The mbct_{$this->model->name}_column_output filter

This topic has 2 replies, 2 voices, and was last updated 1 year, 8 months ago by James Cooper.

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March 18, 2023 at 2:40 AM #41078

Participant

I'm using the mbct_{$this->model->name}_column_output filter to modify the output of a column for a custom model, however, the modified output is not displaying in the admin list table. Do you know why that might be?

Here is my code:


/**
 * Modify the output of the 'title' column for the 'import' custom model to include the 'edit' link.
 *
 * @param mixed  $output      Column output.
 * @param string $column_name Column name.
 * @param array  $item        Item data.
 * @param object $model       Model instance.
 *
 * @return mixed Modified column output.
 */
add_filter('mbct_import_column_output', 'bcc_modify_title_column_output', 10, 4);
function bcc_modify_title_column_output($output, $column_name, $item, $model) {
        
    if ($column_name === 'title') {
        $base_url = admin_url("admin.php?page=model-import");
        
        $edit_url = add_query_arg([
            'model-action' => 'edit',
            'model-id' => $item['ID'],
        ], $base_url);

        // Make the title a link to the 'edit' page.
        $output = sprintf('<a href="%s">%s</a>', esc_url($edit_url), esc_html($output));
    }
    
    return $output;
}

March 18, 2023 at 9:03 PM #41091

Peter

Moderator

Hello,

I've tried to run the code on my local site and see there are two issues:

- You should run the callback function with a higher priority like 99

add_filter('mbct_import_column_output', 'bcc_modify_title_column_output', 99, 4);

- You should return the HTML code instead of printing it out, because in the WordPress list table function, it is outputted by using echo state. Please check the file wp-admin/includes/class-wp-list-table.php line 1532. It should be:

// Make the title a link to the 'edit' page.
$output = '<a href="' . esc_url($edit_url) . '">' . $output . '</a>';

Let me know how it goes.

March 21, 2023 at 5:17 AM #41135

James Cooper

Participant

Perfect! Works great now!

Here is the updated code:


/**
 * Modify the output of the 'title' column for the 'import' custom model to include the 'edit' link.
 *
 * @param mixed  $output      Column output.
 * @param string $column_name Column name.
 * @param array  $item        Item data.
 * @param object $model       Model instance.
 *
 * @return mixed Modified column output.
 */
add_filter('mbct_import_column_output', 'bcc_modify_title_column_output', 99, 4);
function bcc_modify_title_column_output($output, $column_name, $item, $model)
{
    if ($column_name === 'title') {
        $base_url = admin_url('admin.php?page=model-import');

        $edit_url = add_query_arg(
            [
                'model-action' => 'edit',
                'model-id' => $item['ID'],
            ],
            $base_url
        );

        // Make the title a link to the 'edit' page.
        $output = '<a href="' . esc_url($edit_url) . '">' . $output . '</a>';
    }

    return $output;
}

Thank you Peter!

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