android源码学习 yii2源码学习笔记十九)
view剩余代码
<span> 1</span><span>/*</span><span>* </span><span> 2</span><span> * @return string|boolean the view file currently being rendered. False if no view file is being rendered. </span><span> 3</span><span> * 当前正在渲染的视图文件 </span><span> 4</span><span>*/</span><span> 5</span><span>public</span><span> function getViewFile() </span><span> 6</span><span> { </span><span> 7</span><span>return</span> end($<span>this</span>-><span>_viewFiles); </span><span> 8</span><span> } </span><span> 9</span><span> 10</span><span>/*</span><span>* </span><span> 11</span><span> * This method is invoked right before [[renderFile()]] renders a view file. </span><span> 12</span><span> * The default implementation will trigger the [[EVENT_BEFORE_RENDER]] event. </span><span> 13</span><span> * 前置事件,执行[renderFile()]时被调用,默认触发[[EVENT_BEFORE_RENDER]]事件 </span><span> 14</span><span> * If you override this method, make sure you call the parent implementation first. </span><span> 15</span><span> * @param string $viewFile the view file to be rendered. 要渲染的视图文件。 </span><span> 16</span><span> * @param array $params the parameter array passed to the [[render()]] method. </span><span> 17</span><span> * 参数数组传递到[render()]方法。 </span><span> 18</span><span> * @return boolean whether to continue rendering the view file. 是否继续渲染视图文件。 </span><span> 19</span><span>*/</span><span> 20</span><span>public</span> function beforeRender($viewFile, $<span>params</span><span>) </span><span> 21</span><span> { </span><span> 22</span> $<span>event</span> = <span>new</span> ViewEvent([<span>//</span><span>实例化ViewEvent</span><span> 23</span><span>'</span><span>viewFile</span><span>'</span> =><span> $viewFile, </span><span> 24</span><span>'</span><span>params</span><span>'</span> => $<span>params</span><span>, </span><span> 25</span><span> ]); </span><span> 26</span> $<span>this</span>->trigger(self::EVENT_BEFORE_RENDER, $<span>event</span>);<span>//</span><span>触发[EVENT_BEFORE_RENDER]事件</span><span> 27</span><span> 28</span><span>return</span> $<span>event</span>->isValid;<span>//</span><span>判断是否继续渲染文件</span><span> 29</span><span> } </span><span> 30</span><span> 31</span><span>/*</span><span>* </span><span> 32</span><span> * This method is invoked right after [[renderFile()]] renders a view file. </span><span> 33</span><span> * The default implementation will trigger the [[EVENT_AFTER_RENDER]] event. </span><span> 34</span><span> * 后置事件,在执行[renderFile()]方法后被调用,默认触发[[EVENT_AFTER_RENDER]]事件 </span><span> 35</span><span> * If you override this method, make sure you call the parent implementation first. </span><span> 36</span><span> * @param string $viewFile the view file being rendered.要渲染的视图文件。 </span><span> 37</span><span> * @param array $params the parameter array passed to the [[render()]] method. </span><span> 38</span><span> * 参数数组传递到[render()]方法。 </span><span> 39</span><span> * @param string $output the rendering result of the view file. Updates to this parameter </span><span> 40</span><span> * will be passed back and returned by [[renderFile()]]. </span><span> 41</span><span> * 返回视图渲染的结果 </span><span> 42</span><span>*/</span><span> 43</span><span>public</span> function afterRender($viewFile, $<span>params</span>, &<span>$output) </span><span> 44</span><span> { </span><span> 45</span><span>if</span> ($<span>this</span>->hasEventHandlers(self::EVENT_AFTER_RENDER)) {<span>//</span><span>判断[EVENT_AFTER_RENDER]事件是否存在</span><span> 46</span> $<span>event</span> = <span>new</span><span> ViewEvent([ </span><span> 47</span><span>'</span><span>viewFile</span><span>'</span> =><span> $viewFile, </span><span> 48</span><span>'</span><span>params</span><span>'</span> => $<span>params</span><span>, </span><span> 49</span><span>'</span><span>output</span><span>'</span> =><span> $output, </span><span> 50</span><span> ]); </span><span> 51</span><span>//</span><span>触发[EVENT_AFTER_RENDER]事件</span><span> 52</span> $<span>this</span>->trigger(self::EVENT_AFTER_RENDER, $<span>event</span><span>); </span><span> 53</span> $output = $<span>event</span>->output;<span>//</span><span>返回结果</span><span> 54</span><span> } </span><span> 55</span><span> } </span><span> 56</span><span> 57</span><span>/*</span><span>* </span><span> 58</span><span> * Renders a view file as a PHP