socialforge/app/helpers/courses_helper.rb

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# encoding: utf-8
## This helper be included in applicationHelper
module CoursesHelper
=begin
1. define TeacherRoles, StudentRoles
2. define count function
3. define search by roles
4. define search member function
=end
#TeacherRoles = [3, 4, 7, 9]
#StudentRoles = [5, 10]
#AllPeople = StudentRoles+TeacherRoles
## return people count
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# 推荐的精品课程
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def excellent_course_recommend new_course
q = "%#{new_course.name.strip}%"
result = find_excelletn_course(q, new_course)
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end
# 查询符合条件的精品课程
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# 用新课程名去匹配精品课程中按课程名和Tag名
def find_excelletn_course keywords, current_course
# 获取tag匹配结果ID
a_tags = []
# kc = keywords.to_a
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Course.visible.where("is_excellent =? and is_public =?", 1, 1).each do |ec|
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if ec.tags.any?{|value| current_course.name.include?(value.to_s)}
a_tags << ec.id
end
end
# sql = "SELECT distinct c.* FROM `courses` c, tags t, taggings ts where t.id = ts.tag_id and ts.taggable_id = c.id and c.is_excellent = 1 and is_delete = 0 and
# ts.taggable_type = 'Course' and t.name like '%#{keywords}%'"
# a_tags = Course.find_by_sql(sql).select{|course| course.is_public ==1 unless User.current.member_of_course?(course)}
# 通过elastic结果获取精品课程
a_courses = []
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#courses = Course.search(keywords)
#courses.each do |c|
# a_courses << c.id
#end
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a_courses << a_tags unless a_tags.length == 0
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# 课程本身不能搜索显示自己
excellent_ids = a_courses.flatten.uniq.delete_if{|i| i == current_course.id}
limit = 5 - excellent_ids.length.to_i
sql = "SELECT distinct c.id FROM course_activities cs, courses c where cs.course_id = c.id
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and c.is_excellent =1 and c.is_public = 1 and c.id != #{current_course.id} order by cs.updated_at desc;"
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default_ecourse_ids = Course.find_by_sql(sql).flatten
# REDO:时间紧,待优化
default_ids =[]
default_ecourse_ids.each do |de|
default_ids << de.id
end
default_ids = default_ids - excellent_ids
#default_ecourse = Course.where("id is not in (?)", ids).find_by_sql(sql).flatten.delete_if{|i| i == current_course.id}.flatten
arr_result = excellent_ids << default_ids
arr_result = arr_result.flatten.first(5)
return arr_result
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# 过滤条件:精品课程、本身不在搜索范围
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#e_courses = Course.where("is_excellent =? and id in (?)",1, arr_result).where("id !=?", current_course.id)
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end
# 判断精品课程是否可见,非课程成员无法查看私有课程
def visible_excellent_course obj
# if course.is_pu
end
# 返回x项目成员数量即roles表中定义的所有成员
def projectCount project
#searchCountByRoles project, AllPeople
project.members.count
end
# 统计课程中作品的数量
def student_works_num course
StudentWork.find_by_sql("SELECT * FROM student_works WHERE homework_common_id IN (SELECT id FROM homework_commons WHERE course_id = '#{course.id}')").count
end
# 返回教师数量即roles表中定义的Manager
def teacherCount project
project ? project.members.count - studentCount(project).to_i : 0
# or
# searchTeacherAndAssistant(project).count
end
def show_nav?(count)
count == 0 ? true : false
end
#课程模块需要展示的模块
def course_model
@nav_dispaly_course_all_label = 1
@nav_dispaly_forum_label = 1
@nav_dispaly_course_label = nil
@nav_dispaly_store_all_label = 1
end
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#生成课程老师成员链接
def course_teacher_link teacher_num
if User.current.member_of_course?(@course) || User.current.admin?
