Send email notifications when people comment on diary entries. Closes #655.

app/controllers/diary_entry_controller.rb

@@ -20,6 +20,7 @@ class DiaryEntryController < ApplicationController
     @diary_comment = @entry.diary_comments.build(params[:diary_comment])
     @diary_comment.user = @user
     if @diary_comment.save
+      Notifier::deliver_diary_comment_notification(@diary_comment)
       redirect_to :controller => 'diary_entry', :action => 'view', :display_name => @entry.user.display_name, :id => @entry.id
     else
       render :action => 'view'

app/models/notifier.rb

@@ -63,6 +63,34 @@ class Notifier < ActionMailer::Base
                               :message_id => message.id)
   end
 
+  def diary_comment_notification(comment)
+    recipients comment.diary_entry.user.email
+    from "webmaster@openstreetmap.org"
+    subject "[OpenStreetMap] #{comment.user.display_name} commented on your diary entry"
+    headers "Auto-Submitted" => "auto-generated"
+    body :to_user => comment.diary_entry.user.display_name,
+         :from_user => comment.user.display_name,
+         :body => comment.body,
+         :subject => comment.diary_entry.title,
+         :readurl => url_for(:host => SERVER_URL,
+                             :controller => "diary_entry",
+                             :action => "view",
+                             :display_name => comment.diary_entry.user.display_name,
+                             :id => comment.diary_entry.id,
+                             :anchor => "comment#{comment.id}"),
+         :commenturl => url_for(:host => SERVER_URL,
+                                :controller => "diary_entry",
+                                :action => "view",
+                                :display_name => comment.diary_entry.user.display_name,
+                                :id => comment.diary_entry.id,
+                                :anchor => "newcomment"),
+         :replyurl => url_for(:host => SERVER_URL,
+                              :controller => "message",
+                              :action => "new",
+                              :user_id => comment.user.id,
+                              :title => "Re: #{comment.diary_entry.title}")
+  end
+
   def friend_notification(friend)
     befriender = User.find_by_id(friend.user_id)
     befriendee = User.find_by_id(friend.friend_user_id)

app/views/diary_entry/_diary_comment.rhtml

@@ -1,3 +1,3 @@
-<h4>Comment from <%= link_to diary_comment.user.display_name, :controller => 'user', :action => 'view', :display_name => diary_comment.user.display_name %>  at <%= diary_comment.created_at %></h4>
+<h4 id="comment<%= diary_comment.id %>">Comment from <%= link_to diary_comment.user.display_name, :controller => 'user', :action => 'view', :display_name => diary_comment.user.display_name %>  at <%= diary_comment.created_at %></h4>
 <%= htmlize(diary_comment.body) %>
 <hr />

app/views/notifier/diary_comment_notification.rhtml

@@ -0,0 +1,20 @@
+***************************************************************************
+Please do not reply to this email. Use the OpenStreetMap web site to reply.
+***************************************************************************
+
+Hi <%= @to_user %>,
+
+<%= @from_user %> has commented on your recent OpenStreetMap diary entry
+with the subject "<%= @subject %>":
+
+==
+<%= @body %>
+==
+
+You can also read the comment at <%= @readurl %>
+and you can comment at <%= @commenturl %>
+or reply at <%= @replyurl %>
+
+***************************************************************************
+Please do not reply to this email. Use the OpenStreetMap web site to reply.
+***************************************************************************