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#coding=utf-8
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class CoursesService
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include ApplicationHelper
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include CoursesHelper
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include HomeworkAttachHelper
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include ApiHelper
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#参数school_id为0或不传时返回所有课程，否则返回对应学校的课程
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#参数per_page_count分页功能，每页显示的课程数
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#参数page分页功能，当前页码
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def course_list params,current_user
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@school_id = params[:school_id]
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per_page_option = params[:per_page_count] || 10
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page_no = params[:page] || 1
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if @school_id == "0" || @school_id.nil?
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@courses_all = Course.active.visible.
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joins("LEFT JOIN #{CourseStatus.table_name} ON #{Course.table_name}.id = #{CourseStatus.table_name}.course_id")
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else
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@courses_all = Course.active.visible.
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joins("LEFT JOIN #{CourseStatus.table_name} ON #{Course.table_name}.id = #{CourseStatus.table_name}.course_id").
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where("#{Course.table_name}.school_id = ?", @school_id)
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end
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@course_count = @courses_all.count
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@course_pages = Redmine::Pagination::Paginator.new @course_count, per_page_option,page_no
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@courses = @courses_all.order("created_at desc")
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@courses = @courses.offset(@course_pages.offset).limit(@course_pages.per_page)
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course_list = []
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@courses.each do |course|
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course_list << {:course => course,:img_url => url_to_avatar(course),:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course)}
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end
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course_list
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end
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#搜索课程
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def search_course params,current_user
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courses_all = Course.all_course
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name = params[:name]
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if name.blank?
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raise 'sumbit empty'
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end
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@courses = courses_all.visible(current_user)
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if params[:name].present?
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@courses_all = @courses.like(params[:name]).order("created_at desc")
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else
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@courses_all = @courses.order("created_at desc");
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end
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@courses_all
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course_list = []
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@courses_all.each do |course|
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course_list << {:course => course,:img_url => url_to_avatar(course),:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course)}
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end
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course_list
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end
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#获取头像
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def get_img obj
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url_to_avatar(obj)
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end
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#课程老师或课程学生列表
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def course_teacher_or_student_list params,course,current_user
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if course.is_a?(Course)
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c = course
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else
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c = Course.find(course)
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end
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if current_user.nil? || !(current_user.admin? || c.is_public == 1 || (c.is_public == 0 && current_user.member_of_course?(c)))
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raise '403'
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end
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@teachers= searchTeacherAndAssistant(c)
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#@canShowCode = isCourseTeacher(User.current.id,course) && params[:role] != '1'
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case params[:role]
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when '1'
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#@subPage_title = l :label_teacher_list
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@members = searchTeacherAndAssistant(c)
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when '2'
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#@subPage_title = l :label_student_list
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@members = searchStudent(c)
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else
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#@subPage_title = ''
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@members = c.member_principals.includes(:roles, :principal).all.sort
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end
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users = []
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@members.each do |m|
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img_url = url_to_avatar(m.user)
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gender = m.user.user_extensions.gender.nil? ? 0 : m.user.user_extensions.gender
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work_unit = get_user_work_unit m.user
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location = get_user_location m.user
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users << {:id => m.user.id, :img_url => img_url, :nickname => m.user.login, :gender => gender, :work_unit => work_unit, :mail => m.user.mail, :location => location, :brief_introduction => m.user.user_extensions.brief_introduction}
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end
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users
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end
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#获取用户的工作单位
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def get_user_work_unit user
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work_unit = ""
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if user.user_extensions.identity == 0 || user.user_extensions.identity == 1
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work_unit = user.user_extensions.school.name unless user.user_extensions.school.nil?
