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# encoding: utf-8
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module FilesHelper
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def downloadAll containers
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paths = []
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files = []
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tmpfile = "tmp.zip"
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containers.each do |container|
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next if container.attachments.empty?
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if container.is_a?(Version);end
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container.attachments.each do |attachment|
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paths << attachment.diskfile
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file = attachment.diskfile
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# logger.error "[FilesHelper] downloadAll: #{e}"
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begin
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File.new(file, "r")
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rescue Exception => e
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logger.error e
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next
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end
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files << file
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# zip.add(file.path.dup.sub(directory, ''), file.path)
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end
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end
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zipfile_name = "archive.zip"
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if File.exists? File.open(zipfile_name, "w+")
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ff = File.open(zipfile_name, "w+")
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ff.close
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File.delete ff
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end
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Zip::ZipFile.open(zipfile_name, Zip::ZipFile::CREATE) do |zipfile|
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files.each do |filename|
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directory = File.dirname filename
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# Two arguments:
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# - The name of the file as it will appear in the archive
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# - The original file, including the path to find it
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dir = filename.sub(directory+"/", '')
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zipfile.add(dir, filename)
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end
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end
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File.new(zipfile_name,'w+')
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end
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def courses_check_box_tags(name,courses,current_course,attachment)
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s = ''
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courses.each do |course|
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if !(attachment.container_type && attachment.container_id == course.id) && is_course_teacher(User.current,course) && course_in_current_or_next_term(course)
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s << "<label>#{ check_box_tag name, course.id, false, :id => nil } #{h course.name}</label> [#{get_course_term course}]<br/>"
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end
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end
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s.html_safe
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end
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#判断用户是否拥有除current_course以外的课程，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
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def has_course? user,current_course
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result = false
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user.courses.each do |course|
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if current_course.id != course.id && is_course_teacher(User.current,course) && course_in_current_or_next_term(course)
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return true
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end
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end
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result
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end
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# 判断指定的资源时候符合类型
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def isTypeOk(attachment, type, contentType)
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result = false
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if type != 0
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if attachment.attachtype == type
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result = true
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end
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else
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result = true
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end
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if result
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if contentType != '0' && contentType != attachment.suffix_type
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result = false
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end
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end
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result
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end
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def visable_attachemnts attachments
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result = []
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attachments.each do |attachment|
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if attachment.is_public? || (attachment.container_type == "Course" && User.current.member_of_course?(Course.find(attachment.container_id)))|| attachment.author_id == User.current.id
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result << attachment
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end
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end
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result
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end
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def visable_attachemnts_incourse attachments
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result = []
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attachments.each do |attachment|
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if attachment.is_public? || (attachment.author.member_of_course?(Course.find(attachment.container_id)))|| attachment.author_id == User.current.id
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result << attachment
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end
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end
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result
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end
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def visable_attachemnts_insite attachments,course
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result = []
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attachments.each do |attachment|
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if attachment.is_public? || (attachment.container_type == "Course" && attachment.container_id == course.id && User.current.member_of_course?(Course.find(attachment.container_id)))|| attachment.author_id == User.current.id
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result << attachment
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end
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end
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result
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end
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end |