link_to "#{teacher_num}", course_member_path(@course, :role => 1), :class => 'info_foot_num c_blue', :id => 'teacher_number'
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else
content_tag 'span',teacher_num, :class => 'info_foot_num c_blue'
end
end
#生成课程学生列表连接
def course_student_link student_num
if (User.current.logged? && @course.open_student == 1) || (User.current.member_of_course?(@course)) || User.current.admin?
link_to "#{student_num}", course_member_path(@course, :role => 2), :class => 'info_foot_num c_blue', :id => "student_number"
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else
content_tag 'span',student_num, :class => 'info_foot_num c_blue'
end
end
def course_poll_count
Poll.where("polls_type = 'Course' and polls_group_id = #{@course.id} and polls_status in (2,3)").count
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end
def course_feedback_count
@course.journals_for_messages.where('m_parent_id IS NULL').count
end
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#当前学期(2015春季学期)
def current_time_and_term course
str = ""
term = cur_course_term
if (course.time == course.end_time && course.term == course.end_term) || (course.end_term.nil? && course.end_time.nil?) || course.time > Time.now.year
str = course.time.to_s + course.term.to_s
elsif course.time == Time.now.year && set_term_value(cur_course_term) <= set_term_value(course.term)
str = course.time.to_s + course.term.to_s
elsif course.end_time < Time.now.year || (course.end_time == Time.now.year && set_term_value(cur_course_term) >= set_term_value(course.term))
str = course.end_time.to_s + course.end_term.to_s
else
str = Time.now.year.to_s + cur_course_term.to_s
end
str
end
def set_term_value term
val = 0
if term == "春季学期"
val = 1
elsif term == "夏季学期"
val = 2
elsif term == "秋季学期"
val = 3
end
val
end
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#当前学期(2015春)
def current_time_and_term_short course
str = ""
term = cur_course_term
if (course.time == course.end_time && course.term == course.end_term) || (course.end_term.nil? && course.end_time.nil?) || course.time > Time.now.year
str = course.time.to_s + course.term[0]
elsif course.time == Time.now.year && set_term_value(cur_course_term) <= set_term_value(course.term)
str = course.time.to_s + course.term[0]
elsif course.end_time < Time.now.year || (course.end_time == Time.now.year && set_term_value(cur_course_term) >= set_term_value(course.term))
str = course.end_time.to_s + course.end_term[0]
else
str = Time.now.year.to_s + cur_course_term[0]
end
str
end
# 返回学生数量即roles表中定义的Reporter
#def studentCount project
# searchStudent(project).count
# or
# searchStudent(project).count
# end
# 判断用户是否是课程的管理员
# add by nwb
def is_course_manager?(user_id,course_id)
@result = false
@user_id = CourseInfo.find_by_course_id(course_id)
if @user_id == user.id
@result = true
end
return @result
end
# 返回课程设置界面
def course_settings_tabs
tabs = [{:name => 'info', :action => :edit_course, :partial => 'courses/edit', :label => :label_information_plural},
{:name => 'members', :action => :manage_members, :partial => 'courses/settings/members', :label => :label_member_plural}
]
tabs.select { |tab| User.current.allowed_to?(tab[:action], @course) }
end
#是否启动互评下拉框
def is_evaluation_option
type = []
option1 = []
option2 = []
option1 << l(:lable_start_mutual_evaluation)
option1 << 1
option2 << l(:lable_close_mutual_evaluation)
option2 << 2
type << option1
type << option2
end
# garble count 混淆数量
# alias projectCountOrigin projectCount
# def projectCount project
# count = projectCountOrigin project
# garble count
# end
def homework_type_option
type = []
option1 = []
option2 = []
option1 << l(:label_task_submit_form_accessory)
option1 << 1
option2 << l(:label_task_submit_form_project)
option2 << 2
type << option1
type << option2
end
def proportion_option
type = []
i = 0
while i <= 100
option = []
option << i.to_s + "%"
option << i
type << option
i = i + 10
end
type
end
