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65 lines
2.2 KiB
65 lines
2.2 KiB
6 years ago
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class CourseGroupsController < ApplicationController
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before_action :require_login
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before_action :set_group, except: [:create]
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before_action :find_course, only: [:create]
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before_action :teacher_allowed
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def create
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tip_exception("分班名称不能为空") if params[:name].blank?
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if @course.course_groups.where(name: params[:name]).count > 0
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normal_status(-1, "已存在同名分班")
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else
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@course.course_groups.create!(name: params[:name], position: @course.course_groups.count + 1)
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normal_status(0, "创建成功")
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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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@course.course_groups.where("position > #{@group.position}").update_all("position = position - 1")
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# 将该分班的学生转到未分班
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@group.course_members.update_all(course_group_id: 0)
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@group.destroy
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rescue Exception => e
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uid_logger_error(e.message)
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tip_exception("删除分班失败")
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end
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end
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end
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# 分班重命名
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def rename_group
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tip_exception("名称不能为空") if params[:name].blank?
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if @course.course_groups.where(name: params[:name]).count > 0
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normal_status(-1, "已存在同名分班")
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else
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@group.update_attributes(name: params[:name].strip)
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normal_status(0, "更新成功")
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end
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end
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# 分班的拖动
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def move_category
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tip_exception("移动失败") if params[:position].blank?
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unless params[:position].to_i == @group.position
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if params[:position].to_i < @group.position
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@course.course_groups.where("position < #{@group.position} and position >= ?", params[:position]).update_all("position = position + 1")
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else
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@course.course_groups.where("position > #{@group.position} and position <= ?", params[:position]).update_all("position = position - 1")
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end
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@group.update_attributes(position: params[:position])
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normal_status(0, "移动成功")
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else
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normal_status(-1, "位置没有变化")
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end
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end
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private
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def set_group
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@group = CourseGroup.find_by!(id: params[:id])
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@course = @group.course
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end
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end
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