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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 57 | wp_add_dashboard_widget( 'dashboard_primary', __( 'WordPress News' ), 'wp_dashboard_primary' ); |
| 58 | |
| 59 | // Hook to register new widgets |
| 60 | // Filter widget order |
| 61 | if ( is_network_admin() ) { |
| 62 | do_action( 'wp_network_dashboard_setup' ); |
| 63 | $dashboard_widgets = apply_filters( 'wp_network_dashboard_widgets', array() ); |
| 64 | } elseif ( is_user_admin() ) { |
| 65 | do_action( 'wp_user_dashboard_setup' ); |
| 66 | $dashboard_widgets = apply_filters( 'wp_user_dashboard_widgets', array() ); |
| 67 | } else { |
| 68 | do_action( 'wp_dashboard_setup' ); |
| 69 | $dashboard_widgets = apply_filters( 'wp_dashboard_widgets', array() ); |
| 70 | } |
| 71 | |
| 72 | foreach ( $dashboard_widgets as $widget_id ) { |
| 73 | $name = empty( $wp_registered_widgets[$widget_id]['all_link'] ) ? $wp_registered_widgets[$widget_id]['name'] : $wp_registered_widgets[$widget_id]['name'] . " <a href='{$wp_registered_widgets[$widget_id]['all_link']}' class='edit-box open-box'>" . __('View all') . '</a>'; |
| 74 | wp_add_dashboard_widget( $widget_id, $name, $wp_registered_widgets[$widget_id]['callback'], $wp_registered_widget_controls[$widget_id]['callback'] ); |
| 75 | } |