I'm creating AMP pages on my own, without a plugin, and I have one problem that I can't solve.
function h34_endpoints_add_endpoint_pinup()
{
add_rewrite_endpoint('amp', EP_ALL);
}
add_action('init', 'h34_endpoints_add_endpoint_pinup');
add_filter('template_include', 'amp_page_template_pinup', 2);
function amp_page_template_pinup($template)
{
if (get_query_var('amp', false) !== false) {
$template = plugin_dir_path(__FILE__) . 'amp-template.php';
}
return $template;
}
Now in the amp-template.php file ш need to get the post data (if it is a post) but where and how to get the post ID?
global $post; shows nothing
get_the_ID() - doesn't output anything either.
I will be grateful for any help
Related
I would like to serve different content based on the URL.
I started with a custom page setup via a custom template but I am open to something else.
The main goal is to have one PHP page that can serve different contents programmatically based on the URL.
For example:
https://some-url.com/my-plugin/ -> run my page
https://some-url.com/my-plugin/foo/ -> run my page
https://some-url.com/my-plugin/foo2/abc/ -> run my page
etc...
I have been looking at add_rewrite_rule, add_rewrite_tag, flush_rewrite_rules and WP_Rewrite API but I am getting confused about which one I should use?
I found an example here but I could not make it work, I get 404s, any idea why?:
/*
Plugin Name: Products Plugin
Plugin URI: http://clivern.com/
Description: Register URL rules for our products
Version: 1.0
Author: Clivern
Author URI: http://clivern.com
License: MIT
*/
function products_plugin_activate() {
products_plugin_rules();
flush_rewrite_rules();
}
function products_plugin_deactivate() {
flush_rewrite_rules();
}
function products_plugin_rules() {
add_rewrite_rule('products/?([^/]*)', 'index.php?pagename=products&product_id=$matches[1]', 'top');
}
function products_plugin_query_vars($vars) {
$vars[] = 'product_id';
return $vars;
}
function products_plugin_display() {
$products_page = get_query_var('pagename');
$product_id = get_query_var('product_id');
if ('products' == $products_page && '' == $product_id):
//show all products
exit;
elseif ('products' == $products_page && '' != $product_id):
//show product page
exit;
endif;
}
//register activation function
register_activation_hook(__FILE__, 'products_plugin_activate');
//register deactivation function
register_deactivation_hook(__FILE__, 'products_plugin_deactivate');
//add rewrite rules in case another plugin flushes rules
add_action('init', 'products_plugin_rules');
//add plugin query vars (product_id) to wordpress
add_filter('query_vars', 'products_plugin_query_vars');
//register plugin custom pages display
add_filter('template_redirect', 'products_plugin_display');
First of all, make sure your pretty permalinks are enabled, in this case the option "Plain" in Settings - Permalinks should be unselected:
Select one of these options to enable pretty permalinks
You can check whether pretty permalinks are enabled in the code like so:
function is_enabled_pretty_permalinks() {
return !empty( get_option( 'permalink_structure' ) );
}
if ( is_enabled_pretty_permalinks() ) {
echo 'Pretty permalinks enabled';
}
Next add a new rewrite rule:
function add_my_rewrite_rule() {
$page_slug = 'products'; // slug of the page you want to be shown to
$param = 'do'; // param name you want to handle on the page
add_rewrite_rule('my-plugin/?([^/]*)', 'index.php?pagename=' . $page_slug . '&' . $param . '=$matches[1]', 'top');
}
add_action('init', 'add_my_rewrite_rule');
Add your parameter to query vars so you will be able to handle it on the page:
function add_my_query_vars($vars) {
$vars[] = 'do'; // param name you want to handle on the page
return $vars;
}
add_filter('query_vars', 'add_my_query_vars');
Then you can access your query var do in the page template or in a shortcode, for example:
function my_plugin_shortcode_handler( $atts ){
$do = get_query_var( 'do' );
if ( $do === 'this' ) {
return 'do this';
} else {
return 'do that';
}
}
add_shortcode( 'myshortcode', 'my_plugin_shortcode_handler' );
Then place the shortcode to the content via Gutenberg.
Check out the links:
https://some-url.com/my-plugin/this/ - outputs "do this"
https://some-url.com/my-plugin/that/ - outputs "do that".
