(* COCANWIKI - a wiki written in Objective CAML.
* Written by Richard W.M. Jones <rich@merjis.com>.
* Copyright (C) 2004 Merjis Ltd.
- * $Id: edit.ml,v 1.16 2004/10/09 09:41:38 rich Exp $
+ * $Id: edit.ml,v 1.24 2004/11/01 12:57:53 rich Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
open Cocanwiki_emailnotify
open Cocanwiki_diff
open Cocanwiki_strings
-
-(* Page of title. *)
-type pt_t = Page of string | Title of string
-
-(* We keep an "internal model" of the page - see build_internal_model ()
- * below.
- *)
-type model_t = {
- id : int; (* Original page ID (0 = none). *)
- pt : pt_t; (* Page of title (only used if id=0) *)
- description : string; (* Description. *)
- redirect : string; (* Redirect to ("" = none). *)
- contents : (string * string * string) list;
- (* (sectionname, divname, content)
- * for each section. *)
-}
+open Cocanwiki_pages
let run r (q : cgi) (dbh : Dbi.connection) hostid {hostname = hostname} user =
let template = get_template dbh hostid "edit.html" in
* a model from it.
*)
let begin_editing page =
- (* Pull out the page itself from the database. *)
- let sth = dbh#prepare_cached "select id, title, description,
- coalesce (redirect, '')
- from pages
- where hostid = ? and url = ?" in
- sth#execute [`Int hostid; `String page];
-
- let pageid, title, description, redirect =
- match sth#fetch1 () with
- [`Int pageid; `String title; `String description; `String redirect]->
- pageid, title, description, redirect
- | _ -> assert false in
-
- (* Get the sections. *)
- let sth = dbh#prepare_cached "select coalesce (sectionname, ''),
- content,
- coalesce (divname, '')
- from contents
- where pageid = ?
- order by ordering" in
- sth#execute [`Int pageid];
-
- let contents =
- sth#map (function
- | [`String sectionname; `String content; `String divname] ->
- sectionname, divname, content
- | _ -> assert false) in
-
- let model = { id = pageid;
- pt = Page page;
- description = description;
- redirect = redirect;
- contents = contents; } in
-
+ let model = load_page dbh hostid ~url:page () in
model_to_template model template
in
q "The page name supplied is too short or invalid.";
return () in
- let model = { id = 0;
- pt = pt;
- description = title;
- redirect = "";
- contents = [] } in
+ let model = match pt with
+ Page url -> new_page pt
+ | Title title -> new_page_with_title title in
model_to_template model template
in
if no_errors then (
(* No errors, so we can save the page ... *)
- (* Get the IP address of the user, if available. *)
- let logged_ip =
- try `String (Connection.remote_ip (Request.connection r))
- with Not_found -> `Null in
+ let url, pageid =
+ try
+ save_page dbh hostid ~user ~r model
+ with
+ SaveURLError ->
+ error ~back_button:true ~title:"Page exists"
+ q ("While you were editing that page, it looks " ^
+ "like another user created the same page.");
+ return ()
+
+ | SaveConflict (new_version, old_version, url, css) ->
+ (* Edited by someone else ... Get the other's changes. *)
+ let other_diff, _ =
+ get_diff dbh hostid url ~old_version ~version:new_version () in
+
+ (* Synthesize our own changes. *)
+ let old_page = get_version_for_diff dbh old_version in
+ let new_page =
+ page_for_diff css (List.map (fun (sectionname, _, content) ->
+ sectionname, content) model.contents) in
+ let our_diff = diff_cmd old_page new_page in
- let logged_user =
- match user with
- | User (id, _, _) -> `Int id
- | _ -> `Null in
+ (* Fill out the conflict template. *)
+ template_conflict#set "other_diff" other_diff;
+ template_conflict#set "our_diff" our_diff;
+ template_conflict#set "old_version" (string_of_int old_version);
+ template_conflict#set "new_version" (string_of_int new_version);
+ template_conflict#set "url" url;
- (* Get redirect. *)
- let redirect =
- if model.redirect = "" then `Null
- else `String model.redirect in
+ q#template template_conflict;
+ return () in
- let url, pageid =
- (* Creating a new page (id = 0)? If so, we're just going to insert
- * a new row, which is easy.
+ (* General email notification of page edits. Send an email to
+ * anyone in the page_emails table who has a confirmed address
+ * and who hasn't received an email already today.
+ *)
+ let sth = dbh#prepare_cached "select email, opt_out from page_emails
+ where hostid = ? and url = ?
