</span>, <span>$actionID</span> ) = <span>$ca</span><span>;
</span><span>25</span> <span>$oldController</span> = <span>$this</span>-><span>_controller;
</span><span>26</span> <span>$this</span>->_controller = <span>$controller</span><span>;
</span><span>27</span> <span>$controller</span>->init ();<span>//</span><span>钩子,在执行action方法前调用，子类去实现</span>
<span>28</span> <span>$controller</span>->run ( <span>$actionID</span> );<span>//</span><span>开始转入controller类中action方法的执行</span>
<span>29</span> <span>$this</span>->_controller = <span>$oldController</span><span>;
</span><span>30</span> <span> }
</span><span>31</span> <span> }
</span><span>32</span> <span>//</span><span>创建controller类实例,从controller/action这种格式的string中解析出$controller, $actionID </span>
<span>33</span> <span>public</span> <span>function</span> createController(<span>$route</span>, <span>$owner</span> = <span>null</span><span>) {
</span><span>34</span> <span>if</span> (<span>$owner</span> === <span>null</span><span>)
</span><span>35</span> <span>$owner</span> = <span>$this</span><span>;
</span><span>36</span> <span>if</span> ((<span>$route</span> = <span>trim</span> ( <span>$route</span>, '/' )) === ''<span>)
</span><span>37</span> <span>$route</span> = <span>$owner</span>-><span>defaultController;
</span><span>38</span>
<span>39</span> <span>$route</span> .= '/'<span>;
</span><span>40</span> <span>while</span> ( (<span>$pos</span> = <span>strpos</span> ( <span>$route</span>, '/' )) !== <span>false</span><span> ) {
</span><span>41</span> <span>$id</span> = <span>substr</span> ( <span>$route</span>, 0, <span>$pos</span><span> );
</span><span>42</span> <span>if</span> (! <span>preg_match</span> ( '/^\w+$/', <span>$id</span><span> ))
</span><span>43</span> <span>return</span> <span>null</span><span>;
</span><span>44</span> <span>$id</span> = <span>strtolower</span> ( <span>$id</span><span> );
</span><span>45</span> <span>$route</span> = ( <span>string</span> ) <span>substr</span> ( <span>$route</span>, <span>$pos</span> + 1<span> );
</span><span>46</span> <span>if</span> (! <span>isset</span> ( <span>$basePath</span> )) <span>//</span><span> first segment</span>
<span>47</span> <span> {
</span><span>48</span> <span>$basePath</span> = <span>$owner</span>-><span>getControllerPath ();
</span><span>49</span> <span>$controllerID</span> = ''<span>;
</span><span>50</span> } <span>else</span><span> {
</span><span>51</span> <span>$controllerID</span> .= '/'<span>;
</span><span>52</span> <span> }
</span><span>53</span> <span>$className</span> = <span>ucfirst</span> ( <span>$id</span> ) . 'Controller'<span>;
</span><span>54</span> <span>$classFile</span> = <span>$basePath</span> . DIRECTORY_SEPARATOR . <span>$className</span> . '.php'<span>;
</span><span>55</span>
<span>56</span> <span>if</span> (<span>is_file</span> ( <span>$classFile</span><span> )) {
</span><span>57</span> <span>if</span> (! <span>class_exists</span> ( <span>$className</span>, <span>false</span><span> ))
</span><span>58</span> <span>require</span> (<span>$classFile</span><span>);
</span><span>59</span> <span>if</span> (<span>class_exists</span> ( <span>$className</span>, <span>false</span> ) && <span>is_subclass_of</span> ( <span>$className</span>, 'CController'<span> )) {
</span><span>60</span> <span>$id</span> [0] = <span>strtolower</span> ( <span>$id</span> [0<span>] );
</span><span>61</span> <span>return</span> <span>array</span><span> (
</span><span>62</span> <span>new</span> <span>$className</span> ( <span>$controllerID</span> . <span>$id</span>, <span>$owner</span> === <span>$this</span> ? <span>null</span> : <span>$owner</span> ),
<span>63</span> <span>$this</span>->parseActionParams ( <span>$route</span><span> )
</span><span>64</span> <span> );
</span><span>65</span> <span> }
</span><span>66</span> <span>return</span> <span>null</span><span>;
</span><span>67</span> <span> }
</span><span>68</span> <span>$controllerID</span> .= <span>$id</span><span>;
</span><span>69</span> <span>$basePath</span> .= DIRECTORY_SEPARATOR . <span>$id</span><span>;
</span><span>70</span> <span> }
</span><span>71</span> <span> }
</span><span>72</span> <span>protected</span> <span>function</span> parseActionParams(<span>$pathInfo</span><span>) {
</span><span>73</span> <span>if</span> ((<span>$pos</span> = <span>strpos</span> ( <span>$pathInfo</span>, '/' )) !== <span>false</span><span>) {
