diff --git a/lib/redmine_dmsf/webdav/base_resource.rb b/lib/redmine_dmsf/webdav/base_resource.rb
index 5def382f..764d9879 100644
--- a/lib/redmine_dmsf/webdav/base_resource.rb
+++ b/lib/redmine_dmsf/webdav/base_resource.rb
@@ -34,7 +34,7 @@ module RedmineDmsf
         raise NotFound if Setting.plugin_redmine_dmsf['dmsf_webdav'].blank?
         @project = nil
         @public_path = "#{options[:root_uri_path]}#{path}"
-        super(path, request, response, options)
+        super path, request, response, options
       end
 
       DIR_FILE = "<tr><td class=\"name\"><a href=\"%s\">%s</a></td><td class=\"size\">%s</td><td class=\"type\">%s</td><td class=\"mtime\">%s</td></tr>"
@@ -81,16 +81,17 @@ module RedmineDmsf
         new_path = @path
         new_path = new_path + '/' unless new_path[-1,1] == '/'
         new_path = '/' + new_path unless new_path[0,1] == '/'
-        @__proxy.class.new("#{new_path}#{name}", request, response, @options.merge(user: @user))
+        @__proxy.class.new "#{new_path}#{name}", request, response, @options.merge(user: @user)
       end
       
       def child_project(p)
         project_display_name = ProjectResource.create_project_name(p)
         new_path = @path
+        #new_path = +'/'
         new_path = new_path + '/' unless new_path[-1,1] == '/'
         new_path = '/' + new_path unless new_path[0,1] == '/'
         new_path += project_display_name
-        @__proxy.class.new(new_path, request, response, @options.merge(user: @user))
+        @__proxy.class.new new_path, request, response, @options.merge(user: @user)
       end
 
       def parent
@@ -110,26 +111,35 @@ module RedmineDmsf
     protected
     
       def basename
-        File.basename(@path)
+        File.basename @path
       end
 
       # Return instance of Project based on the path
       def project
         unless @project
-          pinfo = @path.split('/').drop(1)
-          if pinfo.length > 0
-            if Setting.plugin_redmine_dmsf['dmsf_webdav_use_project_names']
-              if pinfo.first =~ /(\d+)$/
-                @project = Project.find_by(id: $1)
-                Rails.logger.error("No project found on path '#{@path}'") unless @project
-              end
-            else
-              begin
-                @project = Project.find(pinfo.first)
-              rescue => e
-                Rails.logger.error e.message
+          i = 1
+          while true
+            pinfo = @path.split('/').drop(i)
+            if pinfo.length > 0
+              if Setting.plugin_redmine_dmsf['dmsf_webdav_use_project_names']
+                if pinfo.first =~ /(\d+)$/
+                  prj = Project.visible.find_by(id: $1)
+                  Rails.logger.error("No project found on path '#{@path}'") unless prj
+                end
+              else
+                begin
+                  scope = Project.visible.where(identifier: pinfo.first)
+                  scope = scope.where(parent_id: @project.id) if @project
+                  prj = scope.first
+                rescue => e
+                  Rails.logger.error e.message
+                end
               end
             end
+            break unless prj
+            i = i + 1
+            @project = prj
+            prj = nil
           end
         end
         @project
@@ -137,6 +147,7 @@ module RedmineDmsf
 
       # Make it easy to find the path without project in it.
       def projectless_path
+        # TODO:
         '/' + @path.split('/').drop(2).join('/')
       end
 
diff --git a/lib/redmine_dmsf/webdav/dmsf_resource.rb b/lib/redmine_dmsf/webdav/dmsf_resource.rb
index 63f24460..4a308e4c 100644
--- a/lib/redmine_dmsf/webdav/dmsf_resource.rb
+++ b/lib/redmine_dmsf/webdav/dmsf_resource.rb
@@ -31,12 +31,13 @@ module RedmineDmsf
       def initialize(path, request, response, options)
         @folder = nil
         @file = nil
+        @subproject = nil
         super path, request, response, options
       end
 
       # Here we make sure our folder and file methods are not aliased - it should shave a few cycles off of processing
       def setup
-        @skip_alias |= [ :folder, :file ]
+        @skip_alias |= [ :folder, :file, :subproject ]
       end
 
