How to create a function in a custom page and use it in single.php?
I have the custom page mypage.php
<?php
/* Template Name: Form */
...
$myname = add_post_meta( $date, 'My Name', $name, true );
function name(){
if ($myname != ''){
echo ="Hello World! ";
}
}
get_header(); ?>
...
?>
Single page
<? php name(); ?>
To have functions available in all theme template files, you need to put them inside the file /wp-content/themes/your-theme/functions.php.
Just move your function to it, and call it in any template (single, page, archives, category). Check the documentation: Functions File Explained.
And to make the logic of your code work, you'd need to use get_post_meta in the function:
function name(){
$myname = get_post_meta('My Name');
if ($myname != ''){
echo "Hello World! ";
}
}
PS: it's a bit strange that you're setting a post meta everytime the mypage.php template is loaded...
Related
I'm creating my first wordpress plugin to show some dashboard data on the wp-admin-page, however only my php code is recognized when I edited my plugin, any html markup I write is omitted.
I want to make my plugin using HTML+bootstrap for the Front-end but make some calculations using PHP but I don't understand how I can do this.
In my first attempt, I could only echo html markup:
<?php
add_action( 'admin_menu', 'test_plugin_setup_menu' );
function test_plugin_setup_menu(){
add_menu_page( 'Page Title', 'Menu title', 'manage_options', 'test-plugin', 'test_init' );
}
function test_init(){
echo "<h1> Hello World! </h1>";
}
?>/*THIS OUTPUT ON MY WP ADMIN PAGE AS EXPECTED WITH A HELLO WORLD
However I need to write a lot of HTML markup with Bootstrap and only use PHP in some areas but any HTML code I write after my ?> doesn't get show on the page.
Second approach: I referred to my HTML file with PHP
<?php
add_action( 'admin_menu', 'test_plugin_setup_menu' );
function test_plugin_setup_menu(){
add_menu_page( 'Page Title', 'Menu title', 'manage_options', 'test-plugin', 'test_init' );
}
function test_init(){
$file = file_get_contents('index.html', FILE_USE_INCLUDE_PATH);
if($file == false)
{
echo 'file not found';
}
else
{
echo $file;
}
}
?>
This last attempt indeed shown all my HTML login with my bootstrap styled perfectly on the wp-admin-page but i cant use the PHP logic or DB connections I need on this HTML file..
My question is: how can I use my HTML markup in my PHP plugin simultaneously?
Extra info
I'm very new to PHP and Wordpress so I don't know what am I doing wrong in my code so HTML tags cant be show on the page unless I referred them to an external file.
Any help is greatly appreciated.
Another alternative would be to include your php file. Here's the idea:
add_action( 'admin_menu', 'test_plugin_setup_menu' );
function test_plugin_setup_menu() {
add_menu_page( 'Page Title', 'Menu title', 'manage_options', 'test-plugin', 'test_init' );
}
function test_init() {
ob_start();
include_once 'file-that-i-want-to-include.php';
echo ob_get_clean();
}
Then of course in your file-that-i-want-to-include.php. Just create your page like you normally do:
<?php
include_once 'mydatabaseconnction.php';
// ... and so on php codes of sorts
?>
<div class="container">
<div class="row">
<div class="col">
my contents whatever
</div>
</div>
</div>
In addition, you can just load bootstrap in that specific admin settings page if you'd like:
add_action('admin_enqueue_scripts', function() {
if (get_current_screen()->id === 'toplevel_page_test-plugin') { // the prefix is "toplevel_page_"
$css_path = plugins_url('assets/vendor/bootstrap/bootstrap.min.css'); // just change the path going to your css and js
$js_path = plugins_url('assets/vendor/bootstrap/bootstrap.min.js');
wp_enqueue_style('latest-bootstrap-css', $css_path, [], '4.5.0');
wp_enqueue_script('latest-bootstrap-js', $js_path, [], '4.5.0');
}
});
I'm writing a simple plugin for wordpress that changes a single word on a page or a post to make it bold.
For example: vlbs -> vlbs
It works fine for normal Wordpress pages and posts with this code:
defined('ABSPATH') or die('You can\'t enter this site');
class VLBS {
function __construct() {
}
function activate() {
flush_rewrite_rules();
}
function deactivate() {
flush_rewrite_rules();
}
function unstinstall() {
}
function new_content($content) {
return $content = str_replace('vlbs','<strong style="color:#00a500">vlbs</strong>', $content);
}
}
if(class_exists('VLBS')){
$VLBS = new VLBS();
}
add_filter('the_content', array($VLBS, 'new_content'));
//activation
register_activation_hook(__FILE__, array($VLBS, 'activate'));
//deactivation
register_deactivation_hook(__FILE__, array($VLBS, 'deactivate'));
However, it does not work on a page built with Yootheme Pro Pagebuilder. Whatever is done within the function new_content() is processed after the content has already been loaded. Thus, I cannot manipulate it before it is displayed to the user.