#alias teacherCountOrigin teacherCount
#def teacherCount project
# count = teacherCountOrigin project
# garble count
#end
# 注意:此方法有问题,速度慢且结果不准
# alias studentCountOrigin studentCount
#def studentCount course
# count = studentCountOrigin course
#garble count
# end
#获取课程所有成员
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def course_all_member course
course.members
end
# 学生人数计算
# add by nwb
def studentCount course
course ? course.student.count.to_s : 0#course.student.count
end
#课程成员数计算
def memberCount course
count = searchStudent(course).count + searchTeacherAndAssistant(course).count
count.to_s
end
def eventToLanguageCourse event_type, course
case event_type
when "issue-note"
l :label_issue
when "issue"
l :label_issue
when "attachment"
l :label_attachment
when "news"
l :label_notification
else
""
end
end
def garble count
count = count.round( 1-count.to_s.size ).to_i
return count.to_s if count.to_s.size.eql?(1)
count.to_s << '+'
end
# =====================================================================================
# return people list
def searchTeacherAndAssistant project
#searchPeopleByRoles(project, TeacherRoles)
members = []
project.members.each do |m|
members << m if m && m.user && m.user.allowed_to?(:as_teacher,project)
end
members
end
def search_student_in_group(project, course_group_id)
#searchPeopleByRoles(project, StudentRoles)
members = []
project.members.each do |m|
members << m if m && m.user && m.user.allowed_to?(:as_student,project)
end
members
end
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def searchStudent project
#searchPeopleByRoles(project, StudentRoles)
members = []
project.members.each do |m|
if m && m.user && m.user.allowed_to?(:as_student,project)
members << m
end
end
members
end
def searchStudent_by_name project, name
#searchPeopleByRoles(project, StudentRoles)
members = []
project.members.each do |m|
if m && m.user && m.user.allowed_to?(:as_student,project)
username = m.user[:lastname].to_s + m.user[:firstname].to_s
if(m.user[:login].to_s.include?(name) || m.user.user_extensions[:student_id].to_s.include?(name) || username.include?(name))
members << m
end
end
end
members
end
def searchmember_by_name members, name
#searchPeopleByRoles(project, StudentRoles)
mems = []
if name != ""
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name = name.to_s.downcase
members.each do |m|
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username = m.user[:lastname].to_s.downcase + m.user[:firstname].to_s.downcase
if(m.user[:login].to_s.downcase.include?(name) || m.user.user_extensions[:student_id].to_s.downcase.include?(name) || username.include?(name))
mems << m
end
end
else
mems = members
end
mems
end
def searchgroupmember_by_name members, name, group
#searchPeopleByRoles(project, StudentRoles)
mems = []
if name != ""
members.each do |m|
if m.course_group_id == group.id
username = m.user[:lastname].to_s + m.user[:firstname].to_s
if(m.user[:login].to_s.include?(name) || m.user.user_extensions[:student_id].to_s.include?(name) || username.include?(name))
mems << m
end
end
end
else
mems = members
end
mems
end
def searchgroupstudent_by_name(group, project, name)
members = []
group.members.each do |m|
if m && m.user && m.user.allowed_to?(:as_student,project)
username = m.user[:lastname].to_s + m.user[:firstname].to_s
if(m.user[:login].to_s.include?(name) || m.user.user_extensions[:student_id].to_s.include?(name) || username.include?(name))
members << m
end
end
end
members
end
def searchStudent_by_group group, project
#searchPeopleByRoles(project, StudentRoles)
members = []
group.members.each do |m|
members << m if m && m.user && m.user.allowed_to?(:as_student,project)
end
members
end
# =====================================================================================
#def searchCountByRoles project, roles_id
# members = searchPeopleByRoles project, roles_id
# members.count
#end
#def searchPeopleByRoles project, roles_id
