Redmine

Could you try with Rails 2.3.5 ?

Any update on this issue? I am having the same problem after upgrading to 1.2 (stable):

ActionView::TemplateError (comparison of Issue with Issue failed) on line #54 of app/views/gantts/show.html.erb:
51: # Width of the entire chart
52: g_width = (@gantt.date_to - @gantt.date_from + 1)*zoom
53:
54: @gantt.render(:top => headers_height + 8, :zoom => zoom, :g_width => g_width, :subject_width => subject_width)
55:
56: g_height = [(20 * (@gantt.number_of_rows + 6))+150, 206].max
57: t_height = g_height + headers_height

Etienne Massip wrote:

Could you try with Rails 2.3.5 ?

Please give additional info according to SubmittingBugs.

I have the same Problem but only with one of thirty active projects.

• Redmine 1.2.1 (2011-07-11)
• Database: MySQL 5.1.56 for pc-linux-gnu on i686 (MySQL Community Server (GPL))
• Ruby: ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-linux]
• Rails: 2.3.11

When i open the Gantt Chart i get the following Error:
------------------------------------------------------------------
Processing GanttsController#show (for 81.223.151.146 at 2011-08-12 11:13:22) [GET]
Parameters: {"project_id"=>"newproductsuntory", "action"=>"show", "controller"=>"gantts"}
Rendering template within layouts/base
Rendering gantts/show

ActionView::TemplateError (comparison of Issue with Issue failed) on line #54 of app/views/gantts/show.html.erb:
51: # Width of the entire chart
52: g_width = (@gantt.date_to - @gantt.date_from + 1)*zoom
53:
54: @gantt.render(:top => headers_height + 8, :zoom => zoom, :g_width => g_width, :subject_width => subject_width)
55:
56: g_height = [(20 * (@gantt.number_of_rows + 6))+150, 206].max
57: t_height = g_height + headers_height

lib/redmine/helpers/gantt.rb:673:in `sort!'
    lib/redmine/helpers/gantt.rb:673:in `sort_issues!'
    lib/redmine/helpers/gantt.rb:204:in `render_project'
    lib/redmine/helpers/gantt.rb:184:in `render'
    app/models/project.rb:664:in `project_tree'
    app/models/project.rb:660:in `each'
    app/models/project.rb:660:in `project_tree'
    lib/redmine/helpers/gantt.rb:182:in `render'
    app/views/gantts/show.html.erb:54
    app/controllers/gantts_controller.rb:43:in `show'
    app/controllers/gantts_controller.rb:42:in `show'
    config/initializers/mongrel_cluster_with_rails_211_fix.rb:62:in `dispatch_cgi'

Rendering /opt/redmine/apps/redmine/public/500.html (500 Internal Server Error)
------------------------------------------------------------------

Wen i open the Issue Chart i get the following Error:
------------------------------------------------------------------
Processing IssuesController#index (for 81.223.151.146 at 2011-08-12 11:13:16) [GET]
Parameters: {"project_id"=>"newproductsuntory", "set_filter"=>"1", "action"=>"index", "tracker_id"=>"1", "controller"=>"issues"}
Rendering template within layouts/base
Rendering issues/index.rhtml

ActionView::TemplateError (undefined method `-' for nil:NilClass) on line #28 of app/views/issues/_list.rhtml:
25: </tr>
26: <% previous_group = group >
27: < end >
28: <tr id="issue-<= issue.id >" class="hascontextmenu <= cycle('odd', 'even') > <= issue.css_classes > <= level > 0 ? "idnt idnt-#{level}" : nil >">
29: <td class="checkbox hide-when-print"><= check_box_tag("ids[]", issue.id, false, :id => nil) ></td>
30: <td class="id"><= link_to issue.id, :controller => 'issues', :action => 'show', :id => issue ></td>
31: < query.columns.each do |column| ><= content_tag 'td', column_content(column, issue), :class => column.css_classes >< end %>

app/models/issue.rb:578:in `css_classes'
    app/views/issues/_list.rhtml:28:in `_run_rhtml_app47views47issues47_list46rhtml_locals_issues_list_object_query'
    app/helpers/issues_helper.rb:27:in `issue_list'
    app/helpers/issues_helper.rb:23:in `each'
    app/helpers/issues_helper.rb:23:in `issue_list'
    app/views/issues/_list.rhtml:16:in `_run_rhtml_app47views47issues47_list46rhtml_locals_issues_list_object_query'
    app/views/issues/_list.rhtml:1:in `_run_rhtml_app47views47issues47_list46rhtml_locals_issues_list_object_query'
    app/views/issues/index.rhtml:51:in `_run_rhtml_app47views47issues47index46rhtml'
    app/controllers/issues_controller.rb:92:in `index'
    app/controllers/issues_controller.rb:91:in `index'
    config/initializers/mongrel_cluster_with_rails_211_fix.rb:62:in `dispatch_cgi'

Rendering /opt/redmine/apps/redmine/public/500.html (500 Internal Server Error)
------------------------------------------------------------------

The interesting point is, that this error appears only on one project. But i can't access any issue in this project over the menue and i don't have a number to try direct access.

Would be great if anybody have a idea how to solve this problem.

I would like to ask if there has been any update on this issue.
I experience the same problem.
I have 2 projects. On one of them I can't open the gant chart anymore.

ActionView::Template::Error (comparison of Issue with Issue failed):
89:
90: # Width of the entire chart
91: g_width = ((@gantt.date_to - @gantt.date_from + 1) * zoom).to_i
92: @gantt.render(:top => headers_height + 8,
93: :zoom => zoom,
94: :g_width => g_width,
95: :subject_width => subject_width)
lib/redmine/helpers/gantt.rb:680:in `sort_issues!'
lib/redmine/helpers/gantt.rb:217:in `render_project'
lib/redmine/helpers/gantt.rb:201:in `render'
app/models/project.rb:733:in `project_tree'
app/models/project.rb:729:in `project_tree'
lib/redmine/helpers/gantt.rb:199:in `render'
app/views/gantts/show.html.erb:92:in `_app_views_gantts_show_html_erb___1765542175_10372'
app/controllers/gantts_controller.rb:43:in `show'
app/controllers/gantts_controller.rb:42:in `show'

my setup is:
redmine-2.3.1
jruby-1.7.4
rubygems-2.0.3
centos 6.4-64bit
Oracle JDK 1.7.0_25 64bit