I have a wordpress website that host several themes inside it.
Now I want to switch the themes for visitor base on the URL that they enter.
for example :
my WP website is at http://www.myblog.com/wp/
but if user enter :
http://www.myblog.com/wp?theme=twentyten -> using twentyten theme
and if user enter :
http://www.myblog.com/wp?theme=mycustomtheme ->using mycustometheme
then
is there any plugins available out there? I've been searching for days but no one seam to work for me.
Any suggestion is very appreciated!
Thanks
I haven't done it, and looking for a minute I don't see a plugin that does that for you. I think your best bet is to make a plugin that would change the theme variable based on the base URL. It's about as simple of a plugin as you can make, so it would be a good one to cut your teeth on if you have any programming ability whatsoever.
This might help:
http://codex.wordpress.org/Theme_Switching
There are 2 plugins noted in that url: http://wordpress.org/extend/plugins/theme-preview/
Theme preview which is what you want.
http://wordpress.org/extend/plugins/theme-switcher/
Theme switcher which do that too and create a sidebar widget so user can change the template.
I've found this good tutorial about base theme swithing on URL.
First, you have to catch the parameter in the URL:
function sjc_add_query_vars($vars)
{
return array('template') + $vars;
}
add_filter('query_vars', 'sjc_add_query_vars');
And then you serve the template:
function sjc_template($template)
{
global $wp;
if ($wp->query_vars['template']=='basic')
{
return dirname( __FILE__ ) . '/single-basic.php';
}
else
{
return $template;
}
}
add_filter('single_template', 'sjc_template');
Please note that the code above check if $wp->query_vars['template']=='basic' and not simply return the template specified in the URL, because it could be a security issue.
for who is still interested you have a WordPress functions that switches the theme
switch_theme( $stylesheet )
see https://codex.wordpress.org/Function_Reference/switch_theme
Just be care to call it in the right time, I would write it in a mu-plugin for use it.
Related
I have a wordpress plugin which enables me to add events to my website.
However the url structure is e.g.
domain.com/events/cat/event-name
I was looking into the plugin, however I was not able to locate the way how the plugin reacts to that request.
Thus comes my questions:
What different ways are there for a plugin to be called via a certain url structure (like above e.g. all urls which contain "/events/cat" belong to the plugin) ?
I was looking at my .htaccess file but it was unchanged, also i was looking if the plugin uses a
add_action('parse_request', 'handler_action');
But I couldnt find anything. Are there any other ways the plugin could be using?
Thanks a lot!
Its probably using a custom post type using register_post_type function,
this will then build a new URL rewrite rule
The other possible method is by using add_rewrite_rule
something like
add_action('init', 'your_plugin_rules');
function your_plugin_rules() {
add_rewrite_rule( "events/cat/(.+)/?$", 'index.php?events=$matches[1]', "top");
}
if you check and print the value of $wp_rewrite you can see all the rewrite rules
e.g.
add_action('wp_head', function() {
global $wp_rewrite;
echo '</pre>', print_r( $wp_rewrite, 1 ), '</pre>';
});
I've created my own wordpress theme and installed WP-Postratings plugin, but it doesn't work. I add only
<?php if(function_exists('the_ratings')) { the_ratings(); } ?>
It show rating image, but i can't rate anything.
Should I add something to the functions, maybe the reason is ajax, should I add some function?
I'm using the same plugin on my theme
Rating Buttons
if(function_exists('the_ratings')) { the_ratings(); }
Rating Avarage
if(function_exists('the_ratings')) { echo ''.expand_ratings_template('<span class="rating-images">%RATINGS_IMAGES%</span>', get_the_ID()); }
If it doesnt work you may have any javascript conflict , try to disable all plugins and try it again.You must be sure that admin-ajax.php is not blocked by server or anything else.
You should add something to the functions. That code is enough.
It usually happened because the plugin is crashed with another plugin. Disable another plugins one by one until you can rate. Then change the plugin that make the issue with the similar one.
Bit is a basic question here but can someone confirm that this statement be confirmed: WordPress Pages (certain templates created within) can pull different CSS and JS?
