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class PollQuestionsController < ApplicationController
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before_action :require_login
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before_action :get_poll,only:[:new,:create]
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before_action :get_poll_question,except: [:new,:create]
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before_action :is_course_teacher
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before_action :get_poll_questions_count,only:[:create]
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before_action :get_poll_question_answers,only:[:edit,:update]
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before_action :check_poll_status,only: [:new,:create,:delete_answer,:destroy]
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before_action :validates_params,only:[:create,:update]
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before_action :validates_update_params,only: [:update]
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def new
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ActiveRecord::Base.transaction do
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begin
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@poll_question = @poll.poll_questions.new
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("页面调用失败！")
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raise ActiveRecord::Rollback
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end
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end
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end
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# 创建题目和选择的答案
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def create
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ActiveRecord::Base.transaction do
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begin
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poll_options = {
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:question_title => params[:question_title],
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:question_type => params[:question_type],
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:is_necessary => params[:is_necessary].to_i,
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:question_number => @poll_ques_count + 1,
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:max_choices => params[:max_choices] || nil,
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:min_choices => params[:min_choices] || nil
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}
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@poll_question = @poll.poll_questions.new(poll_options)
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if params[:insert_id].present? #插入问题时，那么从插入的这个id以后的question_num都将要+1
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insert_poll = @poll.poll_questions.find_by(id: params[:insert_id])
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if insert_poll.present? #如果该问题存在的话，意思是如果是第一题，那么就不存在插入
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ques_num = insert_poll.question_number.to_i
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@poll_question.question_number = ques_num + 1 #更新了问题的位置
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@poll.poll_questions.insert_question(ques_num).update_all("question_number = question_number + 1")
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end
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end
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if @poll_question.save
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if params[:question_type] != 3
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p_answer = params[:question_answers]
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p_other_answer = params[:question_other_answer]
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# 新增选择题答案选择的选项
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(1..p_answer.count).each do |i|
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answer = p_answer[i-1] # 传入的答案的内容
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question_option = {
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:answer_position => i,
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:answer_text => answer
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}
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poll_answers = @poll_question.poll_answers.new question_option
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poll_answers.save
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end
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# 新增答案的其他选项
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if p_other_answer
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question_option = {
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:answer_position => p_answer.count + 1,
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:answer_text => ''
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}
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poll_answers = @poll_question.poll_answers.new question_option
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poll_answers.save
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end
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end
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end
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("问卷的问题创建失败！")
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raise ActiveRecord::Rollback
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end
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end
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end
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def show
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ActiveRecord::Base.transaction do
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begin
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@poll_answers = @poll_question.poll_answers
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("页面调用失败！")
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raise ActiveRecord::Rollback
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end
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end
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end
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def edit
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ActiveRecord::Base.transaction do
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begin
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@poll_answers = @poll_question.poll_answers
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("页面调用失败！")
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raise ActiveRecord::Rollback
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end
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end
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end
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def update
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ActiveRecord::Base.transaction do
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begin
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if @poll_question.question_type < 3 #当为单选题或多选题时
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p_answer = params[:question_answers]
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p_other_answer = params[:question_other_answer]
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p_answer_count = p_answer.count
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@poll_question.poll_answers.each do |an|
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if (p_answer_count < @poll_current_answers) && (p_answer_count..@poll_current_answers).to_a.include?(an.answer_position)
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an.destroy
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end
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end
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(1..p_answer_count).each do |i|
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answer = @poll_question.poll_answers.find_answer_by_custom("answer_position",i).first
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if answer # 判断该位置的answer是否存在，存在则更新.不存在则跳到下一步
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answer.answer_text = p_answer[i-1]
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answer.answer_position = i
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answer.save
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else
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answer_options = {
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:answer_position => i,
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:answer_text => p_answer[i-1]
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}
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@poll_question.poll_answers.new answer_options
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end
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end
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if p_other_answer #判断答案的其他选项是否存在
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other_answer = @poll_question.poll_answers.find_answer_by_custom("answer_text","").first
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if other_answer.blank?
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question_option = {
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:answer_position => p_answer_count + 1,
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:answer_text => ''
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}
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@poll_question.poll_answers.new question_option
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else
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other_answer.answer_position = p_answer_count + 1
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other_answer.save
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end
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end
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end
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@poll_question.update_attributes(poll_questions_params)
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("更新失败")
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raise ActiveRecord::Rollback
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end
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end
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end
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def delete_answer
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ActiveRecord::Base.transaction do
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begin
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answer_d_id = params[:answer_no].to_i # 答案的当前位置
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poll_answers = @poll_question.poll_answers
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delete_answer = poll_answers.find_by(answer_position: answer_d_id)
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left_answers = poll_answers.where("answer_position > ?",answer_d_id)
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left_answers.update_all("answer_position = answer_position - 1") if left_answers
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if delete_answer.destroy
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normal_status(0, "答案删除成功！")
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else
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normal_status(-1, "答案删除失败！")
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end
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("答案删除失败！")
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end
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end
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end
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def destroy
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ActiveRecord::Base.transaction do
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begin
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question_d_id = @poll_question.question_number.to_i #问题的当前位置
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poll_questions = @poll.poll_questions
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left_questions = poll_questions.insert_question(question_d_id)
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left_questions.update_all("question_number = question_number - 1") if left_questions
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@poll_question.destroy!