So the question would be: How can I get the content of a page before it is displayed? Is there an equivalent to Wordpress' 'the_content'?
Any help is really appreciated! Thank you very much in advance.
Best regards
Fabian
Yootheme: 1.22.5
Wordpress: 5.2.4
PHP: 7.3
Browser: Tested on Chrome, Firefox, Edge, Internet Explorer
In your code, do you are sure it's the good usage of add_filter content ?
In the doc, the 2nd parameter is string, not array:
add_filter( 'the_content', 'filter_the_content_in_the_main_loop' );
function filter_the_content_in_the_main_loop( $content ) {
// Check if we're inside the main loop in a single post page.
if ( is_single() && in_the_loop() && is_main_query() ) {
return $content . esc_html__("I'm filtering the content inside the main loop", "my-textdomain");
}
return $content;
}
In wordpress, the_content function display the content. There is an other function for get_the_content
Go to your page file and get the content. You can use str_replace and echo the new content after.
Example single.php :
if ( $query->have_posts() ) :
while( $query->have_posts() ) : $query->the_post();
$content = get_the_content();
$new_content = str_replace(search, replace, $content);
echo $new_content;
endwhile;
endif;
If it is not possible for you, try to use the output buffer functions. If you need use this functions, I say it and I developpe more this part. But test the solution above before.
Oh, and it exist a special community for WP where your question will more pertinent : https://wordpress.stackexchange.com/
I have this PHP script:
function myshortcode_title( ){
return get_the_title();
}
add_shortcode( 'page_title', 'myshortcode_title' );
What is the shortcut i need for the page title to be shown? What do i need to put in the HTML for the fetched title to be shown
Add this to your theme, or make an plugin from it.
/* title to get the post title */
function getPageTitle() {
global $wp_query;
return get_post_title($wp_query->post->ID);
}
/* Add shortcode */
add_shortcode('page_title', 'getPageTitle');
for more ShortCode Api
You may use this.
echo do_shortcode('[page_title]');
https://developer.wordpress.org/reference/functions/do_shortcode/
I'm trying to get the same effect as the plugin Pages Link To where the title of the post is linked to an external link. The reason I don't want to use the plugin is the link is generated dynamically when the post is saved, but I'm unable to update the the permalink of the post with the external link.
Below is my code in functions.php:
function savepost( $post_id ) {
if( $_POST['post_type'] == 'books' ){
$genre = strip_tags(get_field('genre'));
$author = strip_tags(get_field('author'));
$extlink = "http://www.".$genre."/".$author.".com";
update_post_meta( $post_id, 'extlink', $extlink);
$url = strip_tags(get_field('extlink',$post));
update_post_meta( $post_id, 'post_link', $url);
}
}
add_action( 'save_post', 'savepost' );
i m trying another method in which i assigned a template to the post so that when the post loads it redirects to the link but it doesn't redirect
my code
<?php
ob_start();
?>
<?php
/**
* Template Name: post Redirection Template
*/
get_header();
$redirecturl = strip_tags(get_field('extlink',$post));
wp_redirect($redirect_url);
get_sidebar();
get_footer();
?>
<?php
ob_end_flush();
?>
What you should do, is insert the external link as a custom field in the post editor, then display the custom field value in place of the_permalink(). You could use a plugin such as Advanced Custom Fields to grab the URL from the custom field.
EDIT 1: More clarification using the Advanced Custom Fields plugin as an example. The field name for this example is url.
You should use this wherever you want the custom permalink to appear throughout your site, such as in your archive.php, category.php, etc. Replace the code that looks something like this:
<?php the_title(); ?>
with this:
<?php
$value = get_field( "url" );
if( $value ) { ?>
<?php the_title(); ?>
<?php } else { ?>
<?php the_title(); ?>
<?php } ?>
EDIT 2: Clarifying additional information.
You can add a function to the header.php of your theme that checks if the url is set, then redirects to the external link that way, if your user goes directly to the permalink, it will still redirect them. In fact, you could use this code without using the above code to display the external link.
<?php
$value = get_field( "url" );
if( $value ) {
header('Location: '.$value);
die();
} else {} ?>
Warning: make sure to use this code before any HTML (or text) has been passed to the browser, or it will not work correctly.
I have created a simple page template. I want to create category automatically using wp_insert_category but wp_insert_category is not available inside My Custom Page. Any solution?
<?php
/*
* Template Name: My Custom Page
* Description: A Page Template with a darker design.
*/
get_header(); ?>
<?php
if (function_exists('wp_insert_category')) {
echo "This function is available.";
} else {
echo "This function is not available.";
}
?>
<?php get_footer(); ?>
wp_insert_category is an admin function. You will have to include the taxonomy file first.
Paste the following code in your functions.php . then only wp_insert_category function will work.
if (file_exists (ABSPATH.'/wp-admin/includes/taxonomy.php')) {
require_once (ABSPATH.'/wp-admin/includes/taxonomy.php');
}