</span><span>74</span> <span>$manager</span> = <span>$this</span>->getUrlManager ();<span>//</span><span>再次获取urlManager,在上面第一次调用中已经导入。</span>
<span>75</span> <span>$manager</span>->parsePathInfo ( ( <span>string</span> ) <span>substr</span> ( <span>$pathInfo</span>, <span>$pos</span> + 1<span> ) );
</span><span>76</span> <span>$actionID</span> = <span>substr</span> ( <span>$pathInfo</span>, 0, <span>$pos</span><span> );
</span><span>77</span> <span>return</span> <span>$manager</span>->caseSensitive ? <span>$actionID</span> : <span>strtolower</span> ( <span>$actionID</span><span> );
</span><span>78</span> } <span>else</span>
<span>79</span> <span>return</span> <span>$pathInfo</span><span>;
</span><span>80</span> <span> }
</span><span>81</span> <span>public</span> <span>function</span><span> getControllerPath() {
</span><span>82</span> <span>if</span> (<span>$this</span>->_controllerPath !== <span>null</span><span>)
</span><span>83</span> <span>return</span> <span>$this</span>-><span>_controllerPath;
</span><span>84</span> <span>else</span>
<span>85</span> <span>return</span> <span>$this</span>->_controllerPath = <span>$this</span>->getBasePath () . DIRECTORY_SEPARATOR . 'controllers'<span>;
</span><span>86</span> <span> }
</span><span>87</span> <span>//</span><span>两个钩子,子类去实现</span>
<span>88</span> <span>public</span> <span>function</span> beforeControllerAction(<span>$controller</span>, <span>$action</span><span>) {
</span><span>89</span> <span>return</span> <span>true</span><span>;
</span><span>90</span> <span> }
</span><span>91</span> <span>public</span> <span>function</span> afterControllerAction(<span>$controller</span>, <span>$action</span><span>) {
</span><span>92</span> <span> }
</span><span>93</span> <span>protected</span> <span>function</span><span> init() {
</span><span>94</span> parent::<span>init ();
</span><span>95</span> <span> }
</span><span>96</span> }
$ca = $this->createController ( $route ))；createController的作用是将$route中的controller和action分离出来，并创建controller实例。
最后返回controller实例和actionid.
然后回到CWebApplication的runController($route),$controller->init ();在controller初始化时执行，这个需要在子类中重写，比如：
<span> 1</span> <span>class</span> VideoController <span>extends</span><span> CController {
</span><span> 2</span> <span>public</span> <span>function</span><span> init() {
</span><span> 3</span> <span>$this</span>->db = Yii::app ()-><span>db;
</span><span> 4</span> <span> }
</span><span> 5</span> <span>public</span> <span>function</span><span> actionBroadcast() {
</span><span> 6</span> <span>$b</span> = <span>$this</span>->db->query ( "", <span>array</span> (1<span> ) );
</span><span> 7</span> <span>$this</span>->render ( "u_broadcast", <span>array</span><span> (
</span><span> 8</span> 'b' => <span>$b</span> [0<span>] ；
</span><span> 9</span> <span> ) );
</span><span>10</span> <span> }
</span><span>11</span> }
这样在VideoController中便可以用$this->db调用db组件了。
$controller->run ( $actionID );转入Ccontroller.
<span> 1</span> <?<span>php
</span><span> 2</span> <span>class</span><span> CController {
</span><span> 3</span> <span>protected</span> <span>$db</span><span>;
</span><span> 4</span> <span>public</span> <span>$defaultAction</span> = 'index'<span>;
</span><span> 5</span> <span>private</span> <span>$_id</span><span>;
</span><span> 6</span> <span>private</span> <span>$_action</span><span>;
</span><span> 7</span> <span>public</span> <span>function</span> __construct(<span>$id</span>, <span>$module</span> = <span>null</span><span>) {
</span><span> 8</span> <span>$this</span>->_id = <span>$id</span><span>;
</span><span> 9</span> <span> }
</span><span>10</span> <span>public</span> <span>function</span><span> init() {
</span><span>11</span> <span> }
</span><span>12</span> <span>//</span><span>过滤方法,子类重写</span>
<span>13</span> <span>public</span> <span>function</span><span> filters() {
</span><span>14</span> <span>return</span> <span>array</span><span> ();
</span><span>15</span> <span> }
</span><span>16</span> <span>public</span> <span>function</span> run(<span>$actionID</span><span>) {
</span><span>17</span> <span>//</span><span>创建action实例</span>
<span>18</span> <span>if</span> ((<span>$action</span> = <span>$this</span>->createAction ( <span>$actionID</span> )) !== <span>null</span><span>) {
