uploads - Cannot attach media when capabilities added to custom post type

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I have a custom post type we have had active for a few months now and managed with the wordpress admin user. We decided to implement different levels of "vendor" with various fields available to them using the Advanced Custom Fields plugin.

I added the "capabilities" section below to the post type so i could manage capabilities with the "User role editor" plugin, however as soon as this code is added no user can upload and attached files, this is the error i get: "Sorry, you are not allowed to attach files to this post."

I can attach pre-uploaded files, and i can also attach files when i remove the capabilities code however then i cannot manage capabilities on a per-role basis.

Also the admin user is no longer capable of editing the existing vendor entries. I believe i need to set some roles in the theme functions file but i am not aware of which ones. I have enabled "upload files" capability for the user roles in question.

Code of the vendors registration is below:

function vendor() {

    $labels = array(
        'name'                  => _x( 'Vendors', 'Post Type General Name', 'vendor_text_domain' ),
        'singular_name'         => _x( 'Vendor', 'Post Type Singular Name', 'vendor_text_domain' ),
        'menu_name'             => __( 'Vendors', 'vendor_text_domain' ),
        'name_admin_bar'        => __( 'Vendors', 'vendor_text_domain' ),
        'archives'              => __( 'Vendor Archives', 'vendor_text_domain' ),
        'parent_item_colon'     => __( 'Parent Item:', 'vendor_text_domain' ),
        'all_items'             => __( 'All Vendors', 'vendor_text_domain' ),
        'add_new_item'          => __( 'Add New Vendor', 'vendor_text_domain' ),
        'add_new'               => __( 'Add New', 'vendor_text_domain' ),
        'new_item'              => __( 'New Vendor', 'vendor_text_domain' ),
        'edit_item'             => __( 'Edit Vendor', 'vendor_text_domain' ),
        'update_item'           => __( 'Update Vendor', 'vendor_text_domain' ),
        'view_item'             => __( 'View Vendor', 'vendor_text_domain' ),
        'search_items'          => __( 'Search Vendor', 'vendor_text_domain' ),
        'not_found'             => __( 'Not found', 'vendor_text_domain' ),
        'not_found_in_trash'    => __( 'Not found in Trash', 'vendor_text_domain' ),
        'featured_image'        => __( 'Featured Image', 'vendor_text_domain' ),
        'set_featured_image'    => __( 'Set featured image', 'vendor_text_domain' ),
        'remove_featured_image' => __( 'Remove featured image', 'vendor_text_domain' ),
        'use_featured_image'    => __( 'Use as featured image', 'vendor_text_domain' ),
        'insert_into_item'      => __( 'Insert into item', 'vendor_text_domain' ),
        'uploaded_to_this_item' => __( 'Uploaded to this item', 'vendor_text_domain' ),
        'items_list'            => __( 'Vendor list', 'vendor_text_domain' ),
        'items_list_navigation' => __( 'Vendor list navigation', 'vendor_text_domain' ),
        'filter_items_list'     => __( 'Filter items list', 'vendor_text_domain' ),
    );
    $args = array(
        'label'                 => __( 'Vendor', 'vendor_text_domain' ),
        'description'           => __( 'Individual Vendors', 'vendor_text_domain' ),
        'labels'                => $labels,
        'supports'              => array( 'title', 'editor', 'thumbnail', 'revisions', 'page-attributes', ),
        'taxonomies'            => array( 'post_tag' ),
        'hierarchical'          => false,
        'public'                => true,
        'show_ui'               => true,
        'show_in_menu'          => true,
        'menu_position'         => 5,
        'menu_icon'             => 'dashicons-store',
        'show_in_admin_bar'     => true,
        'show_in_nav_menus'     => true,
        'can_export'            => true,
        'upload_files'          => true,
        'has_archive'           => true,        
        'exclude_from_search'   => false,
        'publicly_queryable'    => true,
        'capability_type'       => 'post',
        'capabilities' => array(
          'edit_post'          => 'edit_vendor', 
          'read_post'          => 'read_vendor', 
          'delete_post'        => 'delete_vendor', 
          'edit_posts'         => 'edit_vendors', 
          'edit_others_posts'  => 'edit_others_vendors', 
          'publish_posts'      => 'publish_vendors',       
          'read_private_posts' => 'read_private_vendors', 
          'create_posts'       => 'create_vendor', 
          'upload_files'       => 'upload_vendor_files'
        ),
    );
    register_post_type( 'vendor', $args );
}

I have a custom post type we have had active for a few months now and managed with the wordpress admin user. We decided to implement different levels of "vendor" with various fields available to them using the Advanced Custom Fields plugin.

I added the "capabilities" section below to the post type so i could manage capabilities with the "User role editor" plugin, however as soon as this code is added no user can upload and attached files, this is the error i get: "Sorry, you are not allowed to attach files to this post."

