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	<title>Статьи про web-разработку, PHP, CakePHP. &#187; pages</title>
	<atom:link href="http://blog.michas.ru/tag/pages/feed/" rel="self" type="application/rss+xml" />
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	<description>php, mysql, javascript, cakephp, jquery</description>
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		<title>Статические и динамические страницы в одном контроллере</title>
		<link>http://blog.michas.ru/2010/02/11/static-and-dynamic-pages-in-a-single-controller/</link>
		<comments>http://blog.michas.ru/2010/02/11/static-and-dynamic-pages-in-a-single-controller/#comments</comments>
		<pubDate>Thu, 11 Feb 2010 08:41:35 +0000</pubDate>
		<dc:creator>michas</dc:creator>
				<category><![CDATA[cakephp]]></category>
		<category><![CDATA[controller]]></category>
		<category><![CDATA[pages]]></category>

		<guid isPermaLink="false">http://blog.michas.ru/?p=51</guid>
		<description><![CDATA[В CakePHP есть замечательный стандартный контроллер pages который позволяет нам отображать статические страницы просто создав новый файл. Но очень часто нам требуется иметь как статические страницы так и динамические, содержание которых хранится в БД. Ниже я приведу пример как это можно реализовать используя один контроллер. Предположим у вас есть метод в контроллере pages с именем [...]]]></description>
			<content:encoded><![CDATA[<p>В CakePHP есть замечательный стандартный контроллер pages который позволяет нам отображать статические страницы просто создав новый файл.</p>
<p>Но очень часто нам требуется иметь как статические страницы так и динамические, содержание которых хранится в БД. Ниже я приведу пример как это можно реализовать используя один контроллер.<br />
<span id="more-51"></span><br />
Предположим у вас есть метод в контроллере pages с именем view:</p>

<div class="wp_syntax"><div class="code"><pre class="php" style="font-family:monospace;"><span style="color: #000000; font-weight: bold;">function</span> view<span style="color: #009900;">&#40;</span><span style="color: #000088;">$id</span> <span style="color: #339933;">=</span> <span style="color: #009900; font-weight: bold;">null</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #000088;">$id</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
		<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">Session</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">setFlash</span><span style="color: #009900;">&#40;</span>__<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'Invalid Page.'</span><span style="color: #339933;">,</span> <span style="color: #009900; font-weight: bold;">true</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
		<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">redirect</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'action'</span><span style="color: #339933;">=&gt;</span><span style="color: #0000ff;">'index'</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #009900;">&#125;</span>
	<span style="color: #000088;">$page</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">Page</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">find</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'first'</span><span style="color: #339933;">,</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'conditions'</span><span style="color: #339933;">=&gt;</span>array<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'name'</span><span style="color: #339933;">=&gt;</span><span style="color: #000088;">$id</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">set</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'page'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$page</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
<span style="color: #009900;">&#125;</span></pre></div></div>

<p>Этот метод выводит содержание динамической страницы.</p>
<p>Теперь сделаем так, чтобы данный метод мог выводить и статические и динамические страницы.<br />
Прежде всего добавим в контроллер pages новый метод display. Он находится в стандартном контроллере pages и имеет вид:</p>

<div class="wp_syntax"><div class="code"><pre class="php" style="font-family:monospace;"><span style="color: #000000; font-weight: bold;">function</span> display<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
	<span style="color: #000088;">$path</span> <span style="color: #339933;">=</span> <span style="color: #990000;">func_get_args</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #000088;">$count</span> <span style="color: #339933;">=</span> <span style="color: #990000;">count</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$path</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #000088;">$count</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
		<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">redirect</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'/'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #009900;">&#125;</span>
	<span style="color: #000088;">$page</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$subpage</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$title</span> <span style="color: #339933;">=</span> <span style="color: #009900; font-weight: bold;">null</span><span style="color: #339933;">;</span>
&nbsp;
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #990000;">empty</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$path</span><span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
		<span style="color: #000088;">$page</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$path</span><span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">0</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span>
	<span style="color: #009900;">&#125;</span>
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #990000;">empty</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$path</span><span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">1</span><span style="color: #009900;">&#93;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
		<span style="color: #000088;">$subpage</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$path</span><span style="color: #009900;">&#91;</span><span style="color: #cc66cc;">1</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span>
	<span style="color: #009900;">&#125;</span>
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #990000;">empty</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$path</span><span style="color: #009900;">&#91;</span><span style="color: #000088;">$count</span> <span style="color: #339933;">-</span> <span style="color: #cc66cc;">1</span><span style="color: #009900;">&#93;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
		<span style="color: #000088;">$title</span> <span style="color: #339933;">=</span> Inflector<span style="color: #339933;">::</span><span style="color: #004000;">humanize</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$path</span><span style="color: #009900;">&#91;</span><span style="color: #000088;">$count</span> <span style="color: #339933;">-</span> <span style="color: #cc66cc;">1</span><span style="color: #009900;">&#93;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #009900;">&#125;</span>
	<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">set</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">compact</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'page'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'subpage'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'title'</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">render</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">join</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'/'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$path</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
<span style="color: #009900;">&#125;</span></pre></div></div>

<p>После того как мы добавили новый метод, нам необходимо модифицировать метод view для достижения поставленной цели:</p>

<div class="wp_syntax"><div class="code"><pre class="php" style="font-family:monospace;"><span style="color: #000000; font-weight: bold;">function</span> view<span style="color: #009900;">&#40;</span><span style="color: #000088;">$id</span> <span style="color: #339933;">=</span> <span style="color: #009900; font-weight: bold;">null</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #000088;">$id</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
		<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">Session</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">setFlash</span><span style="color: #009900;">&#40;</span>__<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'Invalid Page.'</span><span style="color: #339933;">,</span> <span style="color: #009900; font-weight: bold;">true</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
		<span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">redirect</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'action'</span><span style="color: #339933;">=&gt;</span><span style="color: #0000ff;">'index'</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #009900;">&#125;</span>
	<span style="color: #000088;">$page</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">Page</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">find</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'first'</span><span style="color: #339933;">,</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'conditions'</span><span style="color: #339933;">=&gt;</span>array<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'name'</span><span style="color: #339933;">=&gt;</span><span style="color: #000088;">$id</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
	<span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #000088;">$page</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#123;</span>
                <span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">set</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'page'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$page</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #009900;">&#125;</span><span style="color: #b1b100;">else</span><span style="color: #009900;">&#123;</span>
                <span style="color: #000088;">$this</span><span style="color: #339933;">-&gt;</span><span style="color: #004000;">display</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$id</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #009900;">&#125;</span>
<span style="color: #009900;">&#125;</span></pre></div></div>

<p>Рассмотрим подробнее проделанные изменения. Вначале мы попробуем найти страницу с заданным именем в БД, если она там найденна то выведем ее, если нет, то, вызываем новый метод display, который ищет в &laquo;/app/views/pages/&raquo; файл с названием которое передается в параметре метода и выводит его.</p>
<p>Готово! Теперь чтобы вывести статичную страницу достаточно создать файл с расширением &laquo;ctp&raquo; в каталоге &laquo;/app/views/pages/&raquo;, а чтобы вывести динамическую страницу, достаточно добавить ее в БД.</p>
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