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53 lines
1.1 KiB
53 lines
1.1 KiB
6 years ago
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class Users::CourseService
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include CustomSortable
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sort_columns :updated_at, default_by: :updated_at, default_direction: :desc
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attr_reader :user, :params
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def initialize(user, params)
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@user = user
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@params = params
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end
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def call
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courses = category_scope_courses.deleted(false)
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courses = status_filter(courses)
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custom_sort(courses, :updated_at, params[:sort_direction])
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end
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private
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def category_scope_courses
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case params[:category]
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when 'study' then
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user.as_student_courses
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when 'manage' then
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user.manage_courses
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else
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ids = user.as_student_courses.pluck(:id) + user.manage_courses.pluck(:id)
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Course.where(id: ids)
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end
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end
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def status_filter(relations)
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# 只有自己查看才有过滤
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return relations unless observed_logged_user?
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case params[:status]
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when 'processing' then
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relations.ended(false)
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when 'end' then
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relations.ended(true)
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else
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relations
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end
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end
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def observed_logged_user?
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User.current.id == user.id
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end
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end
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