# members = []
# begin
# members = project.members.joins(:member_roles).where("member_roles.role_id IN (:role_id)", {:role_id => roles_id})
# rescue Exception => e
# logger.error "[CoursesHelper] ===> #{e}"
# end
# members
#end
def sort_courses(state)
content = ''.html_safe
case state
when 0
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:courses_sort_type => '1')))
content << content_tag('li', link_to(l(:label_sort_by_influence), courses_path(:courses_sort_type => '2')))
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:courses_sort_type => '0'), :class=>"selected"), :class=>"selected")
when 1
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:courses_sort_type => '1'), :class=>"selected"), :class=>"selected")
content << content_tag('li', link_to(l(:label_sort_by_influence), courses_path(:courses_sort_type => '2')))
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:courses_sort_type => '0')))
when 2
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:courses_sort_type => '1')))
content << content_tag('li', link_to(l(:label_sort_by_influence), courses_path(:courses_sort_type => '2'), :class=>"selected"), :class=>"selected")
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:courses_sort_type => '0')))
end
content = content_tag('ul', content)
content_tag('div', content, :class => "tabs")
end
def render_course_hierarchy(courses)
render_course_nested_lists(courses) do |course|
s = link_to_course(course, {}, :class => "#{course.css_classes} #{User.current.member_of_course?(course) ? 'my-course' : nil}").html_safe
s
end
end
#useless
#def searchMembersByRole project, role_id
# members = []
# begin
# members = project.members.joins(:member_roles).where("member_roles.role_id = :role_id", {:role_id => role_id })
# rescue Exception => e
# logger.error "[CoursesHelper] ===> #{e}"
# end
# members
#end
def sort_course(state, school_id)
content = ''.html_safe
case state
when 0
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:course_sort_type => '0'), :school_id => school_id, :class=>"selected"), :class=>"selected")
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:course_sort_type => '1', :school_id => school_id)))
content << content_tag('li', link_to(l(:label_sort_by_activity), courses_path(:course_sort_type => '3', :school_id => school_id)))
when 1
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:course_sort_type => '0', :school_id => school_id)))
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:course_sort_type => '1', :school_id => school_id), :class=>"selected"), :class=>"selected")
content << content_tag('li', link_to(l(:label_sort_by_activity), courses_path(:course_sort_type => '3', :school_id => school_id)))
when 2
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:course_sort_type => '0', :school_id => school_id)))
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:course_sort_type => '1', :school_id => school_id)))
content << content_tag('li', link_to(l(:label_sort_by_activity), courses_path(:course_sort_type => '3', :school_id => school_id)))
#gcm
when 3
content << content_tag('li', link_to(l(:label_sort_by_time), courses_path(:course_sort_type => '0', :school_id => school_id)))
content << content_tag('li', link_to(l(:label_sort_by_active), courses_path(:course_sort_type => '1', :school_id => school_id)))
content << content_tag('li', link_to(l(:label_sort_by_activity), courses_path(:course_sort_type => '3', :school_id => school_id), :class=>"selected"), :class=>"selected")
end
#gcmend
content = content_tag('ul', content)
content_tag('div', content, :class => "tabs")
end
def findCourseTime project
str = ""
begin
@course = Course.find_by_extra(@project.identifier)
date_format = l(:zh_date)[:formats][:default]
if @course
str = DateTime.parse(@course.setup_time.to_s).strftime("#{date_format}").to_s unless @course.setup_time.blank?
str << '-' unless @course.setup_time.blank?
str << DateTime.parse(@course.endup_time.to_s).strftime("#{date_format}").to_s unless @course.endup_time.blank?