+ and pending is null
+ and last_sent < current_date" in
+ sth#execute [`Int hostid; `String url];
+
+ let addrs = sth#map (function [`String email; `String opt_out] ->
+ email, opt_out
+ | _ -> assert false) in
+
+ if addrs <> [] then (
+ (* Construct the email. *)
+ template_email#set "hostname" hostname;
+ template_email#set "page" url;
+
+ let subject =
+ "Site notice: " ^ hostname ^ "/" ^ url ^ " has been updated" in
+
+ (* Send each email individually (they all have different opt out
+ * links).
*)
- if model.id = 0 then (
- (* Create the page title or URL. *)
- let url, title =
- match model.pt with
- Page url -> url, url
- | Title title ->
- match Wikilib.generate_url_of_title dbh hostid title with
- Wikilib.GenURL_OK url -> url, title
- | Wikilib.GenURL_Duplicate url ->
- error ~back_button:true ~title:"Page exists"
- q ("While you were editing that page, it looks " ^
- "like another user created the same page.");
- return ()
- | _ ->
- assert false (* This should have been detected in
- * begin_editing_new.
- *) in
-
- let sth = dbh#prepare_cached "insert into pages (hostid, url, title,
- description, logged_ip, logged_user,
- redirect)
- values (?, ?, ?, ?, ?, ?, ?)" in
- sth#execute [`Int hostid; `String url; `String title;
- `String model.description; logged_ip; logged_user;
- redirect];
-
- let pageid = sth#serial "pages_id_seq" in
-
- (* Create the page contents. *)
- let sth = dbh#prepare_cached "insert into contents (pageid,
- ordering, sectionname, divname,
- content)
- values (?, ?, ?, ?, ?)" in
- let ordering = ref 0 in (* Creating new ordering. *)
- List.iter (fun (sectionname, divname, content) ->
- let divname =
- if string_is_whitespace divname then `Null
- else `String divname in
- let sectionname =
- if string_is_whitespace sectionname then `Null
- else `String sectionname in
- incr ordering; let ordering = !ordering in
- sth#execute [`Int pageid; `Int ordering;
- sectionname; divname;
- `String content])
- model.contents;
-
- url, pageid
- )
- (* Otherwise it's an old page which we're updating. *)
- else (
- (* Pull out fields from the database. *)
- let sth = dbh#prepare_cached "select creation_date,
- coalesce (url, url_deleted),
- title, css
- from pages
- where hostid = ? and id = ?" in
- sth#execute [`Int hostid; `Int model.id];
-
- let creation_date, url, title, css =
- match sth#fetch1 () with
- [ creation_date; `String url; `String title; css ] ->
- creation_date, url, title, css
- | _ -> assert false in
-
- (* Has someone else edited this page in the meantime? *)
- let sth = dbh#prepare_cached "select max(id) from pages
- where hostid = ? and url = ?" in
- sth#execute [`Int hostid; `String url];
-
- let max_id = sth#fetch1int () in
- let edited = max_id <> model.id in
-
- if edited then (
- (* Edited by someone else ... Get the other's changes. *)
- let other_diff, _ =
- get_diff dbh hostid url
- ~old_version:model.id ~version:max_id () in
-
- (* Synthesize our own changes. *)
- let old_page = get_version_for_diff dbh model.id in
- let new_page =
- let css = match css with
- `Null -> "" | `String css -> css
- | _ -> assert false in
- page_for_diff css (List.map (fun (sectionname, _, content) ->
- sectionname, content) model.contents) in
- let our_diff = diff_cmd old_page new_page in
-
- (* Fill out the conflict template. *)
- template_conflict#set "other_diff" other_diff;
- template_conflict#set "our_diff" our_diff;
- template_conflict#set "old_version" (string_of_int model.id);
- template_conflict#set "new_version" (string_of_int max_id);
- template_conflict#set "url" url;
-
- q#template template_conflict;
- return ()
- );
-
- (* Defer the pages_redirect_cn constraint because that would
- * temporarily fail on the next UPDATE.
