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<?php |
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/* |
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* When these hooks fire, check each item in the invoice, and set the stock of its parent, children and siblings to the same. |
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*/ |
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function item_stock_level_sync_dbg_log( $data ) { |
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// error_log( print_r( $data, true ) ); |
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} |
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add_action( 'updated_postmeta', 'sync_related_items_stock_level', 10, 4 ); |
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function sync_related_items_stock_level( $meta_id, $post_id, $meta_key, $meta_value ) { |
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if ( $meta_key !== '_stock' || get_post_type( $post_id ) !== 'wpi_item' ) { |
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return; |
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} |
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item_stock_level_sync_dbg_log( "Setting stock of item ID {$post_id} to {$meta_value}" ); |
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// if this item has a parent and the parent's metadata isn't being updated, just update the meta value of the parent (which will trigger updating of all its children recursively) |
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// otherwise, update the stock of all its children (which will trigger updating their children), while indicating this was done by the parent |
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$parent = get_post_parent( $post_id ); |
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if ( $parent && ! get_post_meta( $parent->ID, '_stock_is_locked', true ) ) { |
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// it has a parent and this call wasn't triggered by the parent's stock level update => just update the parent's stock |
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item_stock_level_sync_dbg_log( "Updating parent only" ); |
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update_post_meta( $parent->ID, '_stock', $meta_value ); |
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} else { |
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// either no parent, or this call was triggered by the parent's stock level update => ignore parent and siblings, and only update children |
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item_stock_level_sync_dbg_log( "Updating children only" ); |
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update_post_meta( $post_id, '_stock_is_locked', true ); |
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$children = get_children( array( |
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'post_parent' => $post_id, |
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'post_type' => 'wpi_item' |
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) ); |
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foreach ( $children as $child ) { |
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update_post_meta( $child->ID, '_stock', $meta_value ); |
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} |
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update_post_meta( $post_id, '_stock_is_locked', false ); |
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} |
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} |
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?> |