script. </span><span> 59</span><span> * 返回一个视图文件当作PHP脚本 </span><span> 60</span><span> * This method treats the view file as a PHP script and includes the file. </span><span> 61</span><span> * It extracts the given parameters and makes them available in the view file. </span><span> 62</span><span> * The method captures the output of the included view file and returns it as a string. </span><span> 63</span><span> * 将传入的参数转换为变量,包含并执行view文件,返回执行结果 </span><span> 64</span><span> * This method should mainly be called by view renderer or [[renderFile()]]. </span><span> 65</span><span> * </span><span> 66</span><span> * @param string $_file_ the view file. 视图文件 </span><span> 67</span><span> * @param array $_params_ the parameters (name-value pairs) that will be extracted and made available in the view file. </span><span> 68</span><span> * @return string the rendering result 执行结果 </span><span> 69</span><span>*/</span><span> 70</span><span>public</span> function renderPhpFile($_file_, $_params_ =<span> []) </span><span> 71</span><span> { </span><span> 72</span> ob_start(); <span>//</span><span>打开输出缓冲</span><span> 73</span> ob_implicit_flush(<span>false</span>); <span>//</span><span>关闭缓冲区</span><span> 74</span> extract($_params_, EXTR_OVERWRITE);<span>//</span><span> 将一个数组转换为变量使用</span><span> 75</span><span> require($_file_); </span><span> 76</span><span> 77</span><span>return</span> ob_get_clean();<span>//</span><span>得到缓冲区的内容并清除当前输出缓冲</span><span> 78</span><span> } </span><span> 79</span><span> 80</span><span>/*</span><span>* </span><span> 81</span><span> * Renders dynamic content returned by the given PHP statements. 渲染动态内容 </span><span> 82</span><span> * This method is mainly used together with content caching (fragment caching and page caching) </span><span> 83</span><span> * 用来聚合缓存的内容 </span><span> 84</span><span> * when some portions of the content (called *dynamic content*) should not be cached. </span><span> 85</span><span> * The dynamic content must be returned by some PHP statements. </span><span> 86</span><span> * 渲染某些被PHP语句返回的动态内容 </span><span> 87</span><span> * @param string $statements the PHP statements for generating the dynamic content.生成动态内容的PHP语句。 </span><span> 88</span><span> * @return string the placeholder of the dynamic content, or the dynamic content if there is no </span><span> 89</span><span> * active content cache currently. 动态内容占位符 如果当前没有有效的内容缓存,调用evaluateDynamicContent输出 </span><span> 90</span><span>*/</span><span> 91</span><span>public</span><span> function renderDynamic($statements) </span><span> 92</span><span> { </span><span> 93</span><span>if</span> (!empty($<span>this</span>->cacheStack)) {<span>//</span><span>动态内容的列表不为空</span><span> 94</span> $n = count($<span>this</span>->dynamicPlaceholders);<span>//</span><span>统计动态内容条数</span><span> 95</span> $placeholder = <span>"</span><span></span><span>"</span>;<span>//</span><span>生成占位符</span><span> 96</span> $<span>this</span>->addDynamicPlaceholder($placeholder, $statements);<span>//</span><span>添加动态内容占位符</span><span> 97</span><span> 98</span><span>return</span><span> $placeholder; </span><span> 99</span> } <span>else</span> {<span>//</span><span>没有有效缓存 执行传入的PHP语句,返回执行结果</span><span>100</span><span>return</span> $<span>this</span>-><span>evaluateDynamicContent($statements); </span><span>101</span><span> } </span><span>102</span><span> } </span><span>103</span><span>104</span><span>/*</span><span>* </span><span>105</span><span> * Adds a placeholder for dynamic content. 添加一个动态内容占位符 </span><span>106</span><span> * This method is internally used. 内部使用 </span><span>107</span><span> * @param string $placeholder the placeholder name 占位符名称 </span><span>108</span><span> * @param string $statements the PHP statements for generating the dynamic content </span><span>109</span><span> * 生成动态内容的PHP语句 </span><span>110</span><span>*/</span><span>111</span><span>public</span><span> function addDynamicPlaceholder($placeholder, $statements) </span><span>112</span><span> { </span><span>113</span><span>foreach</span> ($<span>this</span>->cacheStack <span>as</span><span> $cache) { </span><span>114</span> $cache->dynamicPlaceholders[$placeholder] = $statements;<span>//</span><span>添加动态内容占位符</span><span>115</span><span> } </span><span>116</span> $<span>this</span>->dynamicPlaceholders[$placeholder] = $statements;<span>//</span><span>给当前视图添加动态内容占位符</span><span>117</span><span> } </span><span>118</span><span>119</span><span>/*</span><span>* </span><span>120</span><span> * Evaluates the given PHP statements. 