</span><span>19</span> <span>$parent</span> = Yii::<span>app ();
</span><span>20</span> <span>if</span> (<span>$parent</span>->beforeControllerAction ( <span>$this</span>, <span>$action</span><span> )) {
</span><span>21</span> <span>$this</span>->runActionWithFilters ( <span>$action</span>, <span>$this</span>-><span>filters () );
</span><span>22</span> <span>$parent</span>->afterControllerAction ( <span>$this</span>, <span>$action</span><span> );
</span><span>23</span> <span> }
</span><span>24</span> <span> }
</span><span>25</span> <span> }
</span><span>26</span> <span>public</span> <span>function</span> refresh(<span>$terminate</span> = <span>true</span>, <span>$anchor</span> = ''<span>) {
</span><span>27</span> <span>$this</span>->redirect ( Yii::app ()->getRequest ()->getUrl () . <span>$anchor</span>, <span>$terminate</span><span> );
</span><span>28</span> <span> }
</span><span>29</span> <span>public</span> <span>function</span> redirect(<span>$url</span>, <span>$terminate</span> = <span>true</span>, <span>$statusCode</span> = 302<span>) {
</span><span>30</span> Yii::app ()->getRequest ()->redirect ( <span>$url</span>, <span>$terminate</span>, <span>$statusCode</span><span> );
</span><span>31</span> <span> }
</span><span>32</span> <span>//</span><span>如果controller里面有filter</span>
<span>33</span> <span>public</span> <span>function</span> runActionWithFilters(<span>$action</span>, <span>$filters</span><span>) {
</span><span>34</span> <span>if</span> (<span>empty</span> ( <span>$filters</span><span> ))
</span><span>35</span> <span>$this</span>->runAction ( <span>$action</span><span> );
</span><span>36</span> <span>else</span><span> {
</span><span>37</span> <span>$priorAction</span> = <span>$this</span>-><span>_action;
</span><span>38</span> <span>$this</span>->_action = <span>$action</span><span>;
</span><span>39</span> CFilterChain::create ( <span>$this</span>, <span>$action</span>, <span>$filters</span> )-><span>run ();
</span><span>40</span> <span>$this</span>->_action = <span>$priorAction</span><span>;
</span><span>41</span> <span> }
</span><span>42</span> <span> }
</span><span>43</span> <span>public</span> <span>function</span> runAction(<span>$action</span><span>) {
</span><span>44</span> <span>$priorAction</span> = <span>$this</span>-><span>_action;
</span><span>45</span> <span>$this</span>->_action = <span>$action</span><span>;
</span><span>46</span> <span>if</span> (<span>$this</span>->beforeAction ( <span>$action</span><span> )) {
</span><span>47</span> <span>if</span> (<span>$action</span>->runWithParams ( <span>$this</span>->getActionParams () ) === <span>false</span><span>)
</span><span>48</span> <span>$this</span>->invalidActionParams ( <span>$action</span><span> );
</span><span>49</span> <span>else</span>
<span>50</span> <span>$this</span>->afterAction ( <span>$action</span><span> );
</span><span>51</span> <span> }
</span><span>52</span> <span>$this</span>->_action = <span>$priorAction</span><span>;
</span><span>53</span> <span> }
</span><span>54</span> <span>//</span><span>渲染视图</span>
<span>55</span> <span>public</span> <span>function</span> render(<span>$view</span>, <span>$data</span> = <span>array</span><span>()) {
</span><span>56</span> <span>if</span> (<span>isset</span> ( <span>$data</span><span> ))
</span><span>57</span> <span>extract</span> ( <span>$data</span><span> );
</span><span>58</span> <span>include</span> VIEWS_DIR . "/" . <span>$this</span>->_id . "/" . <span>$view</span> . ".php"<span>;
</span><span>59</span> <span> }
</span><span>60</span> <span>public</span> <span>function</span> renderFile(<span>$file</span>, <span>$data</span> = <span>array</span><span>()) {
</span><span>61</span> <span>if</span> (<span>isset</span> ( <span>$data</span><span> ))
</span><span>62</span> <span>extract</span> ( <span>$data</span><span> );
</span><span>63</span> <span>include</span> VIEWS_DIR . "/" . <span>$file</span><span>;
</span><span>64</span> <span> }
</span><span>65</span> <span>//</span><span>跳转到另一个controller/action,不过浏览器的地址没有变</span>
<span>66</span> <span>public</span> <span>function</span> forward(<span>$route</span><span>) {
</span><span>67</span> <span>if</span> (<span>strpos</span> ( <span>$route</span>, '/' ) === <span>false</span><span>)
</span><span>68</span> <span>$this</span>->run ( <span>$route</span><span> );
