yii source code analysis 3, yii source code analysis

Table of Contents

Home

Backend Development

PHP Tutorial

yii source code analysis 3, yii source code analysis_PHP tutorial

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jul 13, 2016 am 10:14 AM

yii

yii source code analysis 3, yii source code analysis

Please indicate: TheViper http://www.cnblogs.com/TheViper/

The previous article talked about ￥route=$this->getUrlManager ()->parseUrl ($this->getRequest()); in CWebApplication, and got $route=controler/actionid.

This article talks about $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> }

Copy after login

$ca = $this->createController ($route)); The function of createController is to separate the controller and action in $route and create a controller instance.

Finally return the controller instance and actionid.

Then go back to CWebApplication's runController($route), $controller->init (); to be executed when the controller is initialized. This needs to be rewritten in the subclass, such as:

<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> }

Copy after login

In this way, you can use $this->db to call the db component in VideoController.

$controller->run ( $actionID ); transfer to 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> }

Copy after login

$this->createAction ( $actionID ); Create an action instance.

Then runActionWithFilters($action, $filters); if there is no filter(), directly runAction($action).

$action->runWithParams ( $this->getActionParams () ).$action is a CInlineAction instance.

<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> }

Copy after login

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> }

Copy after login

These two classes are very simple, they just execute the action method in the controller class.

Go back to runActionWithFilters($action, $filters) above; if there is filter(), CFilterChain::create ( $this, $action, $filters )->run ();

Obviously, if there is a filter, the filter list must be set before executing the action method.

CFilterChain parses a configuration similar to 'application.filters.LoginFilter+upload_video' into a filter chain.

Each item in the filter chain is a CInlineFilter or CFilter instance.

<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> }

Copy after login

'application.filters.LoginFilter+upload_video' This configuration will create a CFilter instance.

<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> }

Copy after login

Then there is run() in CFilterChain::create ($this, $action, $filters)->run (); above. If the action parsed into by the request is upload_video, yii will take out the LoginFilter instance .

For example, my 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> ?>

Copy after login

There is a prefix and a postfix inside, which means that for the action method that needs to enable the filter, execute the self-defined preFilter and postFilter methods before and after executing the action method respectively.

Then $filterChain->run (); it’s easy to make mistakes here.

In fact, I used run() in CFilterChain again and noticed $this->filterIndex++ inside, which is a bit like recursion.

If the filter wants to filter an action, go to CFilter like this, then $filterChain->run (); return to CFilterChain, and $this->filterIndex++, and then continue $filterChain->run (); . . . . . .

For my 'application.filters.LoginFilter+upload_video', only the upload_video action is filtered, so when CFilterChain is returned, $this->filterIndex has become 1, and the filter list has only one filter instance. , so this time it will go to $this->controller->runAction ( $this->action );, which is the same as $this->runAction ( $action ); when no filter is set. .

After the filter is analyzed, there are some data operations and the like, and finally the rendering view render(). This is too simple, extract($data), and then include the view file.

There is also the forward() method, which is to jump to another controller/action. The essence is to return to the runController of CWebApplication and repeat the above analysis process.

At last, the cropped yii http://files.cnblogs.com/TheViper/framework.zip

in CWebApplication

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

Assassin's Creed Shadows: Seashell Riddle Solution

3 weeks ago By DDD

What's New in Windows 11 KB5054979 & How to Fix Update Issues

2 weeks ago By DDD

Where to find the Crane Control Keycard in Atomfall

3 weeks ago By DDD

Saving in R.E.P.O. Explained (And Save Files)

1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Assassin's Creed Shadows - How To Find The Blacksmith And Unlock Weapon And Armour Customisation

4 weeks ago By DDD

Hot Tools

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Where is the login entrance for gmail email?

