diff options
Diffstat (limited to 'admin/include/functions.php')
| -rw-r--r-- | admin/include/functions.php | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/admin/include/functions.php b/admin/include/functions.php index 44d32f5dd..82c0b4804 100644 --- a/admin/include/functions.php +++ b/admin/include/functions.php @@ -52,11 +52,16 @@ DELETE FROM '.SITES_TABLE.' // The function delete_categories deletes the categories identified by the // (numeric) key of the array $ids. It also deletes (in the database) : -// - all the elements of the category (delete_elements, see further) +// - all the elements physically linked to the category (delete_elements, see further) // - all the links between elements and this category // - all the restrictions linked to the category // The function works recursively. -function delete_categories($ids) +// +// the $photo_deletion_mode is for photos virtually linked to the categorty +// * no_delete : delete no photo, may create orphans +// * delete_orphans : delete photos that are no longer linked to any category +// * force_delete : delete photos even if they are linked to another category +function delete_categories($ids, $photo_deletion_mode='no_delete') { if (count($ids) == 0) { @@ -67,7 +72,7 @@ function delete_categories($ids) // sub-categories must be so $ids = get_subcat_ids($ids); - // destruction of all the related elements + // destruction of all photos physically linked to the category $query = ' SELECT id FROM '.IMAGES_TABLE.' @@ -82,6 +87,38 @@ SELECT id } delete_elements($element_ids); + // now, should we delete photos that are virtually linked to the category? + if ('delete_orphans' == $photo_deletion_mode or 'force_delete' == $photo_deletion_mode) + { + $query = ' +SELECT + DISTINCT(image_id) + FROM '.IMAGE_CATEGORY_TABLE.' + WHERE category_id IN ('.implode(',', $ids).') +;'; + $image_ids_linked = array_from_query($query, 'image_id'); + + if ('delete_orphans' == $photo_deletion_mode) + { + $query = ' +SELECT + DISTINCT(image_id) + FROM '.IMAGE_CATEGORY_TABLE.' + WHERE image_id IN ('.implode(',', $image_ids_linked).') + AND category_id NOT IN ('.implode(',', $ids).') +;'; + $image_ids_not_orphans = array_from_query($query, 'image_id'); + $image_ids_to_delete = array_diff($image_ids_linked, $image_ids_not_orphans); + } + + if ('force_delete' == $photo_deletion_mode) + { + $image_ids_to_delete = $image_ids_linked; + } + + delete_elements($image_ids_to_delete, true); + } + // destruction of the links between images and this category $query = ' DELETE FROM '.IMAGE_CATEGORY_TABLE.' |