- *)
- let sth =
- dbh#prepare_cached
- "set constraints pages_redirect_cn, sitemenu_url_cn,
- page_emails_url_cn, links_from_cn deferred" in
- sth#execute [];
-
- (* Mark the old page as deleted. NB. There is a small race
- * condition here because PostgreSQL doesn't do isolation
- * properly. If a user tries to visit this page between the
- * delete and the creation of the new page, then they'll get
- * a page not found error. (XXX)
- *)
- let sth = dbh#prepare_cached "update pages set url_deleted = url,
- url = null
- where hostid = ? and id = ?" in
- sth#execute [`Int hostid; `Int model.id];
-
- (* Create the new page. *)
- let sth = dbh#prepare_cached "insert into pages (hostid, url, title,
- description, creation_date, logged_ip,
- logged_user, redirect, css)
- values (?, ?, ?, ?, ?, ?, ?, ?, ?)" in
- sth#execute [`Int hostid; `String url; `String title;
- `String model.description; creation_date; logged_ip;
- logged_user; redirect; css];
-
- (* New page ID <> old page ID model.id. *)
- let pageid = sth#serial "pages_id_seq" in
-
- (* Create the page contents. *)
- let sth = dbh#prepare_cached "insert into contents (pageid,
- ordering, sectionname, divname,
- content)
- values (?, ?, ?, ?, ?)" in
- let ordering = ref 0 in (* Creating new ordering. *)
- List.iter (fun (sectionname, divname, content) ->
- let divname =
- if string_is_whitespace divname then `Null
- else `String divname in
- let sectionname =
- if string_is_whitespace sectionname then `Null
- else `String sectionname in
- incr ordering; let ordering = !ordering in
- sth#execute [`Int pageid; `Int ordering;
- sectionname; divname;
- `String content])
- model.contents;
-
- (* General email notification of page edits. Send an email to
- * anyone in the page_emails table who has a confirmed address
- * and who hasn't received an email already today.
- *)
- let sth = dbh#prepare_cached "select email, opt_out from page_emails
- where hostid = ? and url = ?
- and pending is null
- and last_sent < current_date" in
- sth#execute [`Int hostid; `String url];
-
- let addrs = sth#map (function [`String email; `String opt_out] ->
- email, opt_out
- | _ -> assert false) in
-
- if addrs <> [] then (
- (* Construct the email. *)
- template_email#set "hostname" hostname;
- template_email#set "page" url;
-
- let subject =
- "Site notice: " ^ hostname ^ "/" ^ url ^ " has been updated" in
-
- (* Send each email individually (they all have different opt out
- * links).
- *)
- List.iter (fun (to_addr, opt_out) ->
- template_email#set "opt_out" opt_out;
- let body = template_email#to_string in
- Sendmail.send_mail ~subject
- ~to_addr:[to_addr] ~body ())
- addrs
- );
-
- (* Update the database to record when these emails were sent. *)
- let sth = dbh#prepare_cached "update page_emails
- set last_sent = current_date
- where hostid = ? and url = ?
- and pending is null" in
- sth#execute [`Int hostid; `String url];
-
- url, pageid
- ) in
-
- (* Keep the links table in synch. *)
- Cocanwiki_links.update_links_for_page dbh hostid url;
+ List.iter (fun (to_addr, opt_out) ->
+ template_email#set "opt_out" opt_out;
+ let body = template_email#to_string in
+ Sendmail.send_mail ~subject
+ ~to_addr:[to_addr] ~body ())
+ addrs
+ );
+
+ (* Update the database to record when these emails were sent. *)
+ let sth = dbh#prepare_cached "update page_emails
+ set last_sent = current_date
+ where hostid = ? and url = ?
+ and pending is null" in
+ sth#execute [`Int hostid; `String url];
(* Commit changes to the database. *)
dbh#commit ();
"Page: http://" ^ hostname ^ "/" ^ url ^ "\n\n" ^
diff in
- email_notify ~body ~subject dbh hostid;
+ email_notify ~body ~subject ~user dbh hostid;
(* Redirect back to the URL. *)
q#redirect ("http://" ^ hostname ^ "/" ^ url);
in
let cancel id =
- let sth = dbh#prepare_cached "select url from pages
- where hostid = ? and id = ?" in
- sth#execute [`Int hostid; `Int id];
- let url = sth#fetch1string () in
+ let url =
+ if id <> 0 then (
+ let sth = dbh#prepare_cached "select coalesce (url, url_deleted)
+ from pages
+ where hostid = ? and id = ?" in
+ sth#execute [`Int hostid; `Int id];
+ sth#fetch1string ()
+ ) else if q#param "pt_type" = "page" then
+ q#param "pt_value"
+ else
+ (* Create a new page, but the user hits the cancel button. Because
+ * we didn't save where they came from, we now have nowhere to
+ * go. So we redirect to the home page. XXX
+ *)
+ "" in
q#redirect ("http://" ^ hostname ^ "/" ^ url);
return ()
git.annexia.org / cocanwiki.git / blobdiff