</span><span>69</span> <span>else</span><span> {
</span><span>70</span> <span>//</span><span>不在同一个controller里面，重新创建</span>
<span>71</span> Yii::app ()->runController ( <span>$route</span><span> );
</span><span>72</span> <span> }
</span><span>73</span> <span> }
</span><span>74</span> <span>public</span> <span>function</span><span> getActionParams() {
</span><span>75</span> <span>return</span> <span>$_GET</span><span>;
</span><span>76</span> <span> }
</span><span>77</span> <span>public</span> <span>function</span> createAction(<span>$actionID</span><span>) {
</span><span>78</span> <span>if</span> (<span>$actionID</span> === ''<span>)
</span><span>79</span> <span>$actionID</span> = <span>$this</span>-><span>defaultAction;
</span><span>80</span> <span>if</span> (<span>method_exists</span> ( <span>$this</span>, 'action' . <span>$actionID</span> ) && <span>strcasecmp</span> ( <span>$actionID</span>, 's'<span> ))
</span><span>81</span> <span>return</span> <span>new</span> CInlineAction ( <span>$this</span>, <span>$actionID</span><span> );
</span><span>82</span> <span> }
</span><span>83</span> <span>public</span> <span>function</span><span> getAction() {
</span><span>84</span> <span>return</span> <span>$this</span>-><span>_action;
</span><span>85</span> <span> }
</span><span>86</span> <span>public</span> <span>function</span> setAction(<span>$value</span><span>) {
</span><span>87</span> <span>$this</span>->_action = <span>$value</span><span>;
</span><span>88</span> <span> }
</span><span>89</span> <span>public</span> <span>function</span><span> getId() {
</span><span>90</span> <span>return</span> <span>$this</span>-><span>_id;
</span><span>91</span> <span> }
</span><span>92</span> <span>//</span><span>两个钩子</span>
<span>93</span> <span>protected</span> <span>function</span> beforeAction(<span>$action</span><span>) {
</span><span>94</span> <span>return</span> <span>true</span><span>;
</span><span>95</span> <span> }
</span><span>96</span> <span>protected</span> <span>function</span> afterAction(<span>$action</span><span>) {
</span><span>97</span> <span> }
</span><span>98</span> }
$this->createAction ( $actionID );创建action实例.
然后是runActionWithFilters($action, $filters)；如果没有filter(),直接runAction($action)。
$action->runWithParams ( $this->getActionParams () ).$action是CInlineAction实例。
<span> 1</span> <?<span>php
</span><span> 2</span> <span>class</span> CInlineAction <span>extends</span><span> CAction
</span><span> 3</span> <span>{
</span><span> 4</span> <span>//</span><span>执行该动作</span>
<span> 5</span> <span>public</span> <span>function</span><span> run()
</span><span> 6</span> <span> {
</span><span> 7</span> <span>$method</span>='action'.<span>$this</span>-><span>getId();
</span><span> 8</span> <span>$this</span>->getController()-><span>$method</span><span>();
</span><span> 9</span> <span> }
</span><span>10</span> <span>//</span><span>执行带提供的请求的参数的动作</span>
<span>11</span> <span>public</span> <span>function</span> runWithParams(<span>$params</span><span>)
</span><span>12</span> <span> {
</span><span>13</span> <span>$methodName</span>='action'.<span>$this</span>->getId();<span>//</span><span>拼接action方法</span>
<span>14</span> <span>$controller</span>=<span>$this</span>-><span>getController();
</span><span>15</span> <span>$method</span>=<span>new</span> ReflectionMethod(<span>$controller</span>, <span>$methodName</span>);<span>//</span><span>反射</span>
<span>16</span> <span>if</span>(<span>$method</span>->getNumberOfParameters()>0)<span>//</span><span>方法参数个数>0</span>
<span>17</span> <span>return</span> <span>$this</span>->runWithParamsInternal(<span>$controller</span>, <span>$method</span>, <span>$params</span><span>);
</span><span>18</span> <span>else</span>
<span>19</span> <span>return</span> <span>$controller</span>-><span>$methodName</span><span>();
</span><span>20</span> <span> }
</span><span>21</span> }
CAction
<span> 1</span> <?<span>php
</span><span> 2</span> <span>abstract</span> <span>class</span> CAction <span>extends</span><span> CComponent
</span><span> 3</span> <span>{
</span><span> 4</span> <span>private</span> <span>$_id</span><span>;
</span><span> 5</span> <span>private</span> <span>$_controller</span><span>;
</span><span> 6</span> <span>public</span> <span>function</span> __construct(<span>$controller</span>,<span>$id</span><span>)
</span><span> 7</span> <span> {