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elsif user.user_extensions.identity == 3
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work_unit = user.user_extensions.occupation
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elsif user.user_extensions.identity == 2
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work_unit = user.firstname
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end
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work_unit
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end
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#获取用户地区
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def get_user_location user
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location = ""
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location << (user.user_extensions.location || '')
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location << (user.user_extensions.location_city || '')
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location
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end
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#课程通知列表
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def course_news_list params,current_user
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if params[:course_id] && @course==nil
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@course = Course.find(params[:course_id])
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end
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if current_user.nil? || !(current_user.admin? || @course.is_public == 1 || (@course.is_public == 0 && current_user.member_of_course?(@course)))
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raise '403'
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end
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scope = @course ? @course.news.course_visible(current_user) : News.course_visible(current_user)
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news = []
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scope.each do |n|
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news << {:id => n.id,:title => n.title,:author_name => n.author.name,:author_id => n.author.id, :description => n.description,:created_on => format_time(n.created_on),:comments_count => n.comments_count}
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end
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news
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end
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#查看新闻权限验证
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def show_course_news_authorize(current_user)
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unless current_user.allowed_to?({:controller => 'news', :action => 'show'}, false)
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raise '403'
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end
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end
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#显示课程通知(包括评论) 需验证权限
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def show_course_news params,current_user
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@news = News.find(params[:id])
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@course = @news.course
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if @course
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if current_user.nil? || !(current_user.admin? || @course.is_public == 1 || (@course.is_public == 0 && current_user.member_of_course?(@course)))
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raise '403'
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end
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end
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@comments = @news.comments
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@comments.reverse! if current_user.wants_comments_in_reverse_order?
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{:news => @news,:comments => @comments}
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#comments = []
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#@comments.each do |comment|
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# comments << {:author_id => comment.author_id,:author_name => comment.author.name,:commont_content => comment.comments,:time => format_time(comment.created_on)}
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#end
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#{:title => @news.title,:author_name => @news.author.name,:author_id => @news.author.id, :description => @news.description,:created_on => format_time(@news.created_on),
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# :comments_count => @news.comments_count,:comments => comments}
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end
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#显示课程
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def show_course(params,current_user)
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course = Course.find(params[:id])
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if course.school
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work_unit = course.school.name
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else
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work_unit = get_user_work_unit course.teacher
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end
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unless (course.is_public == 1 || current_user.member_of_course?(course) || current_user.admin?)
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raise '403'
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end
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{:course => course,:work_unit => work_unit, :img_url => url_to_avatar(course),:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course)}
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end
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#创建课程
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#current_user当前用户对象（不是id）
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# params[:course][:name]:课程名称
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#params[:course][:password]:密码
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#params[:course][:description]:描述
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#params[:course][:is_public]:是否公开1公开，0私有
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#params[:course][:open_student]:是否公开学生列表1公开，0不公开，不公开时非课程成员无法看到学生列表
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#params[:course][:course_type]:暂时默认给1值。
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#params[:term]：学期（秋季学期或春季学期）
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#params[:time]: 年份（例：2014）
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#params[:setup_time]：暂不传（貌似已经没用了）
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#params[:endup_time]: 暂不传（貌似已经没用了）
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#params[:class_period]:学时总数
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def create_course(params,current_user)
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if current_user.user_extensions.identity
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@course = Course.new
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@course.extra = 'course' + DateTime.parse(Time.now.to_s).strftime('%Y-%m-%d_%H-%M-%S').to_s
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@course.send(:safe_attributes=, params[:course], current_user)
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#@course.safe_attributes(current_user,params[:course])
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@course.tea_id = current_user.id
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@course.term = params[:term]
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@course.time = params[:time]
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#@course.school_id = params[:occupation]
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@course.school_id = current_user.user_extensions.school_id
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@course.setup_time = params[:setup_time]
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@course.endup_time = params[:endup_time]
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@course.class_period = params[:class_period].to_i
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params[:course][:is_public] ? @course.is_public = 1 : @course.is_public = 0
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params[:course][:open_student] ? @course.open_student = 1 : @course.open_student = 0
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end
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@issue_custom_fields = IssueCustomField.sorted.all
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@trackers = Tracker.sorted.all
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if @course.save
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#unless User.current.admin?
