Adds a setting to allow subtasks to belong to other projects (#5487).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10587 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/issues_helper.rb

@@ -65,7 +65,7 @@ module IssuesHelper
     s = ''
     ancestors = issue.root? ? [] : issue.ancestors.visible.all
     ancestors.each do |ancestor|
-      s << '<div>' + content_tag('p', link_to_issue(ancestor))
+      s << '<div>' + content_tag('p', link_to_issue(ancestor, :project => (issue.project_id != ancestor.project_id)))
     end
     s << '<div>'
     subject = h(issue.subject)
@@ -82,7 +82,7 @@ module IssuesHelper
     issue_list(issue.descendants.visible.sort_by(&:lft)) do |child, level|
       s << content_tag('tr',
              content_tag('td', check_box_tag("ids[]", child.id, false, :id => nil), :class => 'checkbox') +
-             content_tag('td', link_to_issue(child, :truncate => 60), :class => 'subject') +
+             content_tag('td', link_to_issue(child, :truncate => 60, :project => (issue.project_id != child.project_id)), :class => 'subject') +
              content_tag('td', h(child.status)) +
              content_tag('td', link_to_user(child.assigned_to)) +
              content_tag('td', progress_bar(child.done_ratio, :width => '80px')),

app/helpers/settings_helper.rb

@@ -91,4 +91,16 @@ module SettingsHelper
                          l_or_humanize(notifiable.name, :prefix => 'label_').html_safe,
                        :class => notifiable.parent.present? ? "parent" : '').html_safe
   end
+
+  def cross_project_subtasks_options
+    options = [
+      [:label_disabled, ''],
+      [:label_cross_project_system, 'system'],
+      [:label_cross_project_tree, 'tree'],
+      [:label_cross_project_hierarchy, 'hierarchy'],
+      [:label_cross_project_descendants, 'descendants']
+    ]
+
+    options.map {|label, value| [l(label), value.to_s]}
+  end
 end

app/models/issue.rb

@@ -285,7 +285,8 @@ class Issue < ActiveRecord::Base
       if fixed_version && fixed_version.project != project && !project.shared_versions.include?(fixed_version)
         self.fixed_version = nil
       end
-      if parent && parent.project_id != project_id
+      # Clear the parent task if it's no longer valid
+      unless valid_parent_project?
         self.parent_issue_id = nil
       end
       @custom_field_values = nil
@@ -550,8 +551,8 @@ class Issue < ActiveRecord::Base
 
     # Checks parent issue assignment
     if @parent_issue
-      if @parent_issue.project_id != project_id
-        errors.add :parent_issue_id, :not_same_project
+      if !valid_parent_project?(@parent_issue)
+        errors.add :parent_issue_id, :invalid
       elsif !new_record?
         # moving an existing issue
         if @parent_issue.root_id != root_id
@@ -559,7 +560,7 @@ class Issue < ActiveRecord::Base
         elsif move_possible?(@parent_issue)
           # move accepted inside tree
         else
-          errors.add :parent_issue_id, :not_a_valid_parent
+          errors.add :parent_issue_id, :invalid
         end
       end
     end
@@ -963,6 +964,25 @@ class Issue < ActiveRecord::Base
     end
   end
 
+	# Returns true if issue's project is a valid
+	# parent issue project
+  def valid_parent_project?(issue=parent)
+    return true if issue.nil? || issue.project_id == project_id
+
+    case Setting.cross_project_subtasks
+    when 'system'
+      true
+    when 'tree'
+      issue.project.root == project.root
+    when 'hierarchy'
+      issue.project.is_or_is_ancestor_of?(project) || issue.project.is_descendant_of?(project)
+    when 'descendants'
+      issue.project.is_or_is_ancestor_of?(project)
+    else
+      false
+    end
+  end
+
   # Extracted from the ReportsController.
   def self.by_tracker(project)
     count_and_group_by(:project => project,
@@ -1042,8 +1062,9 @@ class Issue < ActiveRecord::Base
       relations_to.clear
     end
 
-    # Move subtasks
+    # Move subtasks that were in the same project
     children.each do |child|
+      next unless child.project_id == project_id_was
       # Change project and keep project
       child.send :project=, project, true
       unless child.save

app/views/issues/_attributes.html.erb

@@ -43,7 +43,7 @@
 <div class="splitcontentright">
 <% if @issue.safe_attribute? 'parent_issue_id' %>
 <p id="parent_issue"><%= f.text_field :parent_issue_id, :size => 10, :required => @issue.required_attribute?('parent_issue_id') %></p>
-<%= javascript_tag "observeAutocompleteField('issue_parent_issue_id', '#{escape_javascript auto_complete_issues_path(:project_id => @issue.project)}')" %>
+<%= javascript_tag "observeAutocompleteField('issue_parent_issue_id', '#{escape_javascript auto_complete_issues_path}')" %>
 <% end %>
 
 <% if @issue.safe_attribute? 'start_date' %>

app/views/settings/_issues.html.erb

@@ -3,6 +3,8 @@
 <div class="box tabular settings">
 <p><%= setting_check_box :cross_project_issue_relations %></p>
 
+<p><%= setting_select :cross_project_subtasks, cross_project_subtasks_options %></p>
+
 <p><%= setting_check_box :issue_group_assignment %></p>
 
 <p><%= setting_check_box :default_issue_start_date_to_creation_date %></p>