scripts/undelete_image.ml

   1 (* COCANWIKI scripts.
   2  * Written by Richard W.M. Jones <rich@merjis.com>.
   3  * Copyright (C) 2004 Merjis Ltd.
   4  * $Id: undelete_image.ml,v 1.1 2004/09/07 10:14:09 rich Exp $
   5  *)
   6
   7 open Apache
   8 open Registry
   9 open Cgi
  10 open Printf
  11
  12 open Cocanwiki
  13 open Cocanwiki_ok
  14
  15 open Merjisforwiki
  16
  17 let run r (q : cgi) (dbh : Dbi.connection) (hostid, hostname) _ =
  18   let id = int_of_string (q#param "id") in
  19
  20   if q#param_true "yes" then (
  21     (* Get the name of the image. *)
  22     let sth = dbh#prepare_cached "select name_deleted from images
  23                                    where hostid = ? and id = ?" in
  24     sth#execute [`Int hostid; `Int id];
  25
  26     let name = sth#fetch1string () in
  27
  28     (* First delete any more recent versions of this image. *)
  29     let sth = dbh#prepare_cached "update images
  30                                      set name_deleted = name, name = null
  31                                    where hostid = ? and name = ?" in
  32     sth#execute [`Int hostid; `String name];
  33
  34     (* Now copy the old row, changing name_deleted back to name so the image
  35      * becomes live.
  36      *)
  37     let sth = dbh#prepare_cached "insert into images
  38                                   (hostid, name, image, width, height,
  39                                    alt, title, longdesc, class,
  40                                    mime_type, thumbnail, tn_width,
  41                                    tn_height, tn_mime_type, upload_date)
  42                                   select hostid, name_deleted, image,
  43                                          width, height, alt, title, longdesc,
  44                                          class, mime_type, thumbnail,
  45                                          tn_width, tn_height, tn_mime_type,
  46                                          upload_date
  47                                     from images
  48                                    where hostid = ? and id = ?" in
  49     sth#execute [`Int hostid; `Int id];
  50
  51     dbh#commit ();
  52
  53     (* Done. *)
  54     let buttons = [ ok_button "/_images" ] in
  55     ok ~title:"Image restored" ~buttons
  56       q "Image was restored successfully."
  57   ) else
  58     q#redirect ("http://" ^ hostname ^ "/_images")
  59
  60 let () =
  61   register_script run