I would look into a Booking Plugin (https://wordpress.org/plugins/booking/, for example) or if you need to collect information from users look no further than Gravity Forms(http://gravityforms.com) or Ninja Forms(http://ninjaforms.com). @TheDeadMedic is correct, you should not use add_options_page() for front-end pages.
The init action will fire once on every page load. PHP doesn’t maintain state between requests. If you want to run something once and never again forever unto eternity, you need to store something that persists between requests, like an option in the database, and check that before doing that one-time thing.
The map_meta_cap function handles context arguments generically – you can give it anything and it’ll happily pass it down the chain. It’s only particular capabilities like edit_post that expect the argument to be an integer, but even then it’s up to the caller to pass an appropriate value. Here’s where you get your string/integer mashups … Read more
Note that with the following: add_filter (‘comments_template’, ‘fbcommentbox’, 100); we expect fbcommentbox() to return the path to the new comments template file. The default is the path of comments.php. If you create the fbcommentbox.php file in your theme, then you could try: add_filter( ‘comments_template’, ‘fbcommentbox’, 100); function fbcommentbox( $theme_template ) { // Path to our … Read more
If you want to redirect, a good event to use is template_redirect: add_action( ‘template_redirect’, ‘my_page_template_redirect’ ); function my_page_template_redirect() { // You can skip is_user_logged_in() if checking the user capability if( is_page( 1234 ) && ! current_user_can( ‘do_something_special’ ) ) { $redirect_to = ‘http://example.com/redirection-page’; // Default code status for redirection using wp_redirect is 302 // If … Read more
its a little clumsy but you could combine what you are already doing with the ‘untrashed_post’ hook which fires after the post has been untrashed here are the rough steps: use ‘untrash_post’ hook to do your checking (like you are now) if you need to cancel the untrash, store a flag in post meta with … Read more
This is how I bootstrapped youtube embeds in one of my projects. /** * Responsive Youtube embeds. */ add_filter( ’embed_oembed_html’, function( $html, $url, $attr, $post_ID ) { if ( false !== stripos( $html, ‘<iframe ‘ ) && false !== stripos( $html, ‘.youtube.com/embed’ ) ) { $html = sprintf(‘<div class=”embed-responsive embed-responsive-16by9″>%s</div>’, $html ); } return $html; … Read more
In the context of official plugin repository this is very explicitly forbidden by the guidelines (emphasis mine): 7. No “phoning home” without user’s informed consent. This seemingly simple rule actually covers several different aspects: No unauthorized collection of user data. For example, sending the admin’s email address back to your own servers without permission of … Read more
You should create a small custom function to check the current post (page or other post type) if is parent exist, like the follow function. /** * if the post is a subpage for ID. * * $post object The post. * * return boolean */ function is_child( $post ) { // If is sub_post … Read more
When shortcodes are evaluated, the header of the site has already been assembled. So if the shortcode wants to enqueue a script it must do so in the footer (by setting the last parameter to wp_enqueue_script to true. At this point you’re still not too late to prevent the file from actually being included in … Read more