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Sorry if this is already answered on here. I looked around and couldn't see any answers to my question so I thought I'd post my own.

I'm building a plugin for a client that gathers customer feedback on a recent project that has been completed.

The admin would use the system to send a "prompt" to the customer asking them for their feedback with a link to a form on the site.

I have created a custom post type called "customer_prompts" which only has a title field and a few custom fields which are stored in a custom database table, not post meta.

Below is my code for the save_post action. It seems that when I hit publish, it does not fire the save_post action and only saves the title value to wp_posts.

add_action('save_post', 'save_prompt');
function save_prompt($post_id){
$post = get_post($post_id);

    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) 

    if ( 'customer_prompt' == $_POST['post_type'] ) 
        if ( !current_user_can( 'edit_page', $post_id ) )
        if ( !current_user_can( 'edit_post', $post_id ) )

    global $wpdb;

    $prompt_id = com_create_guid();
    $customer_feedback_name = $_POST['_sdg_customer_feedback_name'];
    $customer_feedback_email = $_POST['_sdg_customer_feedback_email'];
    $salesperson = $_POST['_sdg_salesperson'];

    $values = array(
        'id' => $prompt_id, 
        'sdg_customer_name' => $customer_feedback_name,
        'sdg_customer_email' => $customer_feedback_email,
        'sdg_salesperson' => $salesperson,
        'sdg_post_id' => $post->id

    $insert = $wpdb->insert($table_name, $values);

    if($insert) {
        mail($customer_feedback_email, 'hello', 'hello');


Any help would be greatly appreciated as I cannot work out what is going on here.

Thanks, Jamie.

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Does it work if you remove the tests for the post type and capabilities? There could be a logic error. – toscho Dec 10 '12 at 16:35
I tried commenting them out, still no luck. – JamieCassidy Dec 10 '12 at 16:43
try using first example from codex[1] [1]: codex.wordpress.org/Plugin_API/Action_Reference/save_post) – M-R Dec 10 '12 at 16:55
Tried that but still doesn't work. It seems that the save_post action is running when you create a new post from the sidebar, but doesn't run when you hit publish. I've tried a few different action hooks such as publish_post and edit_post but neither of those work. – JamieCassidy Dec 11 '12 at 9:06

The "save_post" action is only called when we actually changed something in the post page form. If we just press the update button, without changing anything, the "save_post" action is not called.

This is important if we are editing a custom post type where we had custom meta boxes. If we rely on the "save_post" action and only change stuff on our custom meta boxes, nothing will happen.

The solution is to use the "pre_post_update" action hook, instead of "save_post"


share|improve this answer

edit Have you tried placing print_r('hello world'); die(); after function save_prompt($post_id){ to make sure the function actually does get picked up by the action hook? /edit

Several Issue could be in play:

1: Your global wpdb needs to be at the very top of your function, before all your if conditional statements.

2: Your $_POST variables should have conditionals of if(isset($_POST['food')) to check if the data being posted is actually being set before reaching your function, otherwise is may be causing a fatal error, causing the data not to be entered to the DB.

3: Try global $post at the top of the function, then you can call the post's variables such as $post->post_type as an object through the $post variable.

4: Add $wpdb->print_errors; die(); after $insert = $wpdb->insert($table_name, $values); incase your DB query is incorrect.

Hopefully one of those should fix your problem.

share|improve this answer
Taking a global variable into the function scope must happen before it is used, but not necessary at the top of a function. – toscho Dec 11 '12 at 9:53
For best practices though, came across several instances where globals have failed for not being at the top of a function. – Caleuanhopkins Dec 11 '12 at 10:04
I did try echoing something at the very top of the function which did appear at the very top of the page after clicking "Add new" on the sidebar but once you click publish this disappears as though the function is not being fired when publish is clicked. I tried all your other suggestions and still no luck. I think it may be a case of the function not being fired at all but can't work out why. – JamieCassidy Dec 11 '12 at 12:00

First off, I would suggest setting up your WordPress site to be easy to debug http://codex.wordpress.org/Debugging_in_WordPress

That way, it's easy to see stuff ;)

For action hook, I believe you need to hook it like this:

add_action('save_post', 'save_prompt', 10, 2);
function save_prompt( $post_id, $post ){
//do whatever

the save_post hook passes 2 arguments.

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