Or - does WordPress only permit universal CSS + JS to be pulled across the entire site?
Thanks for clearing this up.
Depends on what plugin and themes you use. The WordPress/PHP functions wp_enqueue_style() and wp_enqueue_script() can be used literally by everyone (core, themes, plugins, you) to request WordPress to load styles or JavaSctript. You can combine this with WordPress functions to check whether the current page is something you want to filter for (post type, post, front-page, category archive, template, etc.). Here is an example to load a custom style if on front page :
if (is_front_page()) {
wp_enqueue_style('custom-frontpage', 'my/path/to/frontpage.css');
}
You will have to hook this piece of code to the wp_enqueue_script action so that WordPress executes it at the appropriate time. Here is an example using an anonymous function:
add_action('wp_enqueue_scripts', function() {
if (is_front_page())
wp_enqueue_style('custom-frontpage', 'my/path/to/frontpage.css');
});
You can also register your code as a "normal" function and pass the functions name to add_action() instead.
Edit: Enabling and disabling plugins is a bit more difficult, since you can never know how they implement their features without examining the source code. Here are my thoughts on this:
The plugin likely uses the above method (wp_enqueue_styles, wp_enqueue_scripts) to register it's styles and scripts. The plugin, since it assumes to be needed on all pages and posts, does this on every page without the conditional checking described earlier.
You could do one of the following to stop the plugin from doing this:
Identify the place where the plugin loads the styles and scripts and add the if-statement to only do so if the post-ID matches your desired post-ID. This method is bad since your changes are lost every time the plugin is updated.
Write a "counter plugin" (you could just add it to your theme or find a plugin that allowes you to add PHP to your page) that "dequeues" the style and script added by the plugin with inversed conditional tag
The counter-plugin approach would look as follows:
function custom_unregister_plugin() {
if (not the desired blog post) {
wp_dequeue_style('my-plugin-stylesheet-handle');
wp_dequeue_script('my-plugin-script-handle');
}
}
Make sure this function is executed after the enqueuing-code of your plugin by giving it a low priority in the same hook (999 is just an example, test it yourself):
add_action('wp_enqueue_scripts', 'custom_unregister_plugin', 999);
With wp_enqueue_style() you can add stylesheet (https://developer.wordpress.org/reference/functions/wp_enqueue_style/)
You can use it after detecting which template is used
function enqueue_custom_stylesheet() {
if(get_page_template() == 'contact.php')
wp_enqueue_style( 'contact-style', get_template_directory_uri().'/contact.css' );
}
add_action( 'wp_enqueue_scripts', 'enqueue_custom_stylesheet' );
You can use wp_enqueue_style for your CSS, wp_enqueue_script for your JS, wp_localize_script to pass variables from PHP to JS.
You can call these with hooks like:
funtion enqueue_my_stuff()
{
// your enqueue function calls
}
add_action('wp_enqueue_scripts','enqueue_my_stuff'); //front end
add_action('admin_enqueue_scripts','enqueue_my_stuff'); //admin panel
add_action('login_enqueue_scripts','enqueue_my_stuff'); //login screen
Yesterday I installed a new theme on Wordpress on my self-hosted website. I am aware of the feature that allows you to preview a theme and have used it to select a new Theme that I want to install.
Problem
I do not want to interrupt normal operations of my website, but this new theme requires a lot of customization before it is ready to go. How do I do this?
My Crappy Solution
Is the only way to go about it to run a virtual server on my desktop? This seems tedious, not to mention all the errors I usually get when switching to the "real" server when doing this.
A better way?
I've been searching on SO as well as the WordPress Forum for an answer as to how to do this, but have come up short. I would have thought this is a common question. Maybe I'm using the wrong search terms [themes, customization, before installing]???
Any help is greatly appreciated! Thanks!
Ok, since your question is a pretty good one and probably not a few people are going through the same process when they decide to update their site, I decided to give a try to the get_stylesheet and get_template filter hooks. It turns out that with a very small plugin, you can easily enforce a specific theme(well in this case any logged-in visitor, but you can change this to use any logic you want) according to a specific rule/s.
