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app的课程动态界面api修改 

添加活跃学生查看，
获取作业的匿评率
This commit is contained in:
lizanle 2015-07-07 17:18:29 +08:00
parent c5e298d24e
commit 6d85dd7ca4
6 changed files with 93 additions and 21 deletions
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15
app/api/mobile/entities/course_dynamic.rb
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@ -58,10 +58,11 @@ module Mobile
course_dynamic_expose :document_count
course_dynamic_expose :topic_count
course_dynamic_expose :homework_count
course_dynamic_expose :course_student_num
course_dynamic_expose :time_from_now
course_dynamic_expose :current_user_is_member
course_dynamic_expose :current_user_is_teacher
#在dynamics里解析出四种动态
expose :documents,using:Mobile::Entities::Attachment do |f,opt|
obj = nil
f[:dynamics].each do |d|
@ -110,6 +111,16 @@ module Mobile
obj
end
expose :active_students,using:Mobile::Entities::User do |f,opt|
obj = nil
f[:dynamics].each do |d|
if d[:type] == 7
obj = d[:active_students]
end
end
obj
end
end
end
end

17
app/api/mobile/entities/homework.rb
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@ -30,6 +30,13 @@ module Mobile
f.course.homework_commons.index(f) + 1
when :homework_status_teacher
homework_status_desc f
when :student_evaluation_part
get_evaluation_part f ,3
when :ta_evaluation_part
get_evaluation_part f , 2
when :homework_anony_type
val = f.homework_type == 1 && !f.homework_detail_manual.nil?
val
end
end
end
@ -79,12 +86,14 @@ module Mobile
homework_expose :homework_submit_num
homework_expose :homework_notsubmit_num
expose :submit_student_list ,using: Mobile::Entities::User do |f,opt|
get_submit_sutdent_list f
end
homework_expose :homework_status_student #老师看到的作业的状态
homework_expose :homework_status_student #学生看到的作业的状态
homework_expose :homework_status_teacher #老师看到的状态
homework_expose :student_evaluation_part #学生匿评比率
homework_expose :ta_evaluation_part #教辅评价比率
homework_expose :homework_anony_type #是否是匿评作业
end
end
end

2
app/api/mobile/entities/user.rb
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@ -53,6 +53,8 @@ module Mobile
user_expose :score
#学号
user_expose :student_num
# 活跃值
user_expose :active_count
end
end

32
app/helpers/api_helper.rb
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@ -129,9 +129,39 @@ module ApiHelper
def show_homework_deadline homework
day = 0
if (day = (Date.parse(homework.end_time.to_s) - Date.parse(Time.now.to_s)).to_i) > 0
"距作业截止还有" << (Date.parse(Time.now.to_s) - Date.parse(homework.end_time.to_s)).to_i.to_s << "天"
"距作业截止还有" << day.to_s << "天"
else
"已截止，但可补交"
end
end
#获取作业中学生的匿评比率
# 匿评比率 = 学生总共评价的作业的作业份数 / 作业份数 * 分配数 * 100%
# 教辅匿评比率 = 教辅已经评价的作业份数 / 总的作业份数 * 100%
def get_evaluation_part homework,role
homework_eva_completed_task_num = 0
homework_eva_task_num = 0
#匿评作业 # 且匿评状态不是还没有开启匿评
if homework.homework_type == 1 && homework.homework_detail_manual && homework.homework_detail_manual.comment_status != 1
# 总共需要评价的任务数
homework_eva_task_num = homework.homework_detail_manual.evaluation_num * homework.student_works.count
unless homework_eva_task_num == 0 #总任务数不为0 的情况下
#获取已经评价了多少的份作业 student_work_score里记录了评价情况，每条记录有提交作业的id
#先求出提交作业的id集合
work_ids = "(" + homework.student_works.map(&:id).join(",") + ")"
#只要 student_work_score 中的 student_work_id在work_ids集合中，那么久说明这个任务被完成了
sql = "select count(1) from student_works_scores where reviewer_role = #{role} and student_work_id in #{work_ids} "
homework_eva_completed_task_num = ActiveRecord::Base.connection().select_value(sql)
end
end
if homework_eva_task_num == 0
0
else
( homework_eva_completed_task_num / homework_eva_task_num.to_f * 100 ) .round(2)
end
end
end

