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<h1>Upserting Documents<a class="headerlink" href="#upserting-documents" title="Permalink to this headline"></a></h1>
<p>Upserting documents in the MongoDB ODM is easy. All you really have to do
is specify an ID ahead of time and Doctrine will perform an <code class="docutils literal"><span class="pre">update</span></code> operation
with the <code class="docutils literal"><span class="pre">upsert</span></code> flag internally instead of a <code class="docutils literal"><span class="pre">batchInsert</span></code>.</p>
<p>Example:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$article</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Article</span><span class="p">();</span>
<span class="nv">$article</span><span class="o">-&gt;</span><span class="na">setId</span><span class="p">(</span><span class="nv">$articleId</span><span class="p">);</span>
<span class="nv">$article</span><span class="o">-&gt;</span><span class="na">incrementNumViews</span><span class="p">();</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">persist</span><span class="p">(</span><span class="nv">$article</span><span class="p">);</span>
<span class="nv">$dm</span><span class="o">-&gt;</span><span class="na">flush</span><span class="p">();</span>
</pre></div>
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<p>The above would result in an operation like the following:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="cp">&lt;?php</span>
<span class="nv">$articleCollection</span><span class="o">-&gt;</span><span class="na">update</span><span class="p">(</span>
<span class="k">array</span><span class="p">(</span><span class="s1">&#39;_id&#39;</span> <span class="o">=&gt;</span> <span class="k">new</span> <span class="nx">MongoId</span><span class="p">(</span><span class="nv">$articleId</span><span class="p">)),</span>
<span class="k">array</span><span class="p">(</span><span class="s1">&#39;$inc&#39;</span> <span class="o">=&gt;</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;numViews&#39;</span> <span class="o">=&gt;</span> <span class="mi">1</span><span class="p">)),</span>
<span class="k">array</span><span class="p">(</span><span class="s1">&#39;upsert&#39;</span> <span class="o">=&gt;</span> <span class="k">true</span><span class="p">,</span> <span class="s1">&#39;safe&#39;</span> <span class="o">=&gt;</span> <span class="k">true</span><span class="p">)</span>
<span class="p">);</span>
</pre></div>
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<p>The extra benefit is the fact that you don't have to fetch the <code class="docutils literal"><span class="pre">$article</span></code> in order
to append some new data to the document or change something. All you need is the
identifier.</p>
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