</span><span> 8</span> <span>$this</span>->_controller=<span>$controller</span><span>;
</span><span> 9</span> <span>$this</span>->_id=<span>$id</span><span>;
</span><span>10</span> <span> }
</span><span>11</span> <span>public</span> <span>function</span><span> getController()
</span><span>12</span> <span> {
</span><span>13</span> <span>return</span> <span>$this</span>-><span>_controller;
</span><span>14</span> <span> }
</span><span>15</span> <span>public</span> <span>function</span><span> getId()
</span><span>16</span> <span> {
</span><span>17</span> <span>return</span> <span>$this</span>-><span>_id;
</span><span>18</span> <span> }
</span><span>19</span> <span>//</span><span>运行带有请求参数的对象。 这个方法通过CController::runAction()内部调用</span>
<span>20</span> <span>public</span> <span>function</span> runWithParams(<span>$params</span><span>)
</span><span>21</span> <span> {
</span><span>22</span> <span>$method</span>=<span>new</span> ReflectionMethod(<span>$this</span>, 'run'<span>);
</span><span>23</span> <span>if</span>(<span>$method</span>->getNumberOfParameters()>0<span>)
</span><span>24</span> <span>return</span> <span>$this</span>->runWithParamsInternal(<span>$this</span>, <span>$method</span>, <span>$params</span><span>);
</span><span>25</span> <span>else</span>
<span>26</span> <span>return</span> <span>$this</span>-><span>run();
</span><span>27</span> <span> }
</span><span>28</span> <span>//</span><span>执行一个带有命名参数的对象的方法</span>
<span>29</span> <span>protected</span> <span>function</span> runWithParamsInternal(<span>$object</span>, <span>$method</span>, <span>$params</span><span>)
</span><span>30</span> <span> {
</span><span>31</span> <span>$ps</span>=<span>array</span><span>();
</span><span>32</span> <span>foreach</span>(<span>$method</span>->getParameters() <span>as</span> <span>$i</span>=><span>$param</span><span>)
</span><span>33</span> <span> {
</span><span>34</span> <span>$name</span>=<span>$param</span>-><span>getName();
</span><span>35</span> <span>if</span>(<span>isset</span>(<span>$params</span>[<span>$name</span><span>]))
</span><span>36</span> <span> {
</span><span>37</span> <span>if</span>(<span>$param</span>-><span>isArray())
</span><span>38</span> <span>$ps</span>[]=<span>is_array</span>(<span>$params</span>[<span>$name</span>]) ? <span>$params</span>[<span>$name</span>] : <span>array</span>(<span>$params</span>[<span>$name</span><span>]);
</span><span>39</span> <span>elseif</span>(!<span>is_array</span>(<span>$params</span>[<span>$name</span><span>]))
</span><span>40</span> <span>$ps</span>[]=<span>$params</span>[<span>$name</span><span>];
</span><span>41</span> <span>else</span>
<span>42</span> <span>return</span> <span>false</span><span>;
</span><span>43</span> <span> }
</span><span>44</span> <span>elseif</span>(<span>$param</span>-><span>isDefaultValueAvailable())
</span><span>45</span> <span>$ps</span>[]=<span>$param</span>-><span>getDefaultValue();
</span><span>46</span> <span>else</span>
<span>47</span> <span>return</span> <span>false</span><span>;
</span><span>48</span> <span> }
</span><span>49</span> <span>$method</span>->invokeArgs(<span>$object</span>,<span>$ps</span>);<span>//</span><span>反射，执行</span>
<span>50</span> <span>return</span> <span>true</span><span>;
</span><span>51</span> <span> }
</span><span>52</span> }
这两个类都很简单，就是执行controller类中的action方法。
回到上面的runActionWithFilters($action, $filters)；如果有filter(),CFilterChain::create ( $this, $action, $filters )->run ();
显然，如果有filter的话必须在执行action方法前，就设置好filter过滤器列表。
CFilterChain就是将类似于'application.filters.LoginFilter+upload_video' 这种配置解析成过滤器链。
过滤器链的每一项是一个CInlineFilter或CFilter实例。
<span> 1</span> <?<span>php
</span><span> 2</span> <span>//</span><span>过滤器列表</span>
<span> 3</span> <span>class</span> CFilterChain <span>extends</span><span> CList {
</span><span> 4</span> <span>public</span> <span>$controller</span><span>;
</span><span> 5</span> <span>public</span> <span>$action</span><span>;
</span><span> 6</span> <span>public</span> <span>$filterIndex</span> = 0<span>;
</span><span> 7</span> <span>public</span> <span>function</span> __construct(<span>$controller</span>, <span>$action</span><span>) {
</span><span> 8</span> <span>$this</span>->controller = <span>$controller</span><span>;
</span><span> 9</span> <span>$this</span>->action = <span>$action</span><span>;