end
rescue Exception => e
logger.error "[CoursesHelper] ===> #{e}"
end
str
end
# added by meng
# 课程time+term简写2014.春/2014.秋)国际化输出
def get_course_term course
strterm = course.try(:term).to_s
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if !(User.current.language == 'zh'||User.current.language == '')
strterm == '春季学期' ? strterm = 'spring term' : strterm = 'autumn term'
str = ( course.try(:time).to_s << '.' << strterm )
str[0..-6]
else
str = ( course.try(:time).to_s << '.' << strterm )
str[0..-4]
end
end
# added by meng
# 课程term春季学期/秋季学期)国际化输出
def get_course_term_locales course
str = course.try(:term).to_s
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if !(User.current.language == 'zh'||User.current.language == '')
str == '春季学期' ? str = ' ' + 'spring term' : str = ' ' + 'autumn term'
end
return str
end
def members_to_user_ids members
people = []
members.each { |member|
people << member.user_id
}
people
end
# 截至到2014-03-17 这个是最终的判断课程是否过期的方法
def course_endTime_timeout? course
end_time_str = course.try(:endup_time)
begin
cTime = Time.parse(end_time_str.to_s)
rescue TypeError,ArgumentError
cTime = Time.parse("3000-01-01")
end
now = Time.now
now > cTime
end
def find_by_extra_from_project extra
Course.find_by_extra(try(extra))
end
#判断指定用户是不是当前课程的老师
def is_course_teacher (user,course)
user.allowed_to?(:as_teacher,course)
end
#当前用户是不是指定课程的学生
def is_cur_course_student course
User.current.logged? && User.current.member_of_course?(course) && !(User.current.allowed_to?(:as_teacher,course))
end
#获取当前用户在指定作业下提交的作业的集合
def cur_user_homework_for_bid bid
bid.homeworks.where("user_id = ?",User.current)
end
#判断当前用户对指定作业是否已经评价过
def has_evaluation? homework
seem_count = homework.rates(:quality).where("rater_id = ?",User.current).count
seem_count > 0
end
#获取指定作业的所有成员
def users_for_homework homework
homework.nil? ? [] : (homework.users + [homework.user])
end
#获取指定项目的得分
def project_score project
issue_count = project.issues.count
issue_journal_count = project.issue_changes.count
issue_score = issue_count * 0.2
issue_journal_score = issue_journal_count * 0.1
finall_issue_score = issue_score + issue_journal_score
new_count = project.news.count
new_score = new_count * 0.1
finall_new_score = new_score
document_count = project.documents.count
file_score = document_count * 0.1
finall_file_score = file_score
changeset_count = project.changesets.count
code_submit_score = changeset_count * 0.3
finall_code_submit_score = code_submit_score
board_message_count = 0
project.boards.each do |board|
board_message_count += board.messages_count
end
topic_score = board_message_count * 0.1
#finall_topic_score = topic_score
finall_project_score = finall_issue_score + finall_new_score + finall_file_score + finall_code_submit_score + topic_score
format("%.2f",finall_project_score)
end
#获取指定作业的参与人员
#返回结果:张三、李四、王五
def homework_user_of_homework homework,is_teacher
homework_users = ""
homework.users.each do |user|
homework_users = homework_users + (is_teacher ? (user.lastname + user.firstname) : user.login)
if user != homework.users.last
homework_users = homework_users + ""
end
end
return homework_users
end
def get_courses_by_tag(tag_name)
Course.tagged_with(tag_name).order('updated_at desc')
end
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#分班下拉框
def course_group_option course
type = []
option1 = []
option1 << "暂无"
option1 << 0
type << option1
unless course.course_groups.nil?