Here's the code that you need to put in a file in your plugins directory:
<?php
/*
Plugin Name: Switch Theme
Description: Switches the theme for logged-in visitors, while keeping the current theme for everyone else. !!!NOTE!!! Please back-up your database prior using this plugin - I can't guarantee that it will work with any theme, nor that it won't break your site's set-up - USE AT YOUR OWN RISK(I did a quick test and it seemed to be fine, but haven't done extensive testing).
You don't need to switch to the desired theme before that - you want to keep active the theme that you will display to your visitors - the one that you will see will be used programatically.
Before activating the plugin, change the line that says `private $admin_theme = '';` to `private $admin_theme = 'theme-directory-name';` where "theme-directory-name" is obviously the name of the directory in which the desired theme resides in.
*/
class MyThemeSwitcher {
private $admin_theme = '';
function MyThemeSwitcher() {
add_filter( 'stylesheet', array( &$this, 'get_stylesheet' ) );
add_filter( 'template', array( &$this, 'get_template' ) );
}
function get_stylesheet($stylesheet = '') {
if ( is_user_logged_in() && $this->admin_theme ) {
return $this->admin_theme;
}
return $stylesheet;
}
function get_template( $template ) {
if ( is_user_logged_in() && $this->admin_theme ) {
return $this->admin_theme;
}
return $template;
}
}
$theme_switcher = new MyThemeSwitcher();
So - first of all BACKUP YOUR DATABASE! I tested locally with Twenty Eleven being the default theme and a basic framework theme as my custom theme - the theme options and navigation menus were saved properly.
Then all you need to do is to update the file(change the line that says private $admin_theme = ''; to private $admin_theme = 'theme-slug'; where theme-slug is the name of the directory in which the theme you want to use is).
Also - you won't be able to change the Front page and Posts page options, without this affecting the live site, nor will you be able to change the any shared components that both themes use(Site name, Front Page, Posts page, Posts Per Page, etc options, content and so on).
So if you have no clue whether this solution is for you - well, it depends.
If both themes are not relatively complex, then most-likely you should be able to use this hack. If they are though maybe you should do a second installation of your website as others suggested - I think that a second installation in either a sub-domain or a sub-directory would be the best option for you(simply because moving a multisite database is more complex than moving a normal WP database).
I'd setup local apache server with a wordpress installed to customize and test a new theme. When you finished customizing it then you can upload the theme to your live site and activate it. If there are settings that you need to set in the dashboard then you probably will have to adjust them again. That's one way to test/customize a theme before putting it live.
You could create a network (make WordPress multisite with define('WP_ALLOW_MULTISITE', true);, see : http://codex.wordpress.org/Create_A_Network) and then create one sub-site, then turn it "off" with a Maintenance plugin so it is not accessible to users not logged in as admin, export your posts & data from main blog, import them in sub-blog with WordPress default importer, then apply your new theme to this sub-blog and work on it. When everything satisfies you, apply the theme to the main site and deactivate subsite.
I'm making a plugin where I want the comments in a single post page not to be printed at all. I need to query the database myself and print my own html with the results.
How can I make WordPress to not print the comments, without disabling them?
Thank you
EDIT:
as a suggestion, I am using:
apply_filters('comments_template', array($this,'comments_template'), 10, 1);
function comments_template($template){
$template = '';
return $template;
}
nothing happens, what am I doing wrong?
You could use the comments_template filter to make WordPress use your plugin's template file rather than the current theme's.
EDIT: based on your edited code: unfortunately you need to have an actual file, the path to which you return in $this->comments_template()...
class MyPlugin{
//add the filter somewhere...
function comments_template($template){
return dirname(__FILE__) . "/my_comments_template.php";
}
}
The file plugin_dir/my_comments_template.php must exist, otherwise WP falls back on the default theme's comments.php. See wp-includes/comment-template.php on lines 911-917.
In plugin_dir/my_comments_template.php you could call `MyPlugin::do_comments() or something like that. I don't know any other way around this. Let me know if you find a better way.
Cheers, Chris