Added a link to add a new category when creating or editing an issue.

The user is prompted for the category name. The new category is created and the drop-down list updated using an ajax call.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@648 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/projects_controller.rb

@@ -169,8 +169,18 @@ class ProjectsController < ApplicationController
   def add_issue_category
     @category = @project.issue_categories.build(params[:category])
     if request.post? and @category.save
-      flash[:notice] = l(:notice_successful_create)
-      redirect_to :action => 'settings', :tab => 'categories', :id => @project
+  	  respond_to do |format|
+        format.html do
+          flash[:notice] = l(:notice_successful_create)
+          redirect_to :action => 'settings', :tab => 'categories', :id => @project
+        end
+        format.js do
+          # IE doesn't support the replace_html rjs method for select box options
+          render(:update) {|page| page.replace "issue_category_id",
+            content_tag('select', '<option></option>' + options_from_collection_for_select(@project.issue_categories, 'id', 'name', @category.id), :id => 'issue_category_id', :name => 'issue[category_id]')
+          }
+        end
+      end
     end
   end