course.course_groups.each do |cg|
option = []
option << cg.name
option << cg.id
type << option
end
end
type
end
#课程实践年份下拉框
def course_time_option year
type = []
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month = Time.now.month
now_year = year.nil? ? Time.now.year : (Time.now.year <= year ? Time.now.year : year)
year = month < 2 && now_year >=Time.now.year ? now_year - 1 : now_year
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for i in (year..year + 10)
option = []
option << i
option << i
type << option
end
type
end
#课程课时下拉框
def course_term_option
type = []
option1 = []
option1 << l(:label_spring)
option1 << l(:label_spring)
option2 = []
option2 << l(:label_summer)
option2 << l(:label_summer)
option3 = []
option3 << l(:label_autumn)
option3 << l(:label_autumn)
type << option1
type << option2
type << option3
type
end
def cur_course_term
month = Time.now.month
if month >= 9 || month < 2
term = "秋季学期"
elsif (month >= 7 && Time.now.day >= 15) || month == 8
term = "夏季学期"
else
term = "春季学期"
end
term
end
def course_in_current_or_next_term course
is_current_term = false
is_next_term = false
year_now = Time.now.month < 2 ? Time.now.year - 1:Time.now.year
if course.time == year_now && course.term == cur_course_term
is_current_term = true
end
if cur_course_term == "秋季学期" && course.time == (year_now + 1) && course.term == "春季学期"
is_next_term = true
elsif cur_course_term == "春季学期" && course.time == year_now && course.term == "夏季学期"
is_next_term = true
elsif cur_course_term == "夏季学期" && course.time == year_now && course.term == "秋季学期"
is_next_term = true
end
is_current_term || is_next_term
end
#获取课程动态
def get_course_activity courses, activities
@course_ids=activities.keys()
days = Setting.activity_days_default.to_i
#原来课程动态计算当期时间前(一年+一月)的动态
# date_to ||= Date.today + 1
# #date_from = date_to - days-1.years
date_from = @course.created_at.to_date-days
#file_count
Attachment.where(container_id: @course_ids, container_type: Course).where("created_on>?", date_from).each do |attachment|
if attachment.is_public? || User.current.member_of_course?(@course) || User.current.admin?
activities[attachment.container_id]+=1
else
activities[attachment.container_id]
end
end
#message_count
Board.where(course_id: @course_ids).each do |board|
countmessage = 0
# 课程人员退出课程后,之前在讨论区回帖不计入课程动态统计
board.messages.where("updated_on>?", date_from).each do |message|
if message.author.member_of_course?(@course)
countmessage+=1
end
end
activities[board.course_id]+=countmessage
end
#news
News.where(course_id: @course_ids).where("created_on>?",date_from).each do |news|
if news.author.member_of_course?(@course)
activities[news.course_id]+=1
end
end
#homework_count
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# HomeworkForCourse.where(course_id: @course_ids).each do |homework|
# countbid=0
# # @bid_ids<<homework.bid_id
# Bid.where(id: homework.bid_id).where("created_on>?",date_from).each do |bid|
# countbid+=1
# end
# activities[homework.course_id]+=countbid
# end
#poll_count
# 动态目前只统计发布的问卷,关闭的问卷不在动态内显示
# Poll.where(polls_group_id: @course_ids, polls_type: Course, polls_status: 2||3).where("published_at>?",date_from).each do |poll|
Poll.where(polls_group_id: @course_ids, polls_type: Course, polls_status: 2||3).where("published_at>?",date_from).each do |poll|
activities[poll.polls_group_id]+=1
end
#end
# 动态数 + 1 ( 某某创建了该课程 )
activities.each_pair { |key, value| activities[key] = value + 1 }
return activities
end
#获取某个课程的动态数
def course_activity_count course
course_activity_count=Hash.new
course_activity_count[course.id]=0
count = get_course_activity([course],course_activity_count)[course.id]
count.nil? ? 0 : count
end
#重启、关闭课程按钮
def set_course_time course
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# id = "finish_course_#{course.id}"
# linkPath = course_endTime_timeout?(course) ? restartcourse_course_path(course) : finishcourse_course_path(course, format: :js)
# desc = course_endTime_timeout?(course) ? l(:label_course_reload) : l(:label_course_closed)
# link_to "<span class='pr_close'></span>#{desc}".html_safe, linkPath, :remote => true, :method => :post, :id => id, :confirm => l(:label_course_closed_tips, :desc => desc), :class => "pr_join_a"
end
#加入课程、退出课程按钮
def join_in_course_header(course, user, options=[])
if user.logged?
