<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Validation of Documents — Doctrine MongoDB ODM 1.1.5 documentation</title> <link rel="stylesheet" href="../_static/bootstrap/css/bootstrap.min.css" type="text/css" /> <link rel="stylesheet" href="../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="../_static/layout.css" type="text/css" /> <link rel="stylesheet" href="../_static/configurationblock.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '1.1.5', COLLAPSE_MODINDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/configurationblock.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/configurationblock.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/configurationblock.js"></script> <script src="../_static/bootstrap/js/bootstrap.min.js"></script> <script type="text/javascript"> <!-- $(document).ready(function() { $("#versions").change(function() { var docsUrl = $(this).val(); window.location.href = docsUrl; }); }); --> </script> <link rel="shortcut icon" href="../_static/doctrine.ico"/> <link rel="search" title="Search" href="../search.html" /> <link rel="top" title="Doctrine MongoDB ODM 1.1.5 documentation" href="../index.html" /> </head> <body> <div id="wrapper"> <div id="header"> <h1 id="h1title"></h1> <div id="logo"> <a href="http://www.doctrine-project.org/">Doctrine - PHP Database Libraries</a> </div> </div> <div id="nav" class="cls"> <div class="tl cls"> <ul> <li><a target="_top" href="http://www.doctrine-project.org/">Home</a></li> <li><a target="_top" href="http://www.doctrine-project.org/about.html">About</a></li> <li><a target="_top" href="http://www.doctrine-project.org/projects.html">Projects</a></li> <li><a target="_top" href="http://www.doctrine-project.org/contribute.html">Contribute</a></li> <li><a target="_top" href="http://www.doctrine-project.org/community.html">Community</a></li> <li><a target="_top" href="http://www.doctrine-project.org/archive.html">Blog</a></li> <li><a target="_top" href="http://www.doctrine-project.org/jira">Development</a></li> </ul> </div> </div> <div id="content" class="cls"> <div class="related"> <h3>Navigation</h3> <ul> <li><a href="/">Doctrine Homepage</a> »</li> <li><a href="../index.html">Doctrine MongoDB ODM 1.1.5 documentation</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" > <div class="section" id="validation-of-documents"> <h1>Validation of Documents<a class="headerlink" href="#validation-of-documents" title="Permalink to this headline">ΒΆ</a></h1> <p><em>Section author: Benjamin Eberlei <<a class="reference external" href="mailto:kontakt%40beberlei.de">kontakt<span>@</span>beberlei<span>.</span>de</a>></em></p> <p>Doctrine does not ship with any internal validators, the reason being that we think all the frameworks out there already ship with quite decent ones that can be integrated into your Domain easily. What we offer are hooks to execute any kind of validation.</p> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">You don't need to validate your documents in the lifecycle events. Its only one of many options. Of course you can also perform validations in value setters or any other method of your documents that are used in your code.</p> </div> <p>Documents can register lifecycle event methods with Doctrine that are called on different occasions. For validation we would need to hook into the events called before persisting and updating. Even though we don't support validation out of the box, the implementation is even simpler than in Doctrine 1 and you will get the additional benefit of being able to re-use your validation in any other part of your domain.</p> <p>Say we have an <code class="docutils literal"><span class="pre">Order</span></code> with several <code class="docutils literal"><span class="pre">OrderLine</span></code> instances. We never want to allow any customer to order for a larger sum than he is allowed to:</p> <div class="highlight-php"><div class="highlight"><pre><span class="cp"><?php</span> <span class="k">class</span> <span class="nc">Order</span> <span class="p">{</span> <span class="k">public</span> <span class="k">function</span> <span class="nf">assertCustomerAllowedBuying</span><span class="p">()</span> <span class="p">{</span> <span class="nv">$orderLimit</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">customer</span><span class="o">-></span><span class="na">getOrderLimit</span><span class="p">();</span> <span class="nv">$amount</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">orderLines</span> <span class="k">AS</span> <span class="nv">$line</span><span class="p">)</span> <span class="p">{</span> <span class="nv">$amount</span> <span class="o">+=</span> <span class="nv">$line</span><span class="o">-></span><span class="na">getAmount</span><span class="p">();</span> <span class="p">}</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$amount</span> <span class="o">></span> <span class="nv">$orderLimit</span><span class="p">)</span> <span class="p">{</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">CustomerOrderLimitExceededException</span><span class="p">();</span> <span class="p">}</span> <span class="p">}</span> <span class="p">}</span> </pre></div> </div> <p>Now this is some pretty important piece of business logic in your code, enforcing it at any time is important so that customers with a unknown reputation don't owe your business too much money.