If I take Wordpresses AJAX/PHP example how would I call $whatever in another function? If I do get a result outside of the initial function (below) it is always 0.
add_action( 'wp_ajax_my_action', 'my_action_callback' );
function my_action_callback() {
global $wpdb; // this is how you get access to the database
$whatever = intval( $_POST['whatever'] );
$whatever += 10;
echo $whatever; //
die();
}
Wordpress AJAX plugin code example page
I suspect it is very simple but when you get in a certain mindset you cannot look beyond the blinders.
Related
I am running a function within functions.php to pre-populate an acf field. I need to set a variable which will change depending on which post type. When I run get_post_type(); it does not work. I have tried many variations such as:
get_post_type($post->ID);
$id = get_queried_object_id();
$this_is_post_type = get_post_type($post->$id);
I have also used this wordpress function to no avail:
function get_post_type( $post = null ) {
$post = get_post( $post );
if ( $post ) {
return $post->post_type;
}
return false;
}
Can anybody help me get the post type and store it within a variable I can use please? I am out of ideas. If I use get_post_type within the template files it works fine, it is only at the global level - outside of the loop - that it doesn't.
Based on your comments, you are in fact inside of a filter so you should be able to access what you need. However, because you are also targeting new things, not all functions will behave as you expect, specifically get_queried_object() and similar, and this is a case where the global $post is probably the best way.
I ran this through a WordPress site that I have locally and it worked as expected. I'll leave the logic of the interior parts up to you.
add_filter(
'acf/load_field/key=field_62b1c53ac1a88',
function ($field) {
global $post;
// This should always be true because you are targeting a very specific
// key, however better safe than sorry.
if ($post instanceof \WP_Post) {
// Your logic here
if ('news' === $post->post_type) {
$field['default_value'] = 3;
$field['disabled'] = true;
}
}
// Always return something, no matter what
return $field;
}
);
I include the comments on the page afterwards with ajax, required code is in the plugin, but comment_template() function does not work when the request goes plugin file, Ajax request is successful, but there are no comments.
Codes that go to Ajax are as follows.
add_action('wp_ajax_nopriv_comment_update_get','comment_update_get');
add_action('wp_ajax_comment_update_get', 'comment_update_get');
function comment_update_get(){
global $withcomments;
$withcomments = 1;
$post = get_post($_POST['post_id']);
comments_template();
die();
}
From the Code Reference:
Will not display the comments template if not on single post or page,
or if the post does not have comments.
If you take a look at the source code, you'll notice that the comments_template() function checks whether we're currently on a post or a page, or if the global $post object is set up.
So:
function comment_update_get(){
// Set up our required global objects
global $post, $withcomments;
$withcomments = 1;
$post = get_post( $_POST['post_id'] );
// Load the comments template
comments_template();
// We're done here
wp_die();
}
add_action( 'wp_ajax_nopriv_comment_update_get','comment_update_get' );
add_action( 'wp_ajax_comment_update_get', 'comment_update_get' );
I'm creating a plugin OOP for wordpress. The plugin creates a new custom post type called teams. Within a team page a could use the shortcode [program] to generate some predefault html code. Also i've created custom fields with new meta boxes.
The problem however is: when i'm entering the page thats calling the plugin, equal the team page with the sortcode i need to get post id within my plugin to retrieve get_post_meta().
I've tried the following things:
public function __construct(){
// not working
$post;
$post->ID;
// not working
global $wp_query;
$post_id = $wp_query->post->ID;
$post = get_post( $post_id );
// not workiing
echo '<pre>';
print_r('post_id:' . get_the_ID());
echo '</pre>';
}
How could i receive the custom post id within my plugin when i visited the page from frontend (so the plugin is called, runs the shortcode)
My main class gets loaded like this:
function run_plugin() {
$plugin = new MyPlugin();
$plugin->run();
}
run_plugin();
Within MyPlugin the constructor looks like
public function __construct() {
if ( defined( 'PLUGIN_NAME_VERSION' ) ) {
$this->version = PLUGIN_NAME_VERSION;
} else {
$this->version = '1.0.0';
}
$this->plugin_name = 'MyPlugin';
if(!empty(get_option($this->plugin_name))){
$this->clientID = get_option($this->plugin_name)['client_id'];
}
$this->load_dependencies();
$this->set_locale();
$this->define_admin_hooks();
$this->define_public_hooks();
$this->define_shortcodes();
}
If your plugin constructor is getting called too early, the post data won't be set up and ready to use.
You'll need to hook into one of WPs actions that run after everything is ready. The init action should be enough for the post data, but depending on what else you need you can hook into wp_loaded, as it doesn't run until after WordPress is fully loaded.
function run_plugin() {
$plugin = new MyPlugin();
$plugin->run();
}
/* run_plugin(); */ // <- instead of this....
add_action( 'wp_loaded','run_plugin' ); // <- ...do this
Try to define post as global like
global $post
I'm trying to give a pretty url to my custom CPT (Orders). This is the way im trying:
add_filter('post_type_link', 'custom_post_type_link', 1, 3);
function custom_post_type_link( $link, $post = 0 ){
if ( $post->post_type == 'orders' ){
$order_code = 1121000+$post->ID;
return home_url( 'orders/' . $order_code);
} else {
return $link;
}
}
Assume that post ID is 32, This code creates the following url:
http://www.example.com/orders/1121032
Now i wanna write a code to display the post with post ID=32 in above url.
