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<section id="version-4-0-0-rc-4">
<h1>Version 4.0.0-rc.4<a class="headerlink" href="#version-4-0-0-rc-4" title="Permalink to this headline"></a></h1>
<p>Release Date: February 6, 2020</p>
<p><strong>RC.4 release of CodeIgniter4</strong></p>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><p><a class="reference internal" href="#enhancements" id="id1">Enhancements</a></p></li>
<li><p><a class="reference internal" href="#prs-merged" id="id2">PRs merged</a></p></li>
</ul>
</div>
<section id="enhancements">
<h2><a class="toc-backref" href="#id1">Enhancements</a><a class="headerlink" href="#enhancements" title="Permalink to this headline"></a></h2>
<ul class="simple">
<li><p>Fixed url systems so that it would work when system is served out of subfolders.</p></li>
<li><p>Added required insert ignore support for sqlite3 and mysql.</p></li>
<li><p>Add validation function <cite>is_not_unique</cite></p></li>
<li><p>Various improvements and cleanup to the Email class</p></li>
</ul>
</section>
<section id="prs-merged">
<h2><a class="toc-backref" href="#id2">PRs merged</a><a class="headerlink" href="#prs-merged" title="Permalink to this headline"></a></h2>
<ul class="simple">
<li><p>#2527 Update manual.rst</p></li>
<li><p>#2454 Page in the official documentation on ajax requests with iSAJAX() fixes</p></li>
<li><p>#2525 Remove incorrect inline doc type</p></li>
<li><p>#2524 Restore namespace after regress.</p></li>
<li><p>#2523 Replace legacy CI3 constant.</p></li>
<li><p>#2522 Adding Events information in the Upgrading from 3.x to 4.x section</p></li>
<li><p>#2518 Fix pager URI to work in subfolders.</p></li>
<li><p>#2516 HTML Helper - Fix attribute type for lists</p></li>
<li><p>#2515 Layout Renderer Fix</p></li>
<li><p>#2513 Typo in userguide “Entity Classes - Business Logic”</p></li>
<li><p>#2511 Database add highlight</p></li>
<li><p>#2509 Revert Renderer section reset</p></li>
<li><p>#2507 Update ordering of search locations for better prioritization.</p></li>
<li><p>#2506 HTTP Response - Fix crash on CSP methods CSP is disabled</p></li>
<li><p>#2504 BaseConnection - Nullable return type in getConnectStart()</p></li>
<li><p>#2502 View Renderer - Reset sections after generating the ouput</p></li>
<li><p>#2501 view_cell call controller on initController method.</p></li>
<li><p>#2499 View Parser - Fix ParsePair() with filter</p></li>
<li><p>#2497 Fix splitQueryPart()</p></li>
<li><p>#2496 Use site_url for RedirectResponse.</p></li>
<li><p>#2495 update toolbar userguide</p></li>
<li><p>#2494 Debug Toolbar - Fix Debugbar-Time header, Render in &lt;head&gt;</p></li>
<li><p>#2493 fix sphinx version.</p></li>
<li><p>#2490 fix. Toolbar init view Error</p></li>
<li><p>#2489 Fix pager</p></li>
<li><p>#2486 Update current_url and previous_url in the docs for View Parser.</p></li>
<li><p>#2485 Typo in user guide “Running via the Command Line”</p></li>
<li><p>#2482 Services request add URI Core System extend support</p></li>
<li><p>#2481 Priority Redirection.</p></li>
<li><p>#2472 ControllerTest should work without URI specified. Fixes #2470</p></li>
<li><p>#2471 Transition from Zend Escaper to Laminas Escaper</p></li>
<li><p>#2462 Fix impossible length for migration table id.</p></li>
<li><p>#2458 Replace <cite>composer install</cite> by <cite>composer require</cite></p></li>
<li><p>#2450 CRITICAL when $_SESSION is null / Argument 2 passed to dot_array_search() must be []</p></li>
<li><p>#2449 User Guide: Query Builder selectCount - error correction in example</p></li>
<li><p>#2447 Existing File checks (Nowackipawel/patch-69)</p></li>
<li><p>#2446 DB Insert Ignore (Tada5hi/database-feature)</p></li>
<li><p>#2438 Nice array view in debug toolbar</p></li>
<li><p>#2436 Fix Message method reference</p></li>
<li><p>#2433 Inserting through a model should respect all validation rules. Fixes #2384</p></li>
<li><p>#2432 Fix curly brace deprecation in php 7.4</p></li>
<li><p>#2429 fix. safe_mailto multi-byte safe</p></li>
<li><p>#2427 Add $recipients property to ConfigEmail</p></li>
<li><p>#2426 Add hex validation rule, test, Guide</p></li>
<li><p>#2425 fix: Router setDefaultNameSpace cant worker</p></li>
<li><p>#2422 Dont show duplicate Date headers when running under PHPs server.</p></li>
<li><p>#2420 Change current_url() to use cloned URI</p></li>
<li><p>#2417 Revise Encryption Service Documentation</p></li>
<li><p>#2416 Add missing closing braces of condition hasError()</p></li>
<li><p>#2415 Add nullable to MySQL field data</p></li>
<li><p>#2413 fix. toolbar file 301</p></li>
<li><p>#2411 fix parse params of plugin</p></li>
<li><p>#2408 Ensure previous_url() gets accurate URI.</p></li>
<li><p>#2407 Fix url helper functions to work when site hosted in subfolders.</p></li>
<li><p>#2406 Fix issue #2391 CodeIgniter::display404errors()</p></li>
<li><p>#2402 Removed pointless isset() check</p></li>
<li><p>#2401 Remove pointless check from conditional</p></li>
<li><p>#2400 Remove redundant check in conditionals</p></li>
<li><p>#2399 Revise Controllers Documentation</p></li>
<li><p>#2398 Edit .htaccess</p></li>
<li><p>#2392 Add validation function <cite>is_not_unique</cite></p></li>
<li><p>#2389 Confer silent status to nested seeders</p></li>
<li><p>#2388 Fix copypaste command comment</p></li>
<li><p>#2387 Use only digits for migrations order</p></li>
<li><p>#2382 quick fix postgresql insert id</p></li>
<li><p>#2381 Fix: Use of CodeIgniterConfigServices prevents Service overriding</p></li>
<li><p>#2379 Replace null log file extension check</p></li>
<li><p>#2377 Docs Rev: Replacing Core Classes</p></li>
<li><p>#2369 Remove LoggerAwareTrait from Email class</p></li>
<li><p>#2368 Remove log_message from Email::__construct</p></li>
<li><p>#2364 Email config doesnt incorporate .env items</p></li>
<li><p>#2362 Fix SMTP protocol problem</p></li>
<li><p>#2359 Bugfix Model after event data</p></li>
<li><p>#2358 Fix Logger config</p></li>
<li><p>#2356 Fix typo in comments of Services.php</p></li>
<li><p>#2352 Fix method name to toDateString() in Date and Times user guide</p></li>
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