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r = Role.givable.find_by_id(Setting.new_project_user_role_id.to_i) || Role.givable.first
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m = Member.new(:user => current_user, :roles => [r])
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m.project_id = -1
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course = CourseInfos.new(:user_id => current_user.id, :course_id => @course.id)
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#user_grades = UserGrade.create(:user_id => User.current.id, :course_id => @course.id)
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if params[:course][:is_public] == '1'
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course_status = CourseStatus.create(:course_id => @course.id, :watchers_count => 0, :changesets_count => 0, :grade => 0, :course_type => @course_tag)
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end
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@course.members << m
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@course.course_infos << course
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end
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{:course => @course,:img_url => url_to_avatar(@course),:current_user_is_member => current_user.member_of_course?(@course),:current_user_is_teacher => is_course_teacher(current_user,@course)}
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end
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#验证编辑课程的权限
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#当前
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def edit_course_authorize(current_user,course)
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unless current_user.allowed_to?({:controller => 'courses', :action => 'update'}, course)
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raise '403'
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end
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end
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#编辑课程 需验证权限
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# params[:course][:name]:课程名称
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#params[:course][:password]:密码
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#params[:course][:description]:描述
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#params[:course][:is_public]:是否公开1公开，0私有
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#params[:course][:open_student]:是否公开学生列表1公开，0不公开，不公开时非课程成员无法看到学生列表
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#params[:course][:course_type]:暂时默认给1值。
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#params[:term]：学期（秋季学期或春季学期）
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#params[:time]: 年份（例：2014）
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#params[:class_period]:学时总数
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def edit_course(params,course,current_user)
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course.send(:safe_attributes=, params[:course], current_user)
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#course.safe_attributes = params[:course]
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course.time = params[:time]
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course.term = params[:term]
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course.class_period = params[:class_period].to_i
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params[:course][:is_public] ? course.is_public = 1 : course.is_public = 0
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params[:course][:open_student] ? course.open_student = 1 : course.open_student = 0
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if course.save
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if params[:course][:is_public] == '0'
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course_status = CourseStatus.find_by_course_id(course.id)
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course_status.destroy if course_status
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elsif params[:course][:is_public] == '1'
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course_status = CourseStatus.find_by_course_id(course.id)
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course_status.destroy if course_status
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course_status = CourseStatus.create(:course_id => course.id, :grade => 0)
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end
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end
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{:course => course,:img_url => url_to_avatar(course),:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course)}
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end
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#退出课程
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#object_id: 课程id
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#user：当前用户
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#@state == 0 退出成功
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#@state == 1 不在课程中
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#@state == 2 您还未登录
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#@state 其他 未知错误，请稍后再试
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def exit_course params,user
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if user.nil?
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@state = 2
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return @state
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end
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@member = Member.where('course_id = ? and user_id = ?', params[:object_id], user.id)
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if @member.nil? || @member.count == 0
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@state = 1
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return @state
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end
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@member.first.destroy
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joined = StudentsForCourse.where('student_id = ? and course_id = ?', user.id, params[:object_id])
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joined.each do |join|
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join.delete
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@state = 0
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end
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@state
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end
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#加入课程
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#object_id：课程id
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#course_password ：加入课程的密码
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#@state == 0 加入成功
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#@state == 1 密码错误
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#@state == 2 课程已过期 请联系课程管理员重启课程。(在配置课程处)
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#@state == 3 您已经加入了课程
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#@state == 4 您加入的课程不存在
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#@state == 5 您还未登录
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#@state 其他 未知错误，请稍后再试
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def join_course params,current_user
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course = Course.find_by_id params[:object_id]
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@state = 10
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if course
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if course_endTime_timeout? course
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@state = 2
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else
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if current_user.member_of_course?(course)
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@state = 3
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else
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if params[:course_password] == course.password
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members = []
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members << Member.new(:role_ids => [10], :user_id => current_user.id)
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course.members << members
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StudentsForCourse.create(:student_id => current_user.id, :course_id => params[:object_id])
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@state = 0
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else
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@state = 1
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end
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end
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end
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else
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@state = 4
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end
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{:state => @state,:course => course}
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end
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#作业列表
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#已提交的作业数量获取 bid.homeworks.count
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#学生提问数量获取 bid.commit.nil? ? 0 : bid.commit
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def homework_list params,current_user
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course = Course.find(params[:id])
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if course.is_public != 0 || current_user.member_of_course?(course)
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bids = course.homeworks.order('deadline DESC')
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bids = bids.like(params[:name]) if params[:name].present?