This can be solved by using query params. Like you mentioned you have set up custom page via a custom template. You can read the URL and check for the parameters and based on that you can send data from the PHP template page.
e.g,
function cleanTheInput($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
$data = htmlentities($data);
return $data;
}
if (isset($_GET['page_url'])) {
$theUrl = cleanTheInput($_GET['page_url']);
}
if($theUrl == 266)){
// data for https://some-url.com/?page_url=266
}
if($theUrl == 366)){
// data for https://some-url.com/?page_url=366
}
I have an addition to url e.g. /products/myproduct/?v=iphone-x/transparent/*/Green
So what I need is for wordpress to add the ?v=iphone-x/transparent/*/Green to all links on the page (only '<a href="">'s, no 'img src=""' or others)
I have managed to do that, but it's a little "dirty". Is there any neat function to add the parameter to all links?
The code I have is as follows:
function callback($buffer) {
// modify buffer here, and then return the updated code
$temp = explode('href="', $buffer);
$buffer = $temp[0];
array_shift($temp);
foreach($temp as $t){
$tt = explode('"', $t, 2);
$buffer .= 'href="'.$tt[0].'?v='.$_GET['v'].'"'.$tt[1];
}
return $buffer;
}
function buffer_start() { ob_start("callback"); }
function buffer_end() { ob_end_flush(); }
add_action('wp_head', 'buffer_start');
add_action('wp_footer', 'buffer_end');
One way you can achieve this is to hook into "the_content" filter. By using regexp with preg_replace_callback function you can get decent results.
function add_para( $content ) {
$content = preg_replace_callback(
"/href=(?>'|\")([^\"']+)(?>'|\")/",
function($m) {
print_r($m);
return "href='".$m[1]."/additional-param'";
},
$content);
return $content;
}
add_filter( 'the_content', 'add_para', 0 );
However, you might run into some issues particularly if your content is not formatted probably (extra spaces, missing tags .. etc).
So the alternative is either to us a JS approach (jQuery for example), or using PHP DOM parser like: PHP Simple HTML DOM Parser
I try to set custom titles using data from the content. Those are not pages nor posts - plugin (chaturbate) that I'm fixing somehow process urls like /lala-fafa without having any entries in the posts table.
Here is my code
add_filter( 'the_title', 'chfix_alter_title', 9999);
function chfix_alter_title($title, $id=null)
{
global $chfix_values;
return "$chfix_values[Name] $chfix_values[Age]...";
}
add_filter( 'the_content', 'chfix_doit', 9999 );
function chfix_doit($content)
{
global $chfix_names, $chfix_values;
if (!is_admin())
{
foreach($chfix_names as $name)
{
// parsing content
$chfix_values = chfix_get_field($content, $name);
}
}
return $content;
}
The problem is that the_title filter is called AFTER the_content filter. I also tried wpseo_title, widget_title with no luck. Is any possibility to make what I want?
I am developing a plugin for a website.(Which is my first plugin for Wordpress)
The basic functionality is querying the database and in specific pages show the data from the database with a specific style instead of the content from the pages.
So far I managed to show some text in every specific page.
This is my code after some basic configurations:
global $wpdb;
global $wp_query;
add_action( 'wp', 'check_which_page' );
function check_which_page()
{
$page_type=get_post_type();
$page_id=get_the_ID();
//echo $page_id;
switch($page_id)
{
case 50:technologyPage();break;
case 82:medicalPage();break;
}
}
function technologyPage()
{
return print "Technology";
}
function salesPage()
{
return print "Sales";
}
function medicalPage()
{
return print "Medical";
}
I've read this post, but I couldn't solve my problem.
WordPress replace content of a page (plugin)
I already read the Wordpress documentation but I havent find anything there.
I found myself a solution, using shortcodes.
global $wpdb;
global $wp_query;
add_shortcode( 'sector_page_display', 'check_which_page' );
function check_which_page()
{
$page_type=get_post_type();
$page_id=get_the_ID();
//echo $page_id;
switch($page_id)
{
case 50:technologyPage();break;
case 82:medicalPage();break;
}
}
function technologyPage()
{
return print "Technology";
}
function medicalPage()
{
return print "Medical";
}
See that instead of add_action I changed to add_shortcode
Then on everypage I will use to show info from the database I add
[sector_page_display]
in the page, so it call my method. You can add variables in there if you want.
You'll want to run that code before WordPress has fully loaded.