</span><span>10</span> <span> }
</span><span>11</span> <span>//</span><span>创建过滤器列表</span>
<span>12</span> <span>public</span> <span>static</span> <span>function</span> create(<span>$controller</span>, <span>$action</span>, <span>$filters</span><span>) {
</span><span>13</span> <span>$chain</span> = <span>new</span> CFilterChain ( <span>$controller</span>, <span>$action</span><span> );
</span><span>14</span> <span>$actionID</span> = <span>$action</span>-><span>getId ();
</span><span>15</span> <span>foreach</span> ( <span>$filters</span> <span>as</span> <span>$filter</span><span> ) {
</span><span>16</span> <span>if</span> (<span>is_string</span> ( <span>$filter</span> )) <span>//</span><span> filterName [+|- action1 action2]</span>
<span>17</span> <span> {
</span><span>18</span> <span>if</span> ((<span>$pos</span> = <span>strpos</span> ( <span>$filter</span>, '+' )) !== <span>false</span> || (<span>$pos</span> = <span>strpos</span> ( <span>$filter</span>, '-' )) !== <span>false</span><span>) {
</span><span>19</span> <span>$matched</span> = <span>preg_match</span> ( "/\b{<span>$actionID</span>}\b/i", <span>substr</span> ( <span>$filter</span>, <span>$pos</span> + 1 ) ) > 0<span>;
</span><span>20</span> <span>if</span> ((<span>$filter</span> [<span>$pos</span>] === '+') === <span>$matched</span><span>)
</span><span>21</span> <span>$filter</span> = CInlineFilter::create ( <span>$controller</span>, <span>trim</span> ( <span>substr</span> ( <span>$filter</span>, 0, <span>$pos</span><span> ) ) );
</span><span>22</span> } <span>else</span>
<span>23</span> <span>$filter</span> = CInlineFilter::create ( <span>$controller</span>, <span>$filter</span><span> );
</span><span>24</span> } <span>elseif</span> (<span>is_array</span> ( <span>$filter</span> )) <span>//</span><span> array('path.to.class [+|- action1, action2]','param1'=>'value1',...)</span>
<span>25</span> <span> {
</span><span>26</span> <span>$filterClass</span> = <span>$filter</span> [0<span>];
</span><span>27</span> <span>unset</span> ( <span>$filter</span> [0<span>] );
</span><span>28</span> <span>//</span><span>开始解析过滤器配置</span>
<span>29</span> <span>if</span> ((<span>$pos</span> = <span>strpos</span> ( <span>$filterClass</span>, '+' )) !== <span>false</span> || (<span>$pos</span> = <span>strpos</span> ( <span>$filterClass</span>, '-' )) !== <span>false</span><span>) {
</span><span>30</span> <span>preg_match</span> ( "/\b{<span>$actionID</span>}\b/i", <span>substr</span> ( <span>$filterClass</span>, <span>$pos</span> + 1 ), <span>$a</span><span> );
</span><span>31</span> <span>$matched</span> = <span>preg_match</span> ( "/\b{<span>$actionID</span>}\b/i", <span>substr</span> ( <span>$filterClass</span>, <span>$pos</span> + 1 ) ) > 0<span>;
</span><span>32</span> <span>//</span><span>如果是filterName+action，创建一个过滤器,否则忽略</span>
<span>33</span> <span>if</span> ((<span>$filterClass</span> [<span>$pos</span>] === '+') === <span>$matched</span><span>) {
</span><span>34</span> <span>//</span><span>解析出过滤器的类名</span>
<span>35</span> <span>$filterClass</span> = <span>trim</span> ( <span>substr</span> ( <span>$filterClass</span>, 0, <span>$pos</span><span> ) );
</span><span>36</span> } <span>else</span>
<span>37</span> <span>continue</span><span>;
</span><span>38</span> <span> }
</span><span>39</span> <span>$filter</span> ['class'] = <span>$filterClass</span><span>;
</span><span>40</span> <span>$filter</span> = Yii::createComponent ( <span>$filter</span><span> );
</span><span>41</span> <span> }
</span><span>42</span>
<span>43</span> <span>if</span> (<span>is_object</span> ( <span>$filter</span><span> )) {
</span><span>44</span> <span>$filter</span>-><span>init ();
</span><span>45</span> <span>$chain</span>->add ( <span>$filter</span> );<span>//</span><span>list添加过滤器</span>
<span>46</span> <span> }
</span><span>47</span> <span> }
</span><span>48</span> <span>return</span> <span>$chain</span><span>;
</span><span>49</span> <span> }
</span><span>50</span> <span>public</span> <span>function</span><span> run() {
</span><span>51</span> <span>if</span> (<span>$this</span>->offsetExists ( <span>$this</span>->filterIndex )) {<span>//</span><span>过滤器列表个数不为0
</span><span>52</span> <span> //取出过滤器实例</span>
<span>53</span> <span>$filter</span> = <span>$this</span>->itemAt ( <span>$this</span>->filterIndex ++<span> );