给定的PHP语句的值 </span><span>121</span><span> * This method is mainly used internally to implement dynamic content feature.内部使用实现动态内容功能 </span><span>122</span><span> * @param string $statements the PHP statements to be evaluated. PHP语句进行计算 </span><span>123</span><span> * @return mixed the return value of the PHP statements. PHP语句的值 </span><span>124</span><span>*/</span><span>125</span><span>public</span><span> function evaluateDynamicContent($statements) </span><span>126</span><span> { </span><span>127</span><span>return</span><span> eval($statements); </span><span>128</span><span> } </span><span>129</span><span>130</span><span>/*</span><span>* </span><span>131</span><span> * Begins recording a block. </span><span>132</span><span> * This method is a shortcut to beginning [[Block]] </span><span>133</span><span> * 数据块开始的标记,该方法是开始[Block]的快捷方式 </span><span>134</span><span> * 数据块可以在一个地方指定视图内容在另一个地方显示,通常和布局一起使用 </span><span>135</span><span> * @param string $id the block ID. 数据块标识 </span><span>136</span><span> * @param boolean $renderInPlace whether to render the block content in place. 是否渲染块内容。 </span><span>137</span><span> * Defaults to false, meaning the captured block will not be displayed. </span><span>138</span><span> * @return Block the Block widget instance 数据块部件实例 </span><span>139</span><span>*/</span><span>140</span><span>public</span> function beginBlock($id, $renderInPlace = <span>false</span><span>) </span><span>141</span><span> { </span><span>142</span><span>return</span><span> Block::begin([ </span><span>143</span><span>'</span><span>id</span><span>'</span> => $id,<span>//</span><span>数据块唯一标识</span><span>144</span><span>'</span><span>renderInPlace</span><span>'</span> => $renderInPlace,<span>//</span><span>是否显示标识</span><span>145</span><span>'</span><span>view</span><span>'</span> => $<span>this</span><span>, </span><span>146</span><span> ]); </span><span>147</span><span> } </span><span>148</span><span>149</span><span>/*</span><span>* </span><span>150</span><span> * Ends recording a block. 数据块结束标识 </span><span>151</span><span>*/</span><span>152</span><span>public</span><span> function endBlock() </span><span>153</span><span> { </span><span>154</span><span> Block::end(); </span><span>155</span><span> } </span><span>156</span><span>157</span><span>/*</span><span>* </span><span>158</span><span> * Begins the rendering of content that is to be decorated by the specified view. </span><span>159</span><span> * This method can be used to implement nested layout. For example, a layout can be embedded </span><span>160</span><span> * in another layout file specified as '@app/views/layouts/base.php' like the following: </span><span>161</span><span> * 开始指定的view渲染内容,用来实现嵌套布局,传入的第一个参数为布局文件的路径 </span><span>162</span><span> * ~~~ </span><span>163</span><span> * <?php $this->beginContent('@app/views/layouts/base.php'); ?> </span><span>164</span><span> * ...layout content here... </span><span>165</span><span> * <?php $this->endContent(); ?> </span><span>166</span><span> * ~~~ </span><span>167</span><span> * </span><span>168</span><span> * @param string $viewFile the view file that will be used to decorate the content enclosed by this widget. </span><span>169</span><span> * This can be specified as either the view file path or path alias.布局文件的路径或路径别名。 </span><span>170</span><span> * @param array $params the variables (name => value) to be extracted and made available in the decorative view. </span><span>171</span><span> * 可以在视图中运用的参数 </span><span>172</span><span> * @return ContentDecorator the ContentDecorator widget instance 部件实例 </span><span>173</span><span> * @see ContentDecorator </span><span>174</span><span>*/</span><span>175</span><span>public</span> function beginContent($viewFile, $<span>params</span> =<span> []) </span><span>176</span><span> { </span><span>177</span><span>return</span><span> ContentDecorator::begin([ </span><span>178</span><span>'</span><span>viewFile</span><span>'</span> =><span> $viewFile, </span><span>179</span><span>'</span><span>params</span><span>'</span> => $<span>params</span><span>, </span><span>180</span><span>'</span><span>view</span><span>'</span> => $<span>this</span><span>, </span><span>181</span><span> ]); </span><span>182</span><span> } </span><span>183</span><span>184</span><span>/*</span><span>* </span><span>185</span><span> * Ends the rendering of content.