Update User Guide

Author: actions-user

changelogs/v4.7.1.html

@@ -337,6 +337,7 @@ <h2><a class="toc-backref" href="#id6" role="doc-backlink">Bugs Fixed</a><a clas
 <li><p><strong>Database:</strong> Fixed a bug where <code class="docutils literal notranslate"><span class="pre">BaseConnection::callFunction()</span></code> could double-prefix already-prefixed function names.</p></li>
 <li><p><strong>Database:</strong> Fixed a bug where <code class="docutils literal notranslate"><span class="pre">BasePreparedQuery::prepare()</span></code> could mis-handle SQL containing colon syntax by over-broad named-placeholder replacement. It now preserves PostgreSQL cast syntax like <code class="docutils literal notranslate"><span class="pre">::timestamp</span></code>.</p></li>
 <li><p><strong>Model:</strong> Fixed a bug where <code class="docutils literal notranslate"><span class="pre">BaseModel::updateBatch()</span></code> threw an exception when <code class="docutils literal notranslate"><span class="pre">updateOnlyChanged</span></code> was <code class="docutils literal notranslate"><span class="pre">true</span></code> and the index field value did not change.</p></li>
+<li><p><strong>Model:</strong> Fixed a bug where <code class="docutils literal notranslate"><span class="pre">Model::chunk()</span></code> ran an unnecessary extra database query at the end of iteration. <code class="docutils literal notranslate"><span class="pre">chunk()</span></code> now also throws <code class="docutils literal notranslate"><span class="pre">InvalidArgumentException</span></code> when called with a non-positive chunk size.</p></li>
 <li><p><strong>Session:</strong> Fixed a bug in <code class="docutils literal notranslate"><span class="pre">MemcachedHandler</span></code> where the constructor incorrectly threw an exception when <code class="docutils literal notranslate"><span class="pre">savePath</span></code> was not empty.</p></li>
 <li><p><strong>Toolbar:</strong> Fixed a bug where the standalone toolbar page loaded from <code class="docutils literal notranslate"><span class="pre">?debugbar_time=...</span></code> was not interactive.</p></li>
 <li><p><strong>Toolbar:</strong> Fixed a bug in the Routes panel where only the first route parameter was converted to an input field on hover.</p></li>