</span><span>54</span> <span>$filter</span>->filter ( <span>$this</span><span> );
</span><span>55</span> } <span>else</span>
<span>56</span> <span>$this</span>->controller->runAction ( <span>$this</span>-><span>action );
</span><span>57</span> <span> }
</span><span>58</span> }
'application.filters.LoginFilter+upload_video' 这种配置会创建CFilter实例。
<span> 1</span> <?<span>php
</span><span> 2</span> <span>class</span> CFilter <span>extends</span><span> CComponent {
</span><span> 3</span> <span>public</span> <span>function</span> filter(<span>$filterChain</span><span>) {
</span><span> 4</span> <span>//</span><span>前置，后置方法</span>
<span> 5</span> <span>if</span> (<span>$this</span>->preFilter ( <span>$filterChain</span><span> )) {
</span><span> 6</span> <span>$filterChain</span>-><span>run ();
</span><span> 7</span> <span>$this</span>->postFilter ( <span>$filterChain</span><span> );
</span><span> 8</span> <span> }
</span><span> 9</span> <span> }
</span><span>10</span> <span>//</span><span>钩子</span>
<span>11</span> <span>public</span> <span>function</span><span> init() {
</span><span>12</span> <span> }
</span><span>13</span> <span>protected</span> <span>function</span> preFilter(<span>$filterChain</span><span>) {
</span><span>14</span> <span>return</span> <span>true</span><span>;
</span><span>15</span> <span> }
</span><span>16</span> <span>protected</span> <span>function</span> postFilter(<span>$filterChain</span><span>) {
</span><span>17</span> <span> }
</span><span>18</span> }
然后是上面的CFilterChain::create ( $this, $action, $filters )->run ();中的run(),如果请求被解析成的action是upload_video,yii就会取出LoginFilter实例。
比如我的LoginFilter
<span> 1</span> <?<span>php
</span><span> 2</span> <span>class</span> LoginFilter <span>extends</span><span> CFilter {
</span><span> 3</span> <span>protected</span> <span>function</span> preFilter(<span>$filterChain</span><span>) {
</span><span> 4</span> <span>if</span> (! <span>isset</span> ( <span>$_SESSION</span><span> )) {
</span><span> 5</span> <span>session_start</span><span> ();
</span><span> 6</span> <span> }
</span><span> 7</span> <span>if</span> (<span>isset</span> ( <span>$_SESSION</span> ['user'<span>] ))
</span><span> 8</span> <span>return</span> <span>true</span><span>;
</span><span> 9</span> <span>else</span><span> {
</span><span>10</span> <span>setcookie</span> ( "return", Yii::app ()->getRequest ()->getUrl (), <span>time</span> () + 360, '/'<span> );
</span><span>11</span> Yii::app ()->getRequest ()->redirect ( 'http://localhost/youtube/login', <span>true</span>, 302<span> );
</span><span>12</span> <span>return</span> <span>false</span><span>;
</span><span>13</span> <span> }
</span><span>14</span> <span> }
</span><span>15</span> <span>protected</span> <span>function</span> postFilter(<span>$filterChain</span><span>) {
</span><span>16</span> <span> }
</span><span>17</span> <span>}
</span><span>18</span> ?>
里面就一个前置和后置，表示对于需要启用过滤器的action方法，分别在执行action方法之前和之后执行自己定义的preFilter,postFilter方法。
然后是$filterChain->run ();这里很容易出错。
其实是再次用CFilterChain里面的run(),注意到里面的$this->filterIndex++,这有点像递归.
如果过滤器要过滤对个action,就像这样去CFilter,然后$filterChain->run ();返回CFilterChain，同时$this->filterIndex++,然后继续$filterChain->run ();。。。。。。
对于我的'application.filters.LoginFilter+upload_video'，只过滤upload_video这一个action,所以当返回CFilterChain时，$this->filterIndex已经变成1了，而过滤器列表只有一个过滤器实例，所以这次就会走$this->controller->runAction ( $this->action );了，这就和没设置过滤器时走的$this->runAction ( $action );一样了。
过滤器分析完后，就是什么数据操作之类的，最后是渲染视图render()。这就太简单了，extract($data),然后在include下视图文件就可以了。
还有forward()方法，就是跳转到另一个controller/action,实质就是返回CWebApplication的runController再来一遍上面分析的过程。
最后附上，裁剪的yii http://files.cnblogs.com/TheViper/framework.zip
Kenyataan
Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. Jika anda menemui sebarang kandungan yang disyaki plagiarisme atau pelanggaran, sila hubungi admin@php.cn
Terangkan bagaimana pengimbangan beban mempengaruhi pengurusan sesi dan bagaimana mengatasinya.Apr 29, 2025 am 12:42 AMBeban mengimbangi mempengaruhi pengurusan sesi, tetapi dapat diselesaikan dengan replikasi sesi, ketegangan sesi, dan penyimpanan sesi berpusat. 1. Sesi Replikasi Salinan Data Sesi Antara Pelayan. 2. Sesi Stickiness mengarahkan permintaan pengguna ke pelayan yang sama. 3. Penyimpanan Sesi Pusat menggunakan pelayan bebas seperti Redis untuk menyimpan data sesi untuk memastikan perkongsian data.