I can attach pre-uploaded files, and i can also attach files when i remove the capabilities code however then i cannot manage capabilities on a per-role basis.

Also the admin user is no longer capable of editing the existing vendor entries. I believe i need to set some roles in the theme functions file but i am not aware of which ones. I have enabled "upload files" capability for the user roles in question.

Code of the vendors registration is below:

function vendor() {

    $labels = array(
        'name'                  => _x( 'Vendors', 'Post Type General Name', 'vendor_text_domain' ),
        'singular_name'         => _x( 'Vendor', 'Post Type Singular Name', 'vendor_text_domain' ),
        'menu_name'             => __( 'Vendors', 'vendor_text_domain' ),
        'name_admin_bar'        => __( 'Vendors', 'vendor_text_domain' ),
        'archives'              => __( 'Vendor Archives', 'vendor_text_domain' ),
        'parent_item_colon'     => __( 'Parent Item:', 'vendor_text_domain' ),
        'all_items'             => __( 'All Vendors', 'vendor_text_domain' ),
        'add_new_item'          => __( 'Add New Vendor', 'vendor_text_domain' ),
        'add_new'               => __( 'Add New', 'vendor_text_domain' ),
        'new_item'              => __( 'New Vendor', 'vendor_text_domain' ),
        'edit_item'             => __( 'Edit Vendor', 'vendor_text_domain' ),
        'update_item'           => __( 'Update Vendor', 'vendor_text_domain' ),
        'view_item'             => __( 'View Vendor', 'vendor_text_domain' ),
        'search_items'          => __( 'Search Vendor', 'vendor_text_domain' ),
        'not_found'             => __( 'Not found', 'vendor_text_domain' ),
        'not_found_in_trash'    => __( 'Not found in Trash', 'vendor_text_domain' ),
        'featured_image'        => __( 'Featured Image', 'vendor_text_domain' ),
        'set_featured_image'    => __( 'Set featured image', 'vendor_text_domain' ),
        'remove_featured_image' => __( 'Remove featured image', 'vendor_text_domain' ),
        'use_featured_image'    => __( 'Use as featured image', 'vendor_text_domain' ),
        'insert_into_item'      => __( 'Insert into item', 'vendor_text_domain' ),
        'uploaded_to_this_item' => __( 'Uploaded to this item', 'vendor_text_domain' ),
        'items_list'            => __( 'Vendor list', 'vendor_text_domain' ),
        'items_list_navigation' => __( 'Vendor list navigation', 'vendor_text_domain' ),
        'filter_items_list'     => __( 'Filter items list', 'vendor_text_domain' ),
    );
    $args = array(
        'label'                 => __( 'Vendor', 'vendor_text_domain' ),
        'description'           => __( 'Individual Vendors', 'vendor_text_domain' ),
        'labels'                => $labels,
        'supports'              => array( 'title', 'editor', 'thumbnail', 'revisions', 'page-attributes', ),
        'taxonomies'            => array( 'post_tag' ),
        'hierarchical'          => false,
        'public'                => true,
        'show_ui'               => true,
        'show_in_menu'          => true,
        'menu_position'         => 5,
        'menu_icon'             => 'dashicons-store',
        'show_in_admin_bar'     => true,
        'show_in_nav_menus'     => true,
        'can_export'            => true,
        'upload_files'          => true,
        'has_archive'           => true,        
        'exclude_from_search'   => false,
        'publicly_queryable'    => true,
        'capability_type'       => 'post',
        'capabilities' => array(
          'edit_post'          => 'edit_vendor', 
          'read_post'          => 'read_vendor', 
          'delete_post'        => 'delete_vendor', 
          'edit_posts'         => 'edit_vendors', 
          'edit_others_posts'  => 'edit_others_vendors', 
          'publish_posts'      => 'publish_vendors',       
          'read_private_posts' => 'read_private_vendors', 
          'create_posts'       => 'create_vendor', 
          'upload_files'       => 'upload_vendor_files'
        ),
    );
    register_post_type( 'vendor', $args );
}

• custom-post-types
• uploads
• user-roles
• capabilities

Share Improve this question asked Oct 2, 2017 at 9:58 Paul CullenPaul Cullen 11322 silver badges88 bronze badges 1

• Found the answer here: wordpress.stackexchange/a/231207/22510 – That Brazilian Guy Commented Mar 21, 2018 at 14:13

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1 Answer 1

Sorted by: Reset to default 2

You have assigned custom capabilities to post type, but did you assigned these capabilities to user roles or users? This is not done automatically, and adding custom caps to post types doesn't add those caps to the roles or users. You have two solutions:

1. Register post type without the 'capabilities' options, and it will fall back to default capabilities used by posts or pages.
2. Use some User Roles editor plugin to assign these new 'vendor' based capabilities to user roles you want to allow using them.

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