Version sharing (#465) + optional inclusion of subprojects in the roadmap view (#2666).

Each version of a project can be shared with:
* subprojects
* projects in the project hierarchy: ancestors + descendants (needs versions management permission on the root project)
* projects in the project tree: root project + all its descendants (same as above)
* all projects (can be set by admin users only)

Notes:
* when sharing a version of a private project with others projects, its name will be visible within the other projects
* a project with versions used by non descendant projects can not be archived

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3123 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -100,7 +100,10 @@ class Issue < ActiveRecord::Base
         # reassign to the category with same name if any
         new_category = issue.category.nil? ? nil : new_project.issue_categories.find_by_name(issue.category.name)
         issue.category = new_category
-        issue.fixed_version = nil
+        # Keep the fixed_version if it's still valid in the new_project
+        unless new_project.shared_versions.include?(issue.fixed_version)
+          issue.fixed_version = nil
+        end
         issue.project = new_project
       end
       if new_tracker
@@ -242,7 +245,7 @@ class Issue < ActiveRecord::Base
   
   # Versions that the issue can be assigned to
   def assignable_versions
-    @assignable_versions ||= (project.versions.open + [Version.find_by_id(fixed_version_id_was)]).compact.uniq.sort
+    @assignable_versions ||= (project.shared_versions.open + [Version.find_by_id(fixed_version_id_was)]).compact.uniq.sort
   end
   
   # Returns true if this issue is blocked by another issue that is still open
@@ -336,6 +339,23 @@ class Issue < ActiveRecord::Base
     s << ' assigned-to-me' if User.current.logged? && assigned_to_id == User.current.id
     s
   end
+
+  # Update all issues so their versions are not pointing to a
+  # fixed_version that is outside of the issue's project hierarchy.
+  #
+  # OPTIMIZE: does a full table scan of Issues with a fixed_version.
+  def self.update_fixed_versions_from_project_hierarchy_change
+    Issue.all(:conditions => ['fixed_version_id IS NOT NULL'],
+              :include => [:project, :fixed_version]
+              ).each do |issue|
+      next if issue.project.nil? || issue.fixed_version.nil?
+      unless issue.project.shared_versions.include?(issue.fixed_version)
+        issue.init_journal(User.current)
+        issue.fixed_version = nil
+        issue.save
+      end
+    end
+  end
   
   private
   

app/models/project.rb

@@ -219,13 +219,20 @@ class Project < ActiveRecord::Base
     self.status == STATUS_ACTIVE
   end
   
-  # Archives the project and its descendants recursively
+  # Archives the project and its descendants
   def archive
-    # Archive subprojects if any
-    children.each do |subproject|
-      subproject.archive
+    # Check that there is no issue of a non descendant project that is assigned
+    # to one of the project or descendant versions
+    v_ids = self_and_descendants.collect {|p| p.version_ids}.flatten
+    if v_ids.any? && Issue.find(:first, :include => :project,
+                                        :conditions => ["(#{Project.table_name}.lft < ? OR #{Project.table_name}.rgt > ?)" +
+                                                        " AND #{Issue.table_name}.fixed_version_id IN (?)", lft, rgt, v_ids])
+      return false
     end
-    update_attribute :status, STATUS_ARCHIVED
+    Project.transaction do
+      archive!
+    end
+    true
   end
   
   # Unarchives the project
@@ -297,6 +304,7 @@ class Project < ActiveRecord::Base
         # move_to_child_of adds the project in last (ie.right) position
         move_to_child_of(p)
       end
+      Issue.update_fixed_versions_from_project_hierarchy_change
       true
     else
       # Can not move to the given target
@@ -324,6 +332,19 @@ class Project < ActiveRecord::Base
     end
   end
   
+  # Returns a scope of the Versions used by the project
+  def shared_versions
+    @shared_versions ||= 
+      Version.scoped(:include => :project,
+                     :conditions => "#{Project.table_name}.id = #{id}" +
+                                    " OR (#{Project.table_name}.status = #{Project::STATUS_ACTIVE} AND (" +
+                                          " #{Version.table_name}.sharing = 'system'" +
+                                          " OR (#{Project.table_name}.lft >= #{root.lft} AND #{Project.table_name}.rgt <= #{root.rgt} AND #{Version.table_name}.sharing = 'tree')" +
+                                          " OR (#{Project.table_name}.lft < #{lft} AND #{Project.table_name}.rgt > #{rgt} AND #{Version.table_name}.sharing = 'hierarchy')" +
+                                          " OR (#{Project.table_name}.lft > #{lft} AND #{Project.table_name}.rgt < #{rgt} AND #{Version.table_name}.sharing IN ('hierarchy', 'descendants'))" +
+                                          "))")
+  end
+
   # Returns a hash of project users grouped by role
   def users_by_role
     members.find(:all, :include => [:user, :roles]).inject({}) do |h, m|
@@ -605,4 +626,12 @@ class Project < ActiveRecord::Base
         self.time_entry_activities.active
     end
   end
+  
+  # Archives subprojects recursively
+  def archive!
+    children.each do |subproject|
+      subproject.send :archive!
+    end
+    update_attribute :status, STATUS_ARCHIVED
+  end
 end

