Rest api with php » History » Version 11

Robert Nürnberg, 2011-10-06 07:49

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h1. Using the REST API with PHP
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Here is an example that uses "PHP ActiveResource":http://wiki.github.com/lux/phpactiveresource/, a lightweight PHP library that can be used to access Rails' REST APIs:
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<pre>
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<code class="php">
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<?php
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require_once ('ActiveResource.php');
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class Issue extends ActiveResource {
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    var $site = 'http://username:password@192.168.199.129:3000/';
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    var $request_format = 'xml'; // REQUIRED!
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}
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// create a new issue
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$issue = new Issue (array ('subject' => 'XML REST API', 'project_id' => '1'));
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$issue->save ();
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echo $issue->id;
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// find issues
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$issues = $issue->find ('all');
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for ($i=0; $i < count($issues); $i++) {
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	echo $issues[$i]->subject;
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}
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// find and update an issue
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$issue->find (1);
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echo $issue->subject;
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$issue->set ('subject', 'This is the new subject')->save ();
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// delete an issue
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$issue->find (1);
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$issue->destroy ();
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?>
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</code>
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</pre>
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*Known issues*
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* If you are working with large descriptions, the webserver can return a 417 error (Bad Expectation).
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You should replace line 381 in _ActiveResource.php_ with the following code:
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<pre><code class="php">curl_setopt ($ch, CURLOPT_HTTPHEADER, array ('Expect:',"Content-Type: text/xml", "Length: " . strlen ($params)));</code></pre>
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* If you are trying to use the class to write @time_entries@, you will get a 404 response (#9375). The reason for that is that the class is unable to create the correct singular form from the pluralized version of the entity name. (edit 2011-10-06: according to the website the bug was fixed in the latest release: https://github.com/lux/phpactiveresource/issues/7#issuecomment-2300502)
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This can be patched in _ActiveResource.php_ by:
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# adding the class variable @$sOriginalElementName@:
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<pre><code class="php">protected $sOriginalElementName = '';</code></pre>
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# changing the constructor to set the class variable using the original entity name before the pluralization is called:
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<pre><code class="php">
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function __construct ($data = array ()) {
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  $this->_data = $data;
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  // add this line here - to store the original name of the entity
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  $this->sOriginalElementName = ($this->element_name ? $this->element_name : strtolower (get_class ($this)));
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  // Allow class-defined element name or use class name if not defined
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  $this->element_name = ($this->element_name ? $this->pleuralize ($this->element_name) : $this->pleuralize (strtolower (get_class ($this))));
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...
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</code></pre>
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# and then changing the method @_send_and_receive@ to use @$sOriginalElementName@ instead of @substr ($this->element_name, 0, -1)@:
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<pre><code class="php">
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function _send_and_receive ($url, $method, $data = array ()) {
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  $params = '';
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  $el = $this->sOriginalElementName;//substr ($this->element_name, 0, -1);
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  if ($this->request_format == 'url') {
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...
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</code></pre>