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17 lines
411 B
17 lines
411 B
6 years ago
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class Ecs::LinkCourseService < ApplicationService
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Error = Class.new(StandardError)
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attr_reader :ec_course, :params
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def initialize(ec_course, params)
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@ec_course = ec_course
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@params = params
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end
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def call
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course = Course.find_by(id: params[:course_id])
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raise Error, '课程不存在' if course.blank?
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ec_course.ec_major_courses.create!(course: course)
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end
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end
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