结束渲染内容 </span><span>186</span><span>*/</span><span>187</span><span>public</span><span> function endContent() </span><span>188</span><span> { </span><span>189</span><span> ContentDecorator::end(); </span><span>190</span><span> } </span><span>191</span><span>192</span><span>/*</span><span>* </span><span>193</span><span> * Begins fragment caching. 开始片段缓存 </span><span>194</span><span> * This method will display cached content if it is available. </span><span>195</span><span> * If not, it will start caching and would expect an [[endCache()]] </span><span>196</span><span> * call to end the cache and save the content into cache. </span><span>197</span><span> * 展示可用的缓存内容,否则将开始缓存内容直到出现[endCache()]方法 </span><span>198</span><span> * A typical usage of fragment caching is as follows, </span><span>199</span><span> * </span><span>200</span><span> * ~~~ </span><span>201</span><span> * if ($this->beginCache($id)) { </span><span>202</span><span> * // ...generate content here </span><span>203</span><span> * $this->endCache(); </span><span>204</span><span> * } </span><span>205</span><span> * ~~~ </span><span>206</span><span> * </span><span>207</span><span> * @param string $id a unique ID identifying the fragment to be cached.缓存片段的唯一标识 </span><span>208</span><span> * @param array $properties initial property values for [[FragmentCache]]初始属性[FragmentCache] </span><span>209</span><span> * @return boolean whether you should generate the content for caching. 是否生成缓存的内容。 </span><span>210</span><span> * False if the cached version is available. </span><span>211</span><span>*/</span><span>212</span><span>public</span> function beginCache($id, $properties =<span> []) </span><span>213</span><span> { </span><span>214</span> $properties[<span>'</span><span>id</span><span>'</span>] = $id; <span>//</span><span>片段标识</span><span>215</span> $properties[<span>'</span><span>view</span><span>'</span>] = $<span>this</span>; <span>//</span><span>调用初始化属性</span><span>216</span><span>/*</span><span> @var $cache FragmentCache </span><span>*/</span><span>217</span> $cache =<span> FragmentCache::begin($properties); </span><span>218</span><span>if</span> ($cache->getCachedContent() !== <span>false</span><span>) { </span><span>219</span> $<span>this</span>->endCache();<span>//</span><span>从缓存中读取到了缓存的内容,则渲染内容并返回 false,不再进行缓存</span><span>220</span><span>221</span><span>return</span><span>false</span><span>; </span><span>222</span> } <span>else</span><span> { </span><span>223</span><span>return</span><span>true</span><span>; </span><span>224</span><span> } </span><span>225</span><span> } </span><span>226</span><span>227</span><span>/*</span><span>* </span><span>228</span><span> * Ends fragment caching. 结束片段缓存 </span><span>229</span><span>*/</span><span>230</span><span>public</span><span> function endCache() </span><span>231</span><span> { </span><span>232</span><span> FragmentCache::end(); </span><span>233</span><span> } </span><span>234</span><span>235</span><span>/*</span><span>* </span><span>236</span><span> * Marks the beginning of a page.页面开始标记 </span><span>237</span><span>*/</span><span>238</span><span>public</span><span> function beginPage() </span><span>239</span><span> { </span><span>240</span> ob_start(); <span>//</span><span>打开输出缓冲</span><span>241</span> ob_implicit_flush(<span>false</span>);<span>//</span><span>关闭缓冲区</span><span>242</span><span>243</span> $<span>this</span>-><span>trigger(self::EVENT_BEGIN_PAGE); </span><span>244</span><span> } </span><span>245</span><span>246</span><span>/*</span><span>* </span><span>247</span><span> * Marks the ending of a page. 页面结束标记 </span><span>248</span><span>*/</span><span>249</span><span>public</span><span> function endPage() </span><span>250</span><span> { </span><span>251</span> $<span>this</span>-><span>trigger(self::EVENT_END_PAGE); </span><span>252</span> ob_end_flush();<span>//</span><span>关闭输出缓冲区</span><span>253</span> }
以上就介绍了android源码学习 yii2源码学习笔记十九),包括了android源码学习方面的内容,希望对PHP教程有兴趣的朋友有所帮助。