36
app/services/courses_service.rb
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@ -4,6 +4,7 @@ class CoursesService
include CoursesHelper
include HomeworkAttachHelper
include ApiHelper
include ActionView::Helpers::DateHelper
#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
#参数per_page_count分页功能，每页显示的课程数
@ -657,22 +658,12 @@ class CoursesService
membership.each do |mp|
course = mp.course
latest_course_dynamics = []
dynamics_count = 0
# 课程学霸 学生总分数排名靠前的5个人
homework_count = course.homework_commons.count
sql = "select users.*,sum(IFNULL(0,student_works.final_score))/#{homework_count} score from student_works left outer join users on student_works.user_id = users.id" <<
" where homework_common_id in ( select id from homework_commons where homework_commons.course_id = #{course.id}) GROUP BY student_works.user_id ORDER BY score limit 0,6"
better_students = User.find_by_sql(sql)
if homework_count != 0 && !better_students.empty?
latest_course_dynamics <<{:type=> 6,:time=>Time.now.to_s,:count=> 6,:better_students=> better_students}
dynamics_count += 1
end
# 课程通知
latest_news = course.news.page(1).per(2).order("created_on desc")
unless latest_news.first.nil?
latest_course_dynamics << {:type => 1, :time => latest_news.first.created_on,:count=>course.news.count,
:news => latest_news.all}
dynamics_count += 1
end
# 课程讨论区
@ -694,12 +685,31 @@ class CoursesService
homeworks = course.homework_commons.page(1).per(2).order('created_at desc')
unless homeworks.first.nil?
latest_course_dynamics << {:type => 4, :time => homeworks.first.updated_at, :count=>course.homework_commons.count , :homeworks => homeworks}
dynamics_count += 1
end
latest_course_dynamics.sort! { |order, newer| newer[:time] <=> order[:time] }
# 课程学霸 学生总分数排名靠前的5个人
homework_count = course.homework_commons.count
sql = "select users.*,sum(IFNULL(0,student_works.final_score))/#{homework_count} score from student_works left outer join users on student_works.user_id = users.id" <<
" where homework_common_id in ( select id from homework_commons where homework_commons.course_id = #{course.id}) GROUP BY student_works.user_id ORDER BY score limit 0,4"
better_students = User.find_by_sql(sql)
# 找出在课程讨论区发帖回帖数最多的
active_students = []
sql1 = " select users.*,count(author_id) active_count from messages " <<
" LEFT JOIN users on messages.author_id = users.id " <<
" where messages.board_id in (select id from boards where boards.course_id = #{course.id} ) " <<
" GROUP BY messages.author_id ORDER BY count(author_id) desc " <<
" limit 0,4"
active_students = User.find_by_sql(sql1)
if homework_count != 0 && !better_students.empty?
latest_course_dynamics <<{:type=> 6,:time=>Time.now.to_s,:count=> 4,:better_students=> better_students}
end
unless active_students.empty?
latest_course_dynamics <<{:type=> 7,:time=>Time.now.to_s,:count=> 4,:active_students=>active_students}
end
latest_course_dynamic = latest_course_dynamics.first
unless latest_course_dynamic.nil?
result << {:course_name => course.name,:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course), :course_id => course.id, :course_img_url => url_to_avatar(course), :course_time => course.time, :course_term => course.term,:message => dynamics_count, :dynamics => latest_course_dynamics, :count => dynamics_count}
result << {:course_name => course.name,:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course), :course_id => course.id, :course_img_url => url_to_avatar(course), :course_time => course.time, :course_term => course.term,:message => "", :dynamics => latest_course_dynamics,
:course_student_num=>course ? course.members.count : 0,:time_from_now=> distance_of_time_in_words(Time.now, latest_course_dynamic[:time].to_time) << "前"}
end
end
#返回数组集合

10
db/schema.rb
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@ -721,6 +721,16 @@ ActiveRecord::Schema.define(:version => 20150702073308) do
add_index "journal_details", ["journal_id"], :name => "journal_details_journal_id"
create_table "journal_details_copy", :force => true do |t|
t.integer "journal_id", :default => 0, :null => false
t.string "property", :limit => 30, :default => "", :null => false
t.string "prop_key", :limit => 30, :default => "", :null => false
t.text "old_value"
t.text "value"
end
add_index "journal_details_copy", ["journal_id"], :name => "journal_details_journal_id"
create_table "journal_replies", :id => false, :force => true do |t|
t.integer "journal_id"
t.integer "user_id"