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class ExerciseUser < ApplