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POPrestashop: switch theme on the fly and read cookie to check param in url
 

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    <p>In order to setup an A/B testing (through GG Analytics), I planned to duplicate my current theme (for organisations purposes) in order to use the duplicated theme to do the alternate versions of the test. I use <code>Prestashop 1.4.9.2</code> .</p> <p>What I already did, and works:</p> <hr> <p>Added this to <code>/classes/FrontController.php</code>, in <code>displayHeader()</code> function <em>(I know I should override, but not the point ;))</em>:</p> <pre><code>if(isset($_GET['alternate'])) { $cookie-&gt;alternate = "1"; $cookie-&gt;write(); } </code></pre> <hr> <p>Replaced in <code>/config/settings.inc.php</code> :</p> <pre><code>define('_THEME_NAME_', 'my_usual_theme'); </code></pre> <p>by</p> <pre><code>if(isset($_GET['alternate']) || $cookie-&gt;alternate == "1") { define('_THEME_NAME_', 'my_alternate_theme'); } else { define('_THEME_NAME_', 'my_usual_theme'); } </code></pre> <hr> <p>This way, when I load my Prestahop url with "<code>?alternate</code>" at the end, it loads the alternative theme. Fine.</p> <p><strong>PROBLEM</strong>: I can't check the cookie value in <code>settings.inc.php</code>, and so when I click a link, it loads the default theme.</p> <p><strong>QUESTION</strong>: Any clue to check the cookie in this file ? Or <code>config.inc.php</code> ? Or "re-define" the theme name in another file, overriding the <code>settings.inc.php</code> setup ?</p> <p>Please note I check the cookie in another single file to validate the process, and it works well. I also tried to use classic <code>setcookie</code> method, but if I can read/check, I can't write with this way... And for a reason I don't get, PHP activation in Smarty just don't work (tried to <code>setcookie</code> directly in template, but error 500 even with a simple echo).</p> <p>Thanks.</p>
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