The context of your code that fails isn’t entirely clear, but it’s failing because get_the_ID() won’t return a post ID when run on the init hook, because the main query hasn’t been executed yet. If you have a look at the Action Reference, wp is the earliest action where you can access the current query’s … Read more
The function signature for update_post_meta() looks as follows: update_post_meta( int $post_id, string $meta_key, mixed $meta_value, mixed $prev_value=”” ) So instead of update_post_meta( $post ); you need to use update_post_meta( $post->ID, ‘my_post_meta_key’, $content_you_want_to_add ); I can only assume that you want to add this description to post meta. For that you’d use update_post_meta( $post->ID, ‘_my_post_description’, $entry[1] … Read more
To be honest, you should never use a PHP file as action attribute for a form in WordPress. WordPress already has API for this and you should use this instead. Why? Because it’s always better if your app/site has only one entry point (or as few as possible). And it’s always a bad idea to … Read more
set_query_var doesn’t seem to work on init hook
Lisandro, in case you are still having these issues – or anyone else ends up on this page – the following. Like Jan pointed out these issues have to do with the charsets. In most cases the charset definition in wp-config.php must be UTF8, just like the variable for charset in wp admin read settings. … Read more
The process can be done by posting the form to the current page, and then using those values from the $_POST object to determine the next form. In the simplest example, a hidden input named “page” can increase its value on each step. Set the value of additional hidden inputs with the data from $_POST … Read more
Dynamic dropdown custom post list based on dropdown selection
Like I said in the comment, this can be solved by using two dropdowns. Additionally I already hinted you to an answer of mine doing this for a simple, one level, non conditional category selection. Category dropdowns can easily constructed with wordpress by making use of wp_dropdown_categories. To make it work as actual selection handed … Read more
Kind of – I would suggest using init. This would probably be the best way of doing it since you can process the form as described below. wp_head would work though. Also, you should make sure you are making necessary checks with ‘nonces’. I suggest the init hook as you can employ something similar to … Read more
Firstly, never send the browser directly to a PHP file in your theme or plugin. It’s a security hole and leads to a very fragile setup. For example: The file will work even if the theme is deactivated and will work for all sites on an install, not just those it’s enabled for The file … Read more