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43 lines
1.2 KiB
43 lines
1.2 KiB
6 years ago
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class Ecs::CreateCourseService < ApplicationService
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Error = Class.new(StandardError)
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attr_reader :ec_year, :params
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def initialize(ec_year, params)
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@ec_year = ec_year
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@params = params
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end
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def call
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name = params[:name].to_s.strip
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if ec_year.ec_courses.exists?(name: name)
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raise Error, '课程名称重复'
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end
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ec_course = nil
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ActiveRecord::Base.transaction do
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ec_course = ec_year.ec_courses.create!(name: name)
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create_default_score_levels!(ec_course)
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end
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ec_course
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end
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private
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def create_default_score_levels!(ec_course)
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EcScoreLevel.bulk_insert(:ec_course_id, :score, :level, :position) do |worker|
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[
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{ ec_course_id: ec_course.id, score: 90, level: '优秀', position: 1 },
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{ ec_course_id: ec_course.id, score: 80, level: '良好', position: 2 },
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{ ec_course_id: ec_course.id, score: 70, level: '中等', position: 3 },
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{ ec_course_id: ec_course.id, score: 60, level: '及格', position: 4 },
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{ ec_course_id: ec_course.id, score: 60, level: '不及格', position: 5 },
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].each do |attributes|
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worker.add attributes
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end
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end
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end
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end
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