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normal_status("删除成功")
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("问题删除失败！")
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end
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end
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end
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def up_down
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ActiveRecord::Base.transaction do
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begin
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opr = params[:opr]
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current_q_p = @poll_question.question_number.to_i #问题的当前位置
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if @poll.polls_status.to_i == 1
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if opr.present?
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if opr.to_s == "up"
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last_q_p = @poll.poll_questions.find_by(question_number: (current_q_p-1)) #当前问题的前一个问题
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if last_q_p.present?
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@poll_question.update_attribute("question_number", (current_q_p - 1))
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last_q_p.update_attribute("question_number", current_q_p) # 重新获取当前问题的位置
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normal_status(0, "问题上移成功！")
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else
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normal_status(-1, "移动失败，已经是第一个问题了！")
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end
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elsif opr.to_s == "down"
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next_q_p = @poll.poll_questions.find_by(question_number: (current_q_p+1)) #当前问题的后一个问题
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if next_q_p.present?
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@poll_question.update_attribute("question_number", (current_q_p + 1))
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next_q_p.update_attribute("question_number", current_q_p)
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normal_status(0, "问题下移成功！")
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else
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normal_status(-1, "移动失败，已经是最后一个问题了！")
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end
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end
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else
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normal_status(-1, "移动失败，请输入参数")
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end
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else
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normal_status(-1,"已发布的不能移动问题")
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end
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("问题移动失败！")
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end
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end
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end
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private
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def poll_questions_params
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params.require(:poll_question).permit(:question_title,:question_type,:is_necessary,:question_number,:max_choices,:min_choices)
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end
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def validates_params
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normal_status(-1, "问题标题不能为空！") if params[:question_title].blank?
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normal_status(-1, "是否要求必答的值不能为空！") if params[:is_necessary].blank?
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normal_status(-1, "问题类型不能为空！") if params[:question_type].blank?
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if params[:min_choices].present? && params[:max_choices].present? && (params[:min_choices].to_i > params[:max_choices].to_i)
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normal_status(-1, "最小可选不能大于最大可选！")
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elsif params[:question_answers].present? && (params[:max_choices].to_i > params[:question_answers].count)
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normal_status(-1, "选择题的最大可选项不能大于答案数！")
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elsif [1,3].include?(params[:question_type]) && (params[:max_choices].to_i > 0 || params[:min_choices].to_i > 0)
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normal_status(-1, "单选题或主观题不能有最大或最小选择数！")
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elsif params[:question_type] == 3 && (params[:question_answers] || params[:question_other_answer])
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normal_status(-1, "主观问题不需要可选答案！")
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elsif params[:question_type] != 3
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if params[:question_answers].present? && params[:question_answers].include?("")
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normal_status(-1, "选择题不能有空值！")
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elsif params[:question_other_answer].present? && params[:question_other_answer].length > 0
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normal_status(-1, "其他选项不能有值！")
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elsif params[:question_type] == 1 && params[:question_answers].count < 2
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normal_status(-1, "单选题选项不能小于2！")
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elsif params[:question_type] == 2 && params[:question_answers].count < 3
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normal_status(-1, "多选题选项不能小于3！")
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end
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end
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end
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def validates_update_params
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question_a_count = params[:question_answers].present? ? params[:question_answers].count : 0
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question_o_count = params[:question_other_answer].present? ? params[:question_other_answer].count : 0
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normal_status(-1, "已发布的问卷不允许增删答案！") if (((question_a_count+question_o_count) != @poll_current_answers) && (@poll.polls_status.to_i != 1))
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end
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def get_poll
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@poll = Poll.find_by(id:params[:poll_id])
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if @poll.blank?
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tip_exception(404)
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end
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end
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def get_poll_questions_count
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if @poll.poll_questions.count > 0
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@poll_ques_count = @poll.poll_questions.count
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else
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@poll_ques_count = 0
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end
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end
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def get_poll_question
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@poll_question = PollQuestion.find_by(id: params[:id])
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if @poll_question.present?
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@poll = Poll.find_by(id:@poll_question.poll_id)
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else
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tip_exception(404)
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end
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end
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#获取问题的答案数量
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def get_poll_question_answers
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@poll_current_answers = @poll_question.poll_answers.count
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end
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# 已发布的问卷不能新增题目
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def check_poll_status
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normal_status(-1, "问卷已发布，不能更改问卷题目") if @poll.polls_status.to_i != 1
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end
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def is_course_teacher
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@course = @poll.course
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if @course.blank?
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tip_exception(404)
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else
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@identity = current_user.course_identity(@course)
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normal_status(-1, "权限不够") unless(@course.present? && @identity < Course::STUDENT) #课堂存在，且当前用户为教师/管理员
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end
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end
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end
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