I heard somewhere that i should use custom query vars. But i don't know how to use it.
This is the rest of code i've written
add_filter('query_vars', 'custom_add_query_vars');
function custom_add_query_vars($qVars){
$qVars[] = "code";
return $qVars;
}
add_action( 'init', 'custom_rewrites_init' );
function custom_rewrites_init(){
add_rewrite_rule(
'orders/([0-9]+)?$',
'index.php?post_type=orders&code=$matches[1]',
'top' );
}
After adding custom rewrite rules, wordpress needs to be told to activate the new rule.
Use this method after the add_rewrite_rule function call.
$wp_rewrite->flush_rules();
Warning: flush_rules is expensive, you definitely don't want to call it on every request. Typically you would put the custom_rewrites_init and flush_rules in a plugin register_activation_hook function.
If you're lazy, you can just add it to your code once, make a request to the website (which will rewrite the .htaccess rewrite rules), then comment the flush_rules method out.
I'm new to Wordpress & PHP, so kindly excuse the naivety of the question, if any.
I'm building a plugin where I need to select values from the database and create a new HTML page with the values. I'm using a custom template file.
What I've done till now
Extracted the values from database
Load & display my own template in my plugin file
add_action( 'init', 'leb_add_endpoint' );
function leb_add_endpoint()
{
add_rewrite_endpoint( 'result', EP_PERMALINK );
}
add_action( 'template_include', 'leb_render_template' );
function leb_render_template($default_template) {
//some code removed for brevity
if ( ! is_singular() || !isset($wp_query->query_vars['result']) )
{
return $default_template;
}
$sample_result = $wpdb->get_var($wpdb->prepare($sql));
$default_template = plugin_dir_path(__FILE__) . '/my-custom-template.php';
return $default_template;
}
The content of my-custom-template.php is as follows
<?php
/* Template Name: My Template*/
echo '<h1>Testing</h1>';
?>
The page gets displayed without any problem. All I want is to insert $sample_result and other similar results pulled form database into my-custom-template.php
I need to generate dynamic pages based on values pulled from DB. So each time, the final page created might be different. E.g. if one hits www.example.com/sample-post/result, a page will be shown with values pulled from the DB. If one hits www.example.com/another-sample-post/result, a different page will be shown with different values. Both these pages will have the same design, only a few values will be different. This is what I'm trying to achieve.
How can I do that? Please help me. I'm stuck. :(
You need to define "result" in query vars.
Use EP_ROOT Endpoint Mask ( result/{var} is located in the root )
Inside template_include hook, you can find result value inside $wp_query object.
I've already tested the code
// Add a new var to query vars
function result_add_query_vars( $vars ){
$vars[] = 'result';
return $vars;
}
add_filter( 'query_vars', 'result_add_query_vars' );
// Add endpoint
function result_add_endpoint() {
add_rewrite_endpoint( 'result', EP_ROOT );
}
add_action( 'init', 'result_add_endpoint');
// change the template
function result_render_template($template)
{
global $wp_query;
if ( array_key_exists( 'result', $wp_query->query_vars ) ) {
$result = get_query_var('result');
$new_template = plugin_dir_path(__FILE__) . '/my-custom-template.php';
return $new_template;
} else {
return $template;
}
}
add_action( 'template_include', 'result_render_template' );
Now you can retrieve the query var in your custom template
/*
* Template Name: My Custom Template
*/
$result = get_query_var('result');
echo $result;
Well why don't you use $wp_query Inside your my-custom-template.php
<?php
/* Template Name: My Template*/
global $wp_query;
echo '<pre>';
print_r($wp_query); // Use this in case you want to see what else do you have with you.
echo '<pre/>';
// Now you can use $wp_query to build your dynamic query at run time.
// This will allow you to perform task at run time
?>
To Retrieve Meta
If you have saved something as a meta then
<?php
$meta_values = get_post_meta( $post_id, $key, $single );
?>
To Retrieve Child Post
If you want to retrieve child posts then
<?php
if ( have_posts() ) :
// Start the Loop.
while ( have_posts() ) : the_post();
// Do your stuff here such as below
the_title();
the_content();
endwhile;
else:
echo 'No Post Found';
endif;
?>
1) Write this function in function.php in your active template.
function leb_render_template() {
//some code removed for brevity
//$sql = 'YOUR_QUERY_CODE'
$sample_result = $wpdb->get_var($wpdb->prepare($sql));
return $my_template;
}
add_action('wp_ajax_leb_render_template', 'leb_render_template');
add_action('wp_ajax_nopriv_leb_render_template', 'leb_render_template');
2) Call function in your custom template.
<?php
/* Template Name: My Template*/
echo '<h1>Testing</h1>';
$result = leb_render_template();
print_r($result); // Print Your function output.
?>