7569

CakePHP Tutorial

1386

What is the format of the account name of steam

win11 activation key permanent

nyt connections hints and answers

107

Related knowledge

How to use PHP framework Yii to develop a highly available cloud backup system Jun 27, 2023 am 09:04 AM

With the continuous development of cloud computing technology, data backup has become something that every enterprise must do. In this context, it is particularly important to develop a highly available cloud backup system. The PHP framework Yii is a powerful framework that can help developers quickly build high-performance web applications. The following will introduce how to use the Yii framework to develop a highly available cloud backup system. Designing the database model In the Yii framework, the database model is a very important part. Because the data backup system requires a lot of tables and relationships

Symfony vs Yii2: Which framework is better for developing large-scale web applications? Jun 19, 2023 am 10:57 AM

As the demand for web applications continues to grow, developers have more and more choices in choosing development frameworks. Symfony and Yii2 are two popular PHP frameworks. They both have powerful functions and performance, but when faced with the need to develop large-scale web applications, which framework is more suitable? Next we will conduct a comparative analysis of Symphony and Yii2 to help you make a better choice. Basic Overview Symphony is an open source web application framework written in PHP and is built on

Data query in Yii framework: access data efficiently Jun 21, 2023 am 11:22 AM

The Yii framework is an open source PHP Web application framework that provides numerous tools and components to simplify the process of Web application development, of which data query is one of the important components. In the Yii framework, we can use SQL-like syntax to access the database to query and manipulate data efficiently. The query builder of the Yii framework mainly includes the following types: ActiveRecord query, QueryBuilder query, command query and original SQL query

How to use Yii3 framework in php? May 31, 2023 pm 10:42 PM

As the Internet continues to develop, the demand for web application development is also getting higher and higher. For developers, developing applications requires a stable, efficient, and powerful framework, which can improve development efficiency. Yii is a leading high-performance PHP framework that provides rich features and good performance. Yii3 is the next generation version of the Yii framework, which further optimizes performance and code quality based on Yii2. In this article, we will introduce how to use Yii3 framework to develop PHP applications.

Yii2 vs Phalcon: Which framework is better for developing graphics rendering applications? Jun 19, 2023 am 08:09 AM

In the current information age, big data, artificial intelligence, cloud computing and other technologies have become the focus of major enterprises. Among these technologies, graphics card rendering technology, as a high-performance graphics processing technology, has received more and more attention. Graphics card rendering technology is widely used in game development, film and television special effects, engineering modeling and other fields. For developers, choosing a framework that suits their projects is a very important decision. Among current languages, PHP is a very dynamic language. Some excellent PHP frameworks such as Yii2, Ph

Yii2 Programming Guide: How to run Cron service Sep 01, 2023 pm 11:21 PM

If you're asking "What is Yii?" check out my previous tutorial: Introduction to the Yii Framework, which reviews the benefits of Yii and outlines what's new in Yii 2.0, released in October 2014. Hmm> In this Programming with Yii2 series, I will guide readers in using the Yii2PHP framework. In today's tutorial, I will share with you how to leverage Yii's console functionality to run cron jobs. In the past, I've used wget - a web-accessible URL - in a cron job to run my background tasks. This raises security concerns and has some performance issues. While I discussed some ways to mitigate the risk in our Security for Startup series, I had hoped to transition to console-driven commands

PHP development: Use Yii2 and GrapeJS to implement back-end CMS and front-end visual editing Jun 15, 2023 pm 11:48 PM

In modern software development, building a powerful content management system (CMS) is not an easy task. Not only do developers need to have extensive skills and experience, but they also need to use the most advanced technologies and tools to optimize their functionality and performance. This article introduces how to use Yii2 and GrapeJS, two popular open source software, to implement back-end CMS and front-end visual editing. Yii2 is a popular PHPWeb framework that provides rich tools and components to quickly build

How to convert yii objects into arrays or directly output to json format Jan 08, 2021 am 10:13 AM

Yii framework: This article introduces Yii's method of converting objects into arrays or directly outputting them into json format. It has certain reference value and I hope it can help you.

See all articles