apply_filters( 'list_table_primary_column', string $default, string $context )

Filters the name of the primary column for the current list table.

Contents

Parameters

$default string
Column name default for the specific list table, e.g. 'name'.
$context string
Screen ID for specific list table, e.g. 'plugins'.

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Source

File: wp-admin/includes/class-wp-list-table.php. View all references 

$column = apply_filters( 'list_table_primary_column', $default, $this->screen->id );

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Changelog

Changelog
Version Description
4.3.0 Introduced.

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User Contributed Notes

  1. Skip to note 1 content
    You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note
    Contributed by Andrija Naglic —

    A simple example for Users table and CPT table

    function my_list_table_primary_column( $default, $screen ) {//                                                             Alter the primary column in edit.php table(s)

	// if we want the 'Name' column to be the primary column, on Users screen
    if ( 'users' === $screen ) {
        $default = 'name';
    }
    
	// if we want to set the primary column for CPT
    if ( 'edit-my_custom_post_type' === $screen ) {
        $default = 'my_custom_column_name';
    }
    
    return $default;
}
add_filter( 'list_table_primary_column', 'my_list_table_primary_column', 10, 2 );

    For further management of columns, check:

    https://developer.wordpress.org/reference/hooks/manage_post_type_posts_columns/
    To add/remove/rename columns

    https://developer.wordpress.org/reference/hooks/manage_post-post_type_posts_custom_column/
    To set the custom column values

  2. Skip to note 2 content
    You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note
    Contributed by Ramon Ahnert —

    If you’re adding a column in the first position, it’s important to set this column as primary because WordPress has CSS rules that are applied for columns after the primary column. Otherwise, the list table can render with some layout issues.

    Example of CSS rule used by WordPress:

    .wp-list-table tr:not(.inline-edit-row):not(.no-items) td.column-primary~td:not(.check-column)

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