WordPress: Saving post metadata entry in the admin post panel

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I’m working on a plugin, where I have defined a hook which is supposed to create a custom post field in the admin panel. The code for the same: 

    //ADDING CUSTOM FIELDS IN ADMIN PANEL
add_action('add_meta_boxes', 'jericho_meta');
add_action('save_post', 'jericho_saved');

function jericho_meta()
{
    add_meta_box('jericho_name', 'Favorite PPV', 'jericho_handler', 'post');
}

function jericho_handler()
{   
    $value = get_post_custom($post->ID);
    $namey = esc_attr($value['jericho_name'][0]);
    echo '<label for = "jericho_name">Favorite PPV</label><input type = "text" id = "jericho_name" name = "jericho_name" value = "'.$namey.'" />';

}

function jericho_saved()
{
    if(defined('DOING_AUTOSAVE') && DOING_AUTOSAVE)
    {
        return;
    }

    if(!current_user_can('edit_post'))
    {
        return;
    }

    if(isset($_POST['jericho_name']))
    {
        update_post_meta($post_id, 'jericho_name', $_POST['jericho_name']);
    }
}

This code generates a custom post field in the admin post panel as shown in the screenshot below:

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enter image description here

However, when I enter a value in that text field and click on Update, the input value never gets saved inside the text field when I try checking the field on refreshing the page.

What seems to be wrong with my code?

EDIT 1:

I have updated my code and added a new action named save_post and defined its corresponding function. However, the problem seems to be with the way I have defined the input field itself, because when I tried inspecting the text field’s element, this is what I got: 

<input type="text" id="jericho_name" name="jericho_name" value>
Post Views: 2

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1 comment

  1. Based on the code you provided i can see that you are not registering callback/trigger for saving post meta data.

    You need to handle this by yourself (will not be handled automaticly).
    Currently, what you did is you tied “jericho_handler()” function to render data when post edit page renders. And that works just fine, as it should.

    You need to add additional function which will be triggered on ‘save_post’ where you will handle saving data into the database.

    add_action( 'save_post', 'cd_meta_box_save' );
function cd_meta_box_save( $post_id )
{
    // Bail if we're doing an auto save
    if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;

    // if our nonce isn't there, or we can't verify it, bail
    if( !isset( $_POST['meta_box_nonce'] ) || !wp_verify_nonce( $_POST['meta_box_nonce'], 'my_meta_box_nonce' ) ) return;

    // if our current user can't edit this post, bail
    if( !current_user_can( 'edit_post' ) ) return;

    // now we can actually save the data
    $allowed = array( 
        'a' => array( // on allow a tags
            'href' => array() // and those anchors can only have href attribute
        )
    );

    // Make sure your data is set before trying to save it
    if( isset( $_POST['my_meta_box_text'] ) )
        update_post_meta( $post_id, 'my_meta_box_text', wp_kses( $_POST['my_meta_box_text'], $allowed ) );

    if( isset( $_POST['my_meta_box_select'] ) )
        update_post_meta( $post_id, 'my_meta_box_select', esc_attr( $_POST['my_meta_box_select'] ) );

    // This is purely my personal preference for saving check-boxes
    $chk = isset( $_POST['my_meta_box_check'] ) && $_POST['my_meta_box_select'] ? 'on' : 'off';
    update_post_meta( $post_id, 'my_meta_box_check', $chk );
}
?>

    Please check detail tutorial over here. Code i pasted above is from this link.

    If you are already registering this handler and you are still encountering issues, please update your question with other parts of code as well.

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