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joined = course.members.map{|member| member.user_id}.include? user.id
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text = joined ? l(:label_course_exit_student) : l(:label_course_join_student)
url = joined ? join_path(:object_id => course.id) : try_join_path(:object_id => course.id)
method = joined ? 'delete' : 'post'
if joined
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link = link_to(text, url, :remote => true, :method => method, :class => "pr_join_a", :id => "#{course.id}", :confirm => l(:text_are_you_sure_out))
else
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link = link_to(text, url, :remote => true, :method => method, :id => "#{course.id}", :class => "pr_join_a")
end
else
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link = "<span class='pr_join_span mr5' >#{l(:label_course_join_student)}</span>"
end
link.html_safe
end
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def visable_attachemnts_incourse course
return[] unless course
result = []
course.attachments.each do |attachment|
if (attachment.is_public? && attachment.is_publish == 1) ||User.current == attachment.author ||User.current.allowed_to?(:as_teacher,course)|| (User.current.member_of_course?(course) && attachment.is_publish == 1) || User.current.admin?
result << attachment
end
end
result
end
def zh_course_role role
if role == "TeachingAsistant"
result = l(:label_TA)
elsif role == "Teacher"
result = l(:label_teacher)
elsif role == "Student"
result = l(:label_student)
elsif role == "Manager"
result = l(:field_admin)
end
result
end
#生成课程相关动态的链接
def course_activity_link activity
# activity = CourseActivity.first
title = ""
url = ""
if activity.course_act
case activity.course_act_type
when "Course"
title = activity.course_act.name
url = course_path activity.course
when "HomeworkCommon"
title = "作业&nbsp;" + activity.course_act.name
url = student_work_index_path(:homework => activity.course_act.id)
when "News"
title = "通知公告&nbsp;" + activity.course_act.title
url = course_news_index_path(activity.course)
when "Attachment"
title = "课件&nbsp;" + activity.course_act.filename
url = course_files_path(activity.course)
when "Message"
title = "课程讨论区&nbsp;" + activity.course_act.subject
url = course_boards_path(activity.course,:parent_id => activity.course_act.parent_id ? activity.course_act.parent_id : activity.course_act.id, :topic_id => activity.course_act.id)
when "JournalsForMessage"
title = "留言&nbsp;" + activity.course_act.notes
url = course_feedback_path(activity.course)
when "Poll"
title = "问卷&nbsp;" + activity.course_act.polls_name
url = poll_path(activity.course_act_id)
end
end
link_to title.gsub(/<(?!img)[^>]*>/,'').html_safe, url, :class => "problem_tit c_dblue fl fb"
end
#课程动态的描述
def course_activity_desc activity
desc = ""
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if activity.course_act
case activity.course_act_type
when "Course"
desc = ""
when "HomeworkCommon"
desc = activity.course_act.description
when "News"
desc = activity.course_act.description
when "Attachment"
desc = ""
when "Message"
desc = activity.course_act.content
when "JournalsForMessage"
desc = ""
when "Poll"
desc = activity.course_act.polls_description
end
end
desc.html_safe
end
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# 学生按作业总分排序取前8个
def hero_homework_score(course, score_sort_by)
sql_select = "SELECT members.*,(
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SELECT SUM(IF(student_works.final_score is null,null,student_works.final_score - student_works.absence_penalty - student_works.late_penalty))
FROM student_works,homework_commons
WHERE student_works.homework_common_id = homework_commons.id
AND homework_commons.course_id = #{course.id}
AND student_works.user_id = members.user_id
) AS score
FROM members
JOIN students_for_courses
ON students_for_courses.student_id = members.user_id AND students_for_courses.course_id = members.course_id
WHERE members.course_id = #{course.id} ORDER BY score #{score_sort_by} limit 9"
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homework_scores = Member.find_by_sql(sql_select)
end
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def contributor_course_scor(course_id)
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ccs = CourseContributorScore.find_by_sql("SELECT * FROM `course_contributor_scores` where course_id = #{course_id} order by
(message_num*2 + message_reply_num + news_reply_num + news_num +
resource_num*5 + journal_num + homework_journal_num ) desc limit 9;")
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end
end
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