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homeworks = []
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bids.each do |bid|
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homeworks << show_homework_info(course,bid,current_user,is_course_teacher(current_user,course))
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end
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homeworks
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else
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raise '403'
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end
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end
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def course_dynamic(params,current_user)
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@user = User.find(params[:id])
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if current_user.nil? && !current_user.admin? && !@user.active?
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raise '404'
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return
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end
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if current_user == @user || current_user.admin?
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membership = @user.coursememberships.all
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else
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membership = @user.coursememberships.all(:conditions => Course.visible_condition(current_user))
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end
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if membership.nil? || membership.count == 0
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raise l(:label_no_courses,:locale => get_user_language(current_user))
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end
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membership.sort! {|older, newer| newer.created_on <=> older.created_on }
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result = []
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membership.each do |mp|
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course = mp.course
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latest_course_dynamics = []
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latest_news = course.news.order("created_on desc").first
|
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unless latest_news.nil?
|
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|
latest_course_dynamics << {:type => 1,:time => latest_news.created_on,:message => l(:label_recently_updated_notification,:locale => get_user_language(current_user))}
|
|
|
end
|
|
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latest_message = course.journals_for_messages.order("created_on desc").first
|
|
|
unless latest_message.nil?
|
|
|
latest_course_dynamics << {:type => 2,:time => latest_message.created_on,:message => l(:label_recently_updated_message,:locale => get_user_language(current_user))}
|
|
|
end
|
|
|
latest_attachment = course.attachments.order("created_on desc").first
|
|
|
unless latest_attachment.nil?
|
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|
latest_course_dynamics << {:type => 3,:time => latest_attachment.created_on,:message => l(:label_recently_updated_courseware,:locale => get_user_language(current_user))}
|
|
|
end
|
|
|
latest_bid = course.homeworks.order('updated_on DESC').first
|
|
|
unless latest_bid.nil?
|
|
|
latest_course_dynamics << {:type => 4,:time => latest_bid.updated_on,:message => l(:label_recently_updated_homework,:locale => get_user_language(current_user))}
|
|
|
end
|
|
|
|
|
|
# Time 2015-04-07 14:58:30
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|
# Author lizanle
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|
# Description 添加课程创建动态
|
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|
if(User.find_by_id(CourseInfos.find_by_course_id(course.id).try(:user_id)))
|
|
|
create_user_name = User.find_by_id(CourseInfos.find_by_course_id(course.id).user_id).realname
|
|
|
latest_course_dynamics << {:type => 5,:time => course.created_at,:message =>l(:label_recently,:locale => get_user_language(current_user)) << create_user_name << l(:label_creat,:locale => get_user_language(current_user))}
|
|
|
end
|
|
|
|
|
|
|
|
|
#每个作业中的最新留言
|
|
|
messages = []
|
|
|
course.homeworks.each do |bid|
|
|
|
jour = bid.journals_for_messages.order("created_on desc").first
|
|
|
unless jour.nil?
|
|
|
messages << jour
|
|
|
end
|
|
|
end
|
|
|
unless messages.count == 0
|
|
|
messages.sort!{|order,newer| newer.created_on <=> order.created_on}
|
|
|
end
|
|
|
latest_bid_message = messages.first
|
|
|
unless latest_bid_message.nil?
|
|
|
latest_course_dynamics << {:type => 4,:time => latest_bid_message.created_on,:message => l(:label_recently_updated_message,:locale => get_user_language(current_user))}
|
|
|
end
|
|
|
#每个作业中学生最后提交的作业
|
|
|
homeworks = []
|
|
|
course.homeworks.each do |bid|
|
|
|
homework_attach = bid.homeworks.order('updated_at DESC').first
|
|
|
unless homework_attach.nil?
|
|
|
homeworks << homework_attach
|
|
|
end
|
|
|
end
|
|
|
unless homeworks.count == 0
|
|
|
homeworks.sort!{|order,newer| newer.updated_at <=> order.updated_at}
|
|
|
end
|
|
|
latest_homework_attach = homeworks.first
|
|
|
unless latest_homework_attach.nil?
