I have some code that generates a dropdown list of all my post files. I would like to add this dropdown to the top of every post page, right before the post content.
What's the correct hook/action to do so?
custom-functions.php:
<?php
function create_post_dropdown($titles){
?>
<div id="article-choice">
<h3>Choose an Article, or browse below</h3>
<select onchange="if (this.value) window.location.href=this.value">
<?php
foreach($titles as $title => $url){
echo "<option value=" . $url . ">" . $title . "</option>";
}
?>
</select>
</div>
<?php
}
add_action('__after_header', 'create_post_dropdown');
function add_dropdown_to_posts(){
$args = [
'post_type' => 'post',
'post_status' => 'publish',
'posts_per_page' => -1
];
$posts = new WP_Query( $args );
$titles = get_post_titles($args);
if (get_post_type() == "post"){
$title = $post->post_title; // get_the_title();
$title = create_post_dropdown($titles) . "<br>" . $title;
}
return $title;
}
add_filter('the_content', 'add_dropdown_to_posts');
The idea is that when a post page is opened/viewed, this dropdown (made via create_post_dropdown) will be added before the post content.
I have some code that generates a dropdown list of all my post files. I would like to add this dropdown to the top of every post page, right before the post content.
What's the correct hook/action to do so?
custom-functions.php:
<?php
function create_post_dropdown($titles){
?>
<div id="article-choice">
<h3>Choose an Article, or browse below</h3>
<select onchange="if (this.value) window.location.href=this.value">
<?php
foreach($titles as $title => $url){
echo "<option value=" . $url . ">" . $title . "</option>";
}
?>
</select>
</div>
<?php
}
add_action('__after_header', 'create_post_dropdown');
function add_dropdown_to_posts(){
$args = [
'post_type' => 'post',
'post_status' => 'publish',
'posts_per_page' => -1
];
$posts = new WP_Query( $args );
$titles = get_post_titles($args);
if (get_post_type() == "post"){
$title = $post->post_title; // get_the_title();
$title = create_post_dropdown($titles) . "<br>" . $title;
}
return $title;
}
add_filter('the_content', 'add_dropdown_to_posts');
The idea is that when a post page is opened/viewed, this dropdown (made via create_post_dropdown) will be added before the post content.
One way to do that is to have the custom dropdown function return the custom html. Then you can call it inside your add_dropdown_to_posts and put the returned content into a helper variable. After that just prepend the custom html to the $content variable that the the_content filter provides.
Like this,
function my_custom_dropdown_html() {
return '<html stuff here>'; // you could put your html also in a variable and then return that.
}
function add_dropdown_html_before_the_content($content) {
$dropdown = my_custom_dropdown_html();
// if statement just to be safe - e.g you change the custom function output to something else than string of html and forget you've used it here
if ( $dropdown && is_string( $dropdown ) ) {
$content = $dropdown . $content; // prepend custom html to content
}
return $content;
}
add_filter( 'the_content', 'add_dropdown_html_before_the_content' );