GregFrey Posted November 1, 2016 Share Posted November 1, 2016 (edited) I have a rudimentary grasp of php. Enough to do basic website templating and I am slowly learning the language, so I apologise if this is an exteremely stupid question. In php how would one refer to the body tag id in order to assign a class to an li in the menu for example? eg: <nav><ul id="menu"><li><a href="/index" class="<?php if(body id="home"){echo "active"} ?> ">Home</a></li></ul></nav> Edited November 1, 2016 by GregFrey Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/ Share on other sites More sharing options...
Barand Posted November 1, 2016 Share Posted November 1, 2016 You can't. You would have to use clientside processing, such as javascript. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538849 Share on other sites More sharing options...
GregFrey Posted November 1, 2016 Author Share Posted November 1, 2016 Thank you for your reply Barand. I did try that and under normal circumstances it would have worked but for some reason fullpage.js strips the active class out of the menu as soon as the page scrolls. So I was hoping for a php solution which would bypass the jquery. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538852 Share on other sites More sharing options...
mac_gyver Posted November 1, 2016 Share Posted November 1, 2016 php only knows the information that it receives from the http(s) request. your php 'page control' logic would determine what page is being produced for any request. the navigation logic would use that value, in a php variable, to determine what to produce in the markup. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538853 Share on other sites More sharing options...
requinix Posted November 1, 2016 Share Posted November 1, 2016 If you're taking the approach of putting an ID on the body then you can do everything with pure CSS. <body id="home"> <ul id="menu"> <li id="menu-home"> <a href="/index">Home</a> </li> </ul> /* something along the lines of */ body#home #menu #menu-home a, body#foo #menu #menu-foo a, body#bar #menu #menu-bar a { whatever; } Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538854 Share on other sites More sharing options...
GregFrey Posted November 1, 2016 Author Share Posted November 1, 2016 Thanks mac_guyver and requinix.@requinix the problem is that the menu is being pulled via a php include, so as there are no if statements in css i cannot specify that on <body id="home"> the "nav li.home a" be assigned a class of 'active'. Jquery is the obvious answer to the problem of course, but the active class is being stripped from the nav as soon as the page scrolls, as outlined above. In any case may thanks for the insights and proposals of everyone who has replied. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538855 Share on other sites More sharing options...
Solution requinix Posted November 1, 2016 Solution Share Posted November 1, 2016 @requinix the problem is that the menu is being pulled via a php include, so as there are no if statements in css i cannot specify that on the "nav li.home a" be assigned a class of 'active'.1. The PHP is irrelevant. Only the HTML it outputs matters. 2. Actually it kinda does. Those three selectors are all essentially "if"s: if this matches, or if that matches, or if the other one matches, then... Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538856 Share on other sites More sharing options...
GregFrey Posted November 1, 2016 Author Share Posted November 1, 2016 I am an idiot. Huge facepalm on my side. You are absolutely correct. Such an elegant solution. Thank you very much for the solution and your patience. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538857 Share on other sites More sharing options...
Jacques1 Posted November 1, 2016 Share Posted November 1, 2016 I'm still not sure if you've actually understood the PHP workflow. When you're running your PHP script, you know what page you're on -- otherwise you wouldn't be able to assign an ID to the body element. So just like you assign the ID based on the page, you can generate a class attribute based on the page: <?php $page = ...; // However this is determined ?> ... <body id="<?= html_escape($page) ?>"> <ul> <li class="<?= ($page == 'home' ? 'active' : '') ?>">Home</li> </ul> </body> Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538858 Share on other sites More sharing options...
GregFrey Posted November 1, 2016 Author Share Posted November 1, 2016 @Jacques1: Yes as I say my knowledge is very limited. When you say "// However this is determined" you are saying it could a url? Or what other factors could determine it? Your solution looks very much like what I was originally trying to achieve. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538859 Share on other sites More sharing options...
Jacques1 Posted November 1, 2016 Share Posted November 1, 2016 When you say "// However this is determined" you are saying it could a url? Or what other factors could determine it? I don't know how you've organized your pages, but you should. If there's a separate script for every page, you can hard-code the $page variable. If there's a single script which receives the target page through a URL parameter, you fill $page with that parameter. Like I said, it depends on how you've organized your application -- there are countless variations. Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538860 Share on other sites More sharing options...
GregFrey Posted November 2, 2016 Author Share Posted November 2, 2016 @Jacques1 Thank you! Quote Link to comment https://forums.phpfreaks.com/topic/302443-how-to-reference-the-id-of-the-body-tag/#findComment-1538866 Share on other sites More sharing options...
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