app/models/query.rb

@@ -200,8 +200,8 @@ class Query < ActiveRecord::Base
       unless @project.issue_categories.empty?
         @available_filters["category_id"] = { :type => :list_optional, :order => 6, :values => @project.issue_categories.collect{|s| [s.name, s.id.to_s] } }
       end
-      unless @project.versions.empty?
-        @available_filters["fixed_version_id"] = { :type => :list_optional, :order => 7, :values => @project.versions.sort.collect{|s| [s.name, s.id.to_s] } }
+      unless @project.shared_versions.empty?
+        @available_filters["fixed_version_id"] = { :type => :list_optional, :order => 7, :values => @project.shared_versions.sort.collect{|s| ["#{s.project.name} - #{s.name}", s.id.to_s] } }
       end
       unless @project.descendants.active.empty?
         @available_filters["subproject_id"] = { :type => :list_subprojects, :order => 13, :values => @project.descendants.visible.collect{|s| [s.name, s.id.to_s] } }

app/models/version.rb

@@ -17,6 +17,7 @@
 
 class Version < ActiveRecord::Base
   before_destroy :check_integrity
+  after_update :update_issue_versions
   belongs_to :project
   has_many :fixed_issues, :class_name => 'Issue', :foreign_key => 'fixed_version_id'
   acts_as_customizable
@@ -24,15 +25,24 @@ class Version < ActiveRecord::Base
                      :delete_permission => :manage_files
 
   VERSION_STATUSES = %w(open locked closed)
+  VERSION_SHARINGS = %w(none descendants hierarchy tree system)
   
   validates_presence_of :name
   validates_uniqueness_of :name, :scope => [:project_id]
   validates_length_of :name, :maximum => 60
   validates_format_of :effective_date, :with => /^\d{4}-\d{2}-\d{2}$/, :message => :not_a_date, :allow_nil => true
   validates_inclusion_of :status, :in => VERSION_STATUSES
+  validates_inclusion_of :sharing, :in => VERSION_SHARINGS
 
   named_scope :open, :conditions => {:status => 'open'}
-    
+  named_scope :visible, lambda {|*args| { :include => :project,
+                                          :conditions => Project.allowed_to_condition(args.first || User.current, :view_issues) } }
+
+  # Returns true if +user+ or current user is allowed to view the version
+  def visible?(user=User.current)
+    user.allowed_to?(:view_issues, self.project)
+  end
+  
   def start_date
     effective_date
   end
@@ -54,6 +64,10 @@ class Version < ActiveRecord::Base
   def closed?
     status == 'closed'
   end
+
+  def open?
+    status == 'open'
+  end
   
   # Returns true if the version is completed: due date reached and no open issues
   def completed?
@@ -120,10 +134,38 @@ class Version < ActiveRecord::Base
     end
   end
   
+  # Returns the sharings that +user+ can set the version to
+  def allowed_sharings(user = User.current)
+    VERSION_SHARINGS.select do |s|
+      if sharing == s
+        true
+      else
+        case s
+        when 'system'
+          # Only admin users can set a systemwide sharing
+          user.admin?
+        when 'hierarchy', 'tree'
+          # Only users allowed to manage versions of the root project can
+          # set sharing to hierarchy or tree
+          project.nil? || user.allowed_to?(:manage_versions, project.root)
+        else
+          true
+        end
+      end
+    end
+  end
+  
 private
   def check_integrity
     raise "Can't delete version" if self.fixed_issues.find(:first)
   end
+
+  # Update the issue's fixed versions. Used if a version's sharing changes.
+  def update_issue_versions
+    if sharing_changed?
+      Issue.update_fixed_versions_from_project_hierarchy_change
+    end
+  end
   
   # Returns the average estimated time of assigned issues
   # or 1 if no issue has an estimated time