Terangkan konsep penguncian sesi.Apr 29, 2025 am 12:39 AMSessionlockingisatechniqueusedtoensureauserererersessionremainsexclusivetooneuseratatime.IScrucialFreventingDataCorruptionSandsecuritybreachesinmulti-userapplications.SessionLockingISimplementedusingserverververveChan
Adakah terdapat alternatif untuk sesi PHP?Apr 29, 2025 am 12:36 AMAlternatif untuk sesi PHP termasuk kuki, pengesahan berasaskan token, sesi berasaskan pangkalan data, dan redis/memcached. 1.Cookies Menguruskan sesi dengan menyimpan data pada klien, yang mudah tetapi rendah dalam keselamatan. 2. Pengesahan berasaskan token menggunakan token untuk mengesahkan pengguna, yang sangat selamat tetapi memerlukan logik tambahan. 3.Database-berasaskan data menyimpan data dalam pangkalan data, yang mempunyai skalabilitas yang baik tetapi boleh menjejaskan prestasi. 4. Redis/Memcached menggunakan cache yang diedarkan untuk meningkatkan prestasi dan skalabiliti, tetapi memerlukan pemadanan tambahan
Tentukan istilah 'sesi rampasan' dalam konteks PHP.Apr 29, 2025 am 12:33 AMSessionHijacking merujuk kepada penyerang yang menyamar sebagai pengguna dengan mendapatkan sessionId pengguna. Kaedah pencegahan termasuk: 1) menyulitkan komunikasi menggunakan HTTPS; 2) mengesahkan sumber sessionId; 3) menggunakan algoritma generasi sesi yang selamat; 4) Secara kerap mengemas kini sessionId.
Apakah bentuk penuh PHP?Apr 28, 2025 pm 04:58 PMArtikel ini membincangkan PHP, memperincikan bentuk penuhnya, kegunaan utama dalam pembangunan web, perbandingan dengan Python dan Java, dan kemudahan pembelajarannya untuk pemula.
Bagaimanakah PHP mengendalikan data borang?Apr 28, 2025 pm 04:57 PMPHP mengendalikan data borang menggunakan $ \ _ post dan $ \ _ mendapatkan superglobals, dengan keselamatan memastikan melalui pengesahan, sanitisasi, dan interaksi pangkalan data yang selamat.
Apakah perbezaan antara PHP dan ASP.NET?Apr 28, 2025 pm 04:56 PMArtikel ini membandingkan PHP dan ASP.NET, memberi tumpuan kepada kesesuaian mereka untuk aplikasi web berskala besar, perbezaan prestasi, dan ciri keselamatan. Kedua-duanya berdaya maju untuk projek besar, tetapi PHP adalah sumber terbuka dan bebas platform, sementara ASP.NET,
Adakah PHP adalah bahasa sensitif kes?Apr 28, 2025 pm 04:55 PMKepekaan kes PHP berbeza -beza: Fungsi tidak sensitif, manakala pembolehubah dan kelas sensitif. Amalan terbaik termasuk penamaan yang konsisten dan menggunakan fungsi kes-insensitif untuk perbandingan.
Alat AI Hot
Undresser.AI Undress
Apl berkuasa AI untuk mencipta foto bogel yang realistik
AI Clothes Remover
Alat AI dalam talian untuk mengeluarkan pakaian daripada foto.
Undress AI Tool
Gambar buka pakaian secara percuma
Clothoff.io
Penyingkiran pakaian AI
Video Face Swap
Tukar muka dalam mana-mana video dengan mudah menggunakan alat tukar muka AI percuma kami!
Artikel Panas
Apa yang Baru di Windows 11 KB5054979 & Cara Memperbaiki Masalah Kemas Kini
3 minggu yang laluByDDD
Bagaimana untuk memperbaiki KB5055523 gagal dipasang di Windows 11?
2 minggu yang laluByDDD
Inzoi: Cara Memohon ke Sekolah dan Universiti
3 minggu yang laluByDDD
Bagaimana untuk memperbaiki KB5055518 gagal dipasang di Windows 10?
2 minggu yang laluByDDD
Roblox: Rails Dead - Cara Memanggil dan Mengalahkan Nikola Tesla
4 minggu yang laluBy尊渡假赌尊渡假赌尊渡假赌
Alat panas
Notepad++7.3.1
Editor kod yang mudah digunakan dan percuma
SublimeText3 Linux versi baharu
SublimeText3 Linux versi terkini
Versi Mac WebStorm
Alat pembangunan JavaScript yang berguna
MinGW - GNU Minimalis untuk Windows
Projek ini dalam proses untuk dipindahkan ke osdn.net/projects/mingw, anda boleh terus mengikuti kami di sana. MinGW: Port Windows asli bagi GNU Compiler Collection (GCC), perpustakaan import yang boleh diedarkan secara bebas dan fail pengepala untuk membina aplikasi Windows asli termasuk sambungan kepada masa jalan MSVC untuk menyokong fungsi C99. Semua perisian MinGW boleh dijalankan pada platform Windows 64-bit.
PhpStorm versi Mac
Alat pembangunan bersepadu PHP profesional terkini (2018.2.1).
