Keep track of issue description changes (#746).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4954 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/journals_controller.rb

@@ -1,5 +1,5 @@
-# redMine - project management software
-# Copyright (C) 2006-2008  Jean-Philippe Lang
+# Redmine - project management software
+# Copyright (C) 2006-2011  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -16,12 +16,13 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 class JournalsController < ApplicationController
-  before_filter :find_journal, :only => [:edit]
+  before_filter :find_journal, :only => [:edit, :diff]
   before_filter :find_issue, :only => [:new]
   before_filter :find_optional_project, :only => [:index]
-  before_filter :authorize, :only => [:new, :edit]
+  before_filter :authorize, :only => [:new, :edit, :diff]
   accept_key_auth :index
-
+  menu_item :issues
+  
   helper :issues
   helper :queries
   include QueriesHelper
@@ -43,6 +44,17 @@ class JournalsController < ApplicationController
     render_404
   end
   
+  def diff
+    @issue = @journal.issue
+    if params[:detail_id].present?
+      @detail = @journal.details.find_by_id(params[:detail_id])
+    else
+      @detail = @journal.details.detect {|d| d.prop_key == 'description'}
+    end
+    (render_404; return false) unless @issue && @detail
+    @diff = Redmine::Helpers::Diff.new(@detail.value, @detail.old_value)
+  end
+  
   def new
     journal = Journal.find(params[:journal_id]) if params[:journal_id]
     if journal
@@ -67,6 +79,7 @@ class JournalsController < ApplicationController
   end
   
   def edit
+    (render_403; return false) unless @journal.editable_by?(User.current)
     if request.post?
       @journal.update_attributes(:notes => params[:notes]) if params[:notes]
       @journal.destroy if @journal.details.empty? && @journal.notes.blank?
@@ -86,10 +99,10 @@ class JournalsController < ApplicationController
     end
   end
   
-private
+  private
+  
   def find_journal
     @journal = Journal.find(params[:id])
-    (render_403; return false) unless @journal.editable_by?(User.current)
     @project = @journal.journalized.project
   rescue ActiveRecord::RecordNotFound
     render_404

app/helpers/issues_helper.rb

@@ -1,5 +1,5 @@
-# redMine - project management software
-# Copyright (C) 2006  Jean-Philippe Lang
+# Redmine - project management software
+# Copyright (C) 2006-2011  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -183,7 +183,16 @@ module IssuesHelper
       end
     end
     
-    if !detail.value.blank?
+    if detail.property == 'attr' && detail.prop_key == 'description'
+      s = l(:text_journal_changed_no_detail, :label => label)
+      unless no_html
+        diff_link = link_to 'diff', 
+          {:controller => 'journals', :action => 'diff', :id => detail.journal_id, :detail_id => detail.id},
+          :title => l(:label_view_diff)
+        s << " (#{ diff_link })"
+      end
+      s
+    elsif !detail.value.blank?
       case detail.property
       when 'attr', 'cf'
         if !detail.old_value.blank?

app/models/issue.rb

@@ -1,5 +1,5 @@
-# redMine - project management software
-# Copyright (C) 2006-2007  Jean-Philippe Lang
+# Redmine - project management software
+# Copyright (C) 2006-2011  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -829,7 +829,7 @@ class Issue < ActiveRecord::Base
   def create_journal
     if @current_journal
       # attributes changes
-      (Issue.column_names - %w(id description root_id lft rgt lock_version created_on updated_on)).each {|c|
+      (Issue.column_names - %w(id root_id lft rgt lock_version created_on updated_on)).each {|c|
         @current_journal.details << JournalDetail.new(:property => 'attr',
                                                       :prop_key => c,
                                                       :old_value => @issue_before_change.send(c),

app/models/journal_detail.rb

@@ -1,5 +1,5 @@
-# redMine - project management software
-# Copyright (C) 2006  Jean-Philippe Lang
+# Redmine - project management software
+# Copyright (C) 2006-2011  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
@@ -17,9 +17,4 @@
 
 class JournalDetail < ActiveRecord::Base
   belongs_to :journal
-  
-  def before_save
-    self.value = value[0..254] if value && value.is_a?(String)
-    self.old_value = old_value[0..254] if old_value && old_value.is_a?(String)
-  end
 end

app/views/journals/diff.html.erb

@@ -0,0 +1,10 @@
+<h2><%=h @issue.tracker %> #<%= @issue.id %></h2>
+<p><%= authoring @journal.created_on, @journal.user, :label => :label_updated_time_by %></p>
+
+<div class="text-diff">
+<%= simple_format_without_paragraph @diff.to_html %>
+</div>
+
+<p><%= link_to l(:button_back), issue_path(@issue), :onclick => 'history.back(); return false;' %></p>
+
+<% html_title "#{@issue.tracker.name} ##{@issue.id}: #{@issue.subject}" %>