       # Gather collection of objects that denote current entities child entities
@@ -46,13 +47,29 @@ module RedmineDmsf
       def children
         unless @children
           @children = []
-          if collection?
+          if folder
+            # Folders
             folder.dmsf_folders.visible.pluck(:title).each do |title|
               @children.push child(title)
             end
+            # Files
             folder.dmsf_files.visible.pluck(:name).each do |name|
               @children.push child(name)
             end
+          elsif subproject
+            # Projects
+            subproject.children.visible.select(:id, :identifier, :name).has_module(:dmsf).where(
+                Project.allowed_to_condition(User.current, :view_dmsf_folders)).find_each do |p|
+              @children << child_project(p)
+            end
+            # Folders
+            subproject.dmsf_folders.visible.pluck(:title).each do |title|
+              @children.push child(title)
+            end
+            # Files
+            subproject.dmsf_files.visible.pluck(:name).each do |name|
+              @children.push child(name)
+            end
           end
         end
         @children
@@ -61,17 +78,17 @@ module RedmineDmsf
       # Does the object exist?
       # If it is either a folder or a file, then it exists
       def exist?
-        project && project.module_enabled?('dmsf') && (folder || file) &&
+        project && project.module_enabled?('dmsf') && (folder || file || subproject) &&
           (User.current.admin? || User.current.allowed_to?(:view_dmsf_folders, project))
       end
 
       def really_exist?
-        project && project.module_enabled?('dmsf') && (folder || file)
+        project && project.module_enabled?('dmsf') && (folder || file || subproject)
       end
 
       # Is this entity a folder?
       def collection?
-        !folder.nil?
+        folder || subproject
       end
 
       # Check if current entity is a folder and return DmsfFolder object if found (nil if not)
@@ -86,12 +103,27 @@ module RedmineDmsf
       # Check if the current entity exists as a file (DmsfFile), and returns corresponding object if found (nil otherwise)
       def file
         unless @file
-          return nil unless project # Again if entity project is nil, it cannot exist in context of this object
-          @file = DmsfFile.find_file_by_name(project, parent.folder, basename)
+          @file = DmsfFile.find_file_by_name(project, parent.folder, basename) if project
         end
         @file
       end
 
+      def subproject
+        unless @subproject
+          @subproject = Project.visible.where(parent_id: parent_project.id, name: basename).first if parent_project
+        end
+        @subproject
+      end
+
+      def parent_project
+        unless @parent_project
+          if /\/(.+)\/#{project.identifier}\/?$/.match(@path)
+            @parent_project = Project.visible.where(identifier: $1).first
+          end
+        end
+        @parent_project
+      end
+
       # Return the content type of file
       # will return inode/directory for any collections, and appropriate for File entities
       def content_type
@@ -99,6 +131,8 @@ module RedmineDmsf
           'inode/directory'
         elsif file && file.last_revision
           file.last_revision.detect_content_type
+        elsif subproject
+          'inode/directory'
         else
           NotFound
         end
@@ -109,6 +143,8 @@ module RedmineDmsf
           folder.created_at
         elsif file
           file.created_at
+        elsif subproject
+          subproject.created_on
         else
           NotFound
         end
@@ -119,6 +155,8 @@ module RedmineDmsf
           folder.updated_at
         elsif file && file.last_revision
           file.last_revision.updated_at
+        elsif subproject
+          subproject.updated_on
         else
           NotFound
         end
@@ -135,7 +173,11 @@ module RedmineDmsf
       end
 
       def special_type
-        l(:field_folder) if folder
+        if folder
+          l(:field_folder)
+        elsif subproject
+          l(:field_project)
+        end
       end
 
       # Process incoming GET request
diff --git a/lib/redmine_dmsf/webdav/index_resource.rb b/lib/redmine_dmsf/webdav/index_resource.rb
index c85bcf6f..9b26eac1 100644
--- a/lib/redmine_dmsf/webdav/index_resource.rb
+++ b/lib/redmine_dmsf/webdav/index_resource.rb
@@ -32,9 +32,9 @@ module RedmineDmsf
       def children
         unless @projects
           @projects = []
-          Project.select(:id, :identifier, :name).has_module(:dmsf).where(
+          Project.visible.select(:id, :identifier, :name).has_module(:dmsf).where(
             Project.allowed_to_condition(
-              User.current, :view_dmsf_folders)).order('lft').find_each do |p|
+              User.current, :view_dmsf_folders)).find_each do |p|
             @projects << child_project(p)
           end
         end
diff --git a/lib/redmine_dmsf/webdav/project_resource.rb b/lib/redmine_dmsf/webdav/project_resource.rb
index 2a099119..cd3f0968 100644
--- a/lib/redmine_dmsf/webdav/project_resource.rb
+++ b/lib/redmine_dmsf/webdav/project_resource.rb
@@ -34,9 +34,20 @@ module RedmineDmsf
         unless @children          
           @children = []
           if project
+            # Sub-projects
+            # project.children.select(:id, :identifier, :name).has_module(:dmsf).where(
+            #     Project.allowed_to_condition(
+            #         User.current, :view_dmsf_folders)).order('lft').pluck(:name).each do |name|
+            #   @children.push child(name)
+            project.children.visible.select(:id, :identifier, :name).has_module(:dmsf).where(
+                Project.allowed_to_condition(User.current, :view_dmsf_folders)).find_each do |p|
+                  @children << child_project(p)
+            end
+            # Folders
             project.dmsf_folders.visible.pluck(:title).each do |title|
               @children.push child(title)
             end
+            # Files
             project.dmsf_files.visible.pluck(:name).each do |name|
               @children.push child(name)
             end