|
|
|
latest_course_dynamics << {:type => 4,:time => latest_homework_attach.updated_at,:message => l(:label_recently_updated_homework,:locale => get_user_language(current_user))}
|
|
|
end
|
|
|
latest_course_dynamics.sort!{|order,newer| newer[:time] <=> order[:time]}
|
|
|
latest_course_dynamic = latest_course_dynamics.first
|
|
|
unless latest_course_dynamic.nil?
|
|
|
result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:course_time => course.time,:course_term => course.term,:type => latest_course_dynamic[:type],:update_time => latest_course_dynamic[:time],:message => latest_course_dynamic[:message],:count => nil}
|
|
|
end
|
|
|
end
|
|
|
result.sort!{|order,newer| newer[:update_time] <=> order[:update_time]}
|
|
|
result
|
|
|
end
|
|
|
|
|
|
# 课程课件
|
|
|
def course_attachments params
|
|
|
result = []
|
|
|
@course = Course.find(params[:course_id])
|
|
|
@attachments = @course.attachments.order("created_on desc")
|
|
|
@attachments.each do |atta|
|
|
|
result << {:filename => atta.filename,:description => atta.description,:downloads => atta.downloads,:quotes => atta.quotes.nil? ? 0 :atta.quotes }
|
|
|
end
|
|
|
result
|
|
|
end
|
|
|
|
|
|
private
|
|
|
def show_homework_info course,bid,current_user,is_course_teacher
|
|
|
author_real_name = bid.author.lastname + bid.author.firstname
|
|
|
many_times = course.homeworks.index(bid) + 1
|
|
|
name = bid.name
|
|
|
homework_count = bid.homeworks.count #已提交的作业数量
|
|
|
student_questions_count = bid.journals_for_messages.where('m_parent_id IS NULL').count
|
|
|
description = bid.description
|
|
|
#if is_course_teacher(User.current, course) && @bid.open_anonymous_evaluation == 1 && @bid.homeworks.count >= 2
|
|
|
state = bid.comment_status
|
|
|
unless is_course_teacher
|
|
|
homework_for_anonymous_comments = get_student_batch_homework_list bid,current_user
|
|
|
end
|
|
|
#end
|
|
|
open_anonymous_evaluation = bid.open_anonymous_evaluation
|
|
|
{:course_name => course.name,:course_id => course.id,:id => bid.id, :author => bid.author,:author_real_name => author_real_name, :homework_times => many_times, :homework_name => name, :homework_count => homework_count,:student_questions_count => student_questions_count,
|
|
|
:description => description, :homework_state => state,:open_anonymous_evaluation => open_anonymous_evaluation,:homework_for_anonymous_comments => homework_for_anonymous_comments,:created_on => bid.created_on,:deadline => bid.deadline}
|
|
|
|
|
|
end
|
|
|
|
|
|
#显示作业列表的同时显示分配给当前学生匿评的作业
|
|
|
def show_homework_info_with_batch course,bid
|
|
|
author = bid.author.lastname + bid.author.firstname
|
|
|
many_times = course.homeworks.index(bid) + 1
|
|
|
name = bid.name
|
|
|
homework_count = bid.homeworks.count #已提交的作业数量
|
|
|
student_questions_count = bid.journals_for_messages.where('m_parent_id IS NULL').count
|
|
|
description = bid.description
|
|
|
#if is_course_teacher(User.current, course) && @bid.open_anonymous_evaluation == 1 && @bid.homeworks.count >= 2
|
|
|
state = bid.comment_status
|
|
|
#end
|
|
|
open_anonymous_evaluation = bid.open_anonymous_evaluation
|
|
|
{:course_name => course.name,:id => bid.id, :course_teacher => author, :homework_times => many_times, :homework_name => name, :homework_count => homework_count,:student_questions_count => student_questions_count,
|
|
|
:description => description, :homework_state => state,:open_anonymous_evaluation => open_anonymous_evaluation}
|
|
|
end
|
|
|
|
|
|
|
|
|
|
|
|
end |