Heiße KI -Werkzeuge

Undresser.AI Undress
KI-gestützte App zum Erstellen realistischer Aktfotos

AI Clothes Remover
Online-KI-Tool zum Entfernen von Kleidung aus Fotos.

Undress AI Tool
Ausziehbilder kostenlos

Clothoff.io
KI-Kleiderentferner

AI Hentai Generator
Erstellen Sie kostenlos Ai Hentai.

Heißer Artikel

Heiße Werkzeuge

Notepad++7.3.1
Einfach zu bedienender und kostenloser Code-Editor

SublimeText3 chinesische Version
Chinesische Version, sehr einfach zu bedienen

Senden Sie Studio 13.0.1
Leistungsstarke integrierte PHP-Entwicklungsumgebung

Dreamweaver CS6
Visuelle Webentwicklungstools

SublimeText3 Mac-Version
Codebearbeitungssoftware auf Gottesniveau (SublimeText3)

Heiße Themen

Lange URLs, die oft mit Schlüsselwörtern und Tracking -Parametern überfüllt sind, können Besucher abschrecken. Ein URL -Verkürzungsskript bietet eine Lösung, die präzise Links erstellt, die ideal für soziale Medien und andere Plattformen sind. Diese Skripte sind für einzelne Websites a wertvoll

Nach seiner hochkarätigen Akquisition durch Facebook im Jahr 2012 nahm Instagram zwei APIs für den Einsatz von Drittanbietern ein. Dies sind die Instagram -Graph -API und die Instagram Basic Display -API. Ein Entwickler, der eine App erstellt, die Informationen von a benötigt

Laravel vereinfacht die Behandlung von temporären Sitzungsdaten mithilfe seiner intuitiven Flash -Methoden. Dies ist perfekt zum Anzeigen von kurzen Nachrichten, Warnungen oder Benachrichtigungen in Ihrer Anwendung. Die Daten bestehen nur für die nachfolgende Anfrage standardmäßig: $ Anfrage-

Laravel bietet eine kurze HTTP -Antwortsimulationssyntax und vereinfache HTTP -Interaktionstests. Dieser Ansatz reduziert die Code -Redundanz erheblich, während Ihre Testsimulation intuitiver wird. Die grundlegende Implementierung bietet eine Vielzahl von Verknüpfungen zum Antworttyp: Verwenden Sie Illuminate \ Support \ facades \ http; Http :: fake ([ 'Google.com' => 'Hallo Welt',, 'github.com' => ['foo' => 'bar'], 'Forge.laravel.com' =>

Dies ist der zweite und letzte Teil der Serie zum Aufbau einer Reaktionsanwendung mit einem Laravel-Back-End. Im ersten Teil der Serie haben wir eine erholsame API erstellt, die Laravel für eine grundlegende Produktlistenanwendung unter Verwendung von Laravel erstellt hat. In diesem Tutorial werden wir Dev sein

Die PHP Client -URL -Erweiterung (CURL) ist ein leistungsstarkes Tool für Entwickler, das eine nahtlose Interaktion mit Remote -Servern und REST -APIs ermöglicht. Durch die Nutzung von Libcurl, einer angesehenen Bibliothek mit Multi-Protokoll-Dateien, erleichtert PHP Curl effiziente Execu

Möchten Sie den dringlichsten Problemen Ihrer Kunden in Echtzeit und Sofortlösungen anbieten? Mit Live-Chat können Sie Echtzeitgespräche mit Kunden führen und ihre Probleme sofort lösen. Sie ermöglichen es Ihnen, Ihrem Brauch einen schnelleren Service zu bieten

Die 2025 PHP Landscape Survey untersucht die aktuellen PHP -Entwicklungstrends. Es untersucht Framework -Nutzung, Bereitstellungsmethoden und Herausforderungen, die darauf abzielen, Entwicklern und Unternehmen Einblicke zu geben. Die Umfrage erwartet das Wachstum der modernen PHP -Versio
