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class CourseModule < ApplicationRecord
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default_scope { order("course_modules.position ASC") }
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belongs_to :course
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# 二级目录
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has_many :course_second_categories
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validates :module_name, length: { maximum: 20 }
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scope :not_hidden, -> { where(hidden: 0) }
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scope :graduation_module, -> { where(module_type: "graduation") }
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scope :graduation_module_not_hidden, -> { graduation_module.where(hidden: 0) }
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scope :board_module, -> { where(module_type: 'board') }
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scope :attachment_module, -> { includes(:course_second_categories).where(module_type: 'attachment') }
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scope :common_homework_module, -> { where(module_type: 'common_homework') }
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scope :group_homework_module, -> { where(module_type: 'group_homework') }
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scope :shixun_homework_module, -> { where(module_type: 'shixun_homework') }
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scope :search_by_module_type, -> (type) {where(module_type:type)}
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# 课堂模块的子目录
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def course_second_categories
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if module_type == "graduation" && CourseSecondCategory.where(course_module_id: self.id).count == 0
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CourseSecondCategory.create!(course_module_id: self.id, course_id: self.course_id, name: "毕设选题", category_type: "graduation", position: 1)
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CourseSecondCategory.create!(course_module_id: self.id, course_id: self.course_id, name: "毕设任务", category_type: "graduation", position: 2)
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end
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CourseSecondCategory.where(course_module_id: self.id)
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end
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end
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