Try this
global $wpdb;
global $wp_query;
add_action( 'init', 'check_which_page' );
function check_which_page()
{
$page_type=get_post_type();
$page_id=get_the_ID();
//echo $page_id;
switch($page_id)
{
case 50:technologyPage();break;
case 82:medicalPage();break;
}
}
function technologyPage()
{
return print "Technology";
}
function salesPage()
{
return print "Sales";
}
function medicalPage()
{
return print "Medical";
}
I changed the add_action to now run the code when WordPress is being initialized.
If I have a custom post type named 'my_type', how can I get Wordpress to make date-based archives, for example:
mysite.com/my_type/2010/
mysite.com/my_type/2010/07/
mysite.com/my_type/2010/07/28/
I'm looking for tips both on creating the rewrite rules and on linking the urls to templates.
Thanks!
Update:
I've tried the following in my functions.php (EVENT_TYPE_SLUG is a constant defined elsewhere):
function event_rewrite_rules() {
global $wp_rewrite;
$new_rules = array(
EVENT_TYPE_SLUG."/([0-9]{4})/([0-9]{1,2})/$" => 'index.php?post_type=event&year='.$wp_rewrite->preg_index(1).'&monthnum='.$wp_rewrite->preg_index(2),
EVENT_TYPE_SLUG."/([0-9]{4})/$" => 'index.php?post_type=event&year='.$wp_rewrite->preg_index(1),
);
$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}
add_action('generate_rewrite_rules', 'event_rewrite_rules');
the rewrite rules show up in $wp_rewrite-> rules, but when I navigate to those pages I get a 404 error. If I manually navigate to mysite.com/index.php?post_type=event&year=2010, I get redirected to mysite.com/2010?post_type=event
Benj I think WordPress automatically creates archives for custom post type
OK ... took some time but I figured this out (there may be more elegant solutions out there).
1) Create a standard wordpress page to serve as the archive page (and to give me access to the template). I defined the page's slug as a constant (EVENT_ARCHIVE_BASE) so that it's just hard-coded in one place and referenced everywhere else.
2) Make custom rewrite rules that catch that page's urls and redirect them to the page:
function event_date_queryvars($qvars) {
array_push($qvars, 'eyear', 'emonth');
return $qvars;
}
add_filter('query_vars', 'event_date_queryvars');
function event_date_rewrite_rules() {
// Adds rewrite rules for date-based event archives
global $wp_rewrite;
$new_rules = array(
EVENT_ARCHIVE_BASE."/([0-9]{4})/([0-9]{1,2})/?$" =>
"index.php?pagename=".EVENT_ARCHIVE_BASE."&eyear=".$wp_rewrite->preg_index(1)."&emonth=".$wp_rewrite->preg_index(2),
EVENT_ARCHIVE_BASE."/([0-9]{4})/?$" => "index.php?pagename=".EVENT_ARCHIVE_BASE."&eyear=".$wp_rewrite->preg_index(1),
);
$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}
add_action('generate_rewrite_rules', 'event_date_rewrite_rules');
3) At the top of my page template, I check for the custom query vars and build the page accordingly. (I should have been able to use the built-in year and monthnum, but couldn't get them to work properly. Future troubleshooting):
// Was the page called with a specific year, month, or just plain?
$year = get_query_var('eyear');
$monthnum = sprintf('%02d', get_query_var('emonth'));
if ($monthnum) {
$list_type = 'Month';
$monthname = $month[$monthnum];
$heading = "Events from $monthname, $year";
} elseif ($year) {
$list_type = 'Year';
$heading = "Events from $year";
} else {
$list_type = 'AllPast';
$heading = get_the_title();
}
Thanks for the help, and hope this is useful for someone else! Let me know if you have a simpler/built-in way to do this.
I managed to find a more elegant/built-in solution.
The trick is in the "post_type=article" parameter.
If you create a rewrite like so:
'(articles)/([0-9]{4})' => 'index.php?post_type=article&eyear=' . $wp_rewrite->preg_index(2)
This will then keep your URL structure, but go through the default 'archive' template.
Then you steal the template away from the default to your own archive template. (for instance 'archive-articles.php')
This function accomplishes this (works for me):
add_action("template_redirect", 'my_template_redirect');
// Template selection
function my_template_redirect()
{
global $wp;
global $wp_query;
if ($wp->query_vars["post_type"] == "article")
{
if (have_posts())
{
include(TEMPLATEPATH . '/archive-articles.php');
die();
}
else
{
$wp_query->is_404 = true;
}
}
}
You'll still need to create your own methods to handle the get_query_var()'s for the year/month/day, but at least you don't need to create a custom page template.