wordpress将自定义列添加到自定义帖子类型

Question

I am currently working with WooCommerce, a eCommerce plugin for WordPress. WooCommerce products get setup in a new post-type called product. I have the following code which adds a custom column to the edit screen for this post type:

add_filter( 'manage_edit-product_columns', 'my_edit_product_columns' ) ;
function my_edit_product_columns( $columns ) {
$columns = array(
    'myfield' => __( 'My field' )
);
return $columns;
}

This works fine, but unfortunatley it add's it as the last column. Is there a way to order the columns? I would like this column to be directly after the "Price Column"

Answer 1

$columns that is being passed to your function my_edit_product_columns is an array of all of the existing columns. You can replace the entire thing or use any standard array manipulation to change the columns & column order.

For example, if you wanted to specify the columns you would do something like (taken from an events custom post type I use):

$columns = array(  
                "cb" => "<input type=\"checkbox\" />",
                "title" => "Event Name",  
                "event_date" => "Date",   
                "start_time"=>"Time",
             );  

So if you simply print_r($columns) to see what it currently has, you could manually reorder it.

To insert your column at a specific position in the existing $columns array use:

# Insert at offset 2
$offset = 2;
$newArray = array_slice($columns, 0, $offset, true) +
        array('new_column_id' => 'New Column Name') +
        array_slice($columns, $offset, NULL, true);

See this thread for more on that: array_splice() for associative arrays

//ADDED

I just tested this out locally on a custom post type I have in use called products. This code works fine for me. The offset starts with column 1, so to make my new column be the second one, I set offset at 2.

   public function productsListColumns($columns){
    $columns = array(  
                "cb" => "<input type=\"checkbox\" />",
                "title" => "Product",  
                "price" => "Price"
             );  
            $offset = 2;
            $newArray = array_slice($columns, 0, $offset, true) +
            array('new_column_id' => 'New Column Name') +
            array_slice($columns, $offset, NULL, true);
    return $newArray;  
}