socialforge/app/helpers/files_helper.rb

# encoding: utf-8
module FilesHelper
  include AttachmentsHelper

  def downloadAll containers
    paths = []
    files = []
    tmpfile = "tmp.zip"

    containers.each do |container|
      next if container.attachments.empty?
      if container.is_a?(Version);end
      container.attachments.each do |attachment|
        paths << attachment.diskfile
        file = attachment.diskfile
        # logger.error "[FilesHelper] downloadAll: #{e}"
        begin
          File.new(file, "r")
        rescue Exception => e
          logger.error e
          next
        end
        files << file
      # zip.add(file.path.dup.sub(directory, ''), file.path)
      end
    end

    zipfile_name = "archive.zip"
    if File.exists? File.open(zipfile_name, "w+")
      ff = File.open(zipfile_name, "w+")
      ff.close
      File.delete ff
    end 
    Zip::ZipFile.open(zipfile_name, Zip::ZipFile::CREATE) do |zipfile|
      files.each do |filename|
        directory = File.dirname filename
        # Two arguments:
        # - The name of the file as it will appear in the archive
        # - The original file, including the path to find it
        dir = filename.sub(directory+"/", '')
        zipfile.add(dir, filename)
        
      end
    end
    File.new(zipfile_name,'w+')
  end

  #带勾选框的课程列表
  def courses_check_box_tags(name,courses,current_course,attachment)
    s = ''
    courses.each do |course|
      if !course_contains_attachment?(course,attachment)  && is_course_teacher(User.current,course) && course_in_current_or_next_term(course)
        s << "<label>#{ check_box_tag name, course.id, false, :id => nil } #{h course.name}</label>&nbsp;[#{get_course_term course}]<br/>"
      end
    end
    s.html_safe
  end

  #带勾选框的项目列表
  def projects_check_box_tags(name,projects,current_project,attachment)
    s = ''
    projects.each do |project|
      if !project_contains_attachment?(project,attachment)  && User.current.allowed_to?(:manage_files, project)
        s << "<label>#{ check_box_tag name, project.id, false, :id => nil } #{h project.name}</label><br/>"
      end
    end
    s.html_safe
  end

  #带勾选框的组织资源栏目列表
  def org_subfields_check_box_tags(name,org_subfields,attachment)
    s = ''
    org_subfields.each do |org_subfield|
      if !org_subfield.attachments.include?attachment
        s << "<label>#{ check_box_tag name, org_subfield.id, false, :id => nil } #{h org_subfield.name}</label><br/>"
      end
    end
    s.html_safe
  end

  #判断用户是否拥有不包含当前资源的课程，需用户在该课程中角色为教师且该课程属于当前学期或下一学期
  def has_course? user,file
    result = false
    user.courses.each do |course|
      if !course_contains_attachment?(course,file) && is_course_teacher(User.current,course) && course_in_current_or_next_term(course)
        return true
      end
    end
    result
  end

  #判断用户是否拥有不包含当前资源的项目，需用户在该项目中有资源管理相关资源
  def has_project? user,file
    result = false
    user.projects.each do |project|
      if !project_contains_attachment?(project,file) && User.current.allowed_to?(:manage_files, project)
        return true
      end
    end
    result
  end

  # 判断指定的资源时候符合类型
  def isTypeOk(attachment, type, contentType)
    result = false
    if type != 0
      if attachment.attachtype == type
        result = true
      end
    else
      result = true
    end
    if  result
      if contentType != '0' && contentType != attachment.suffix_type
        result = false
      end
    end
    result
  end

  def visable_attachemnts attachments
    result = []
    attachments.each do |attachment|
      if attachment.is_public? ||
          (attachment.container_type == "Project" && User.current.member_of?(attachment.project)) ||
          (attachment.container_type == "Course" && User.current.member_of_course?(Course.find(attachment.container_id)))||
          attachment.author_id == User.current.id ||
          attachment.container_type == "OrgSubfield"
        result << attachment
      end
    end
    result
  end

  def get_attachments_by_tag attachments,tag
    attachments.each do |attachment|
      attachment.tag_list.include?(tag)
    end
  end

  def visable_attachemnts_insite attachments,obj
    result = []
    if obj.is_a?(Course)
      attachments.each do |attachment|
        if attachment.is_public? || (attachment.container_type == "Course" && attachment.container_id == obj.id  && User.current.member_of_course?(Course.find(attachment.container_id)))|| attachment.author_id == User.current.id
          result << attachment
        end
      end
    else if obj.is_a?(Project)
     attachments.each do |attachment|
       if attachment.is_public? || (attachment.container_type == "Project" && attachment.container_id == obj.id  && User.current.member_of_course?(Project.find(attachment.container_id)))|| attachment.author_id == User.current.id
         result << attachment
       end
     end
     elsif obj.is_a?(OrgSubfield)
       attachments.each do |attachment|
         if attachment.is_public? || (attachment.container_type == "OrgSubfield" && attachment.container_id == obj.id )|| attachment.author_id == User.current.id
           result << attachment
         end
     end
    end
  end
  result
  end



end