</p> <p>We can enforce this constraint in any of the metadata drivers. First Annotations:</p> <div class="configuration-block"> <ul class="simple"> <li><em>PHP</em><div class="highlight-php"><div class="highlight"><pre><span class="cp"><?php</span> <span class="sd">/** @Document @HasLifecycleCallbacks */</span> <span class="k">class</span> <span class="nc">Order</span> <span class="p">{</span> <span class="sd">/** @PrePersist @PreUpdate */</span> <span class="k">public</span> <span class="k">function</span> <span class="nf">assertCustomerAllowedBuying</span><span class="p">()</span> <span class="p">{}</span> <span class="p">}</span> </pre></div> </div> </li> <li><em>XML</em><div class="highlight-xml"><div class="highlight"><pre><span class="nt"><doctrine-mapping></span> <span class="nt"><document</span> <span class="na">name=</span><span class="s">"Order"</span><span class="nt">></span> <span class="nt"><lifecycle-callbacks></span> <span class="nt"><lifecycle-callback</span> <span class="na">type=</span><span class="s">"prePersist"</span> <span class="na">method=</span><span class="s">"assertCustomerallowedBuying"</span> <span class="nt">/></span> <span class="nt"><lifecycle-callback</span> <span class="na">type=</span><span class="s">"preUpdate"</span> <span class="na">method=</span><span class="s">"assertCustomerallowedBuying"</span> <span class="nt">/></span> <span class="nt"></lifecycle-callbacks></span> <span class="nt"></document></span> <span class="nt"></doctrine-mapping></span> </pre></div> </div> </li> </ul> </div> <p>Now validation is performed whenever you call <code class="docutils literal"><span class="pre">DocumentManager#persist($order)</span></code> or when you call <code class="docutils literal"><span class="pre">DocumentManager#flush()</span></code> and an order is about to be updated. Any Exception that happens in the lifecycle callbacks will be cached by the DocumentManager and the current transaction is rolled back.</p> <p>Of course you can do any type of primitive checks, not null, email-validation, string size, integer and date ranges in your validation callbacks.</p> <div class="highlight-php"><div class="highlight"><pre><span class="cp"><?php</span> <span class="sd">/** @Document @HasLifecycleCallbacks */</span> <span class="k">class</span> <span class="nc">Order</span> <span class="p">{</span> <span class="sd">/** @PrePersist @PreUpdate */</span> <span class="k">public</span> <span class="k">function</span> <span class="nf">validate</span><span class="p">()</span> <span class="p">{</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">plannedShipDate</span> <span class="nx">instanceof</span> <span class="nx">DateTime</span><span class="p">))</span> <span class="p">{</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">ValidateException</span><span class="p">();</span> <span class="p">}</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">plannedShipDate</span><span class="o">-></span><span class="na">format</span><span class="p">(</span><span class="s1">'U'</span><span class="p">)</span> <span class="o"><</span> <span class="nb">time</span><span class="p">())</span> <span class="p">{</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">ValidateException</span><span class="p">();</span> <span class="p">}</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">customer</span> <span class="o">==</span> <span class="k">null</span><span class="p">)</span> <span class="p">{</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">OrderRequiresCustomerException</span><span class="p">();</span> <span class="p">}</span> <span class="p">}</span> <span class="p">}</span> </pre></div> </div> <p>What is nice about lifecycle events is, you can also re-use the methods at other places in your domain, for example in combination with your form library. Additionally there is no limitation in the number of methods you register on one particular event, i.e. you can register multiple methods for validation in "PrePersist" or "PreUpdate" or mix and share them in any combinations between those two events.</p> <p>There is no limit to what you can and can't validate in "PrePersist" and "PreUpdate" as long as you don't create new document instances. This was already discussed in the previous blog post on the Versionable extension, which requires another type of event called "onFlush".</p> <p>Further readings: <a class="reference internal" href="../reference/events.html"><span class="doc">Lifecycle Events</span></a></p> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <div id="searchbox" style=""> <h3>Search</h3> <form class="search" action="http://readthedocs.org/search/project/" method="get"> <input type="text" name="q" size="18"> <input type="submit" value="Go"> <input type="hidden" name="selected_facets" value="project:"> </form> </div> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/cookbook/validation-of-documents.rst.txt" rel="nofollow">Show Source</a></li> </ul> </div> </div> <div class="clearer"></div> </div> <div class="footer"> © Copyright 2013, Doctrine Project Team. 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