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 1.2 2004/09/07 13:40:10 rich Exp $
   5  *)
   6
   7 open Apache
   8 open Registry
   9 open Cgi
  10 open Printf
  11
  12 open Merjisforwiki
  13
  14 open Cocanwiki
  15 open Cocanwiki_template
  16 open Cocanwiki_ok
  17
  18 let run r (q : cgi) (dbh : Dbi.connection) (hostid, hostname, _) _ =
  19   let id = int_of_string (q#param "id") in
  20
  21   if q#param_true "yes" then (
  22     (* Get the name of the image. *)
  23     let sth = dbh#prepare_cached "select name_deleted from images
  24                                    where hostid = ? and id = ?" in
  25     sth#execute [`Int hostid; `Int id];
  26
  27     let name = sth#fetch1string () in
  28
  29     (* First delete any more recent versions of this image. *)
  30     let sth = dbh#prepare_cached "update images
  31                                      set name_deleted = name, name = null
  32                                    where hostid = ? and name = ?" in
  33     sth#execute [`Int hostid; `String name];
  34
  35     (* Now copy the old row, changing name_deleted back to name so the image
  36      * becomes live.
  37      *)
  38     let sth = dbh#prepare_cached "insert into images
  39                                   (hostid, name, image, width, height,
  40                                    alt, title, longdesc, class,
  41                                    mime_type, thumbnail, tn_width,
  42                                    tn_height, tn_mime_type, upload_date)
  43                                   select hostid, name_deleted, image,
  44                                          width, height, alt, title, longdesc,
  45                                          class, mime_type, thumbnail,
  46                                          tn_width, tn_height, tn_mime_type,
  47                                          upload_date
  48                                     from images
  49                                    where hostid = ? and id = ?" in
  50     sth#execute [`Int hostid; `Int id];
  51
  52     dbh#commit ();
  53
  54     (* Done. *)
  55     let buttons = [ ok_button "/_images" ] in
  56     ok ~title:"Image restored" ~buttons
  57       q "Image was restored successfully."
  58   ) else
  59     q#redirect ("http://" ^ hostname ^ "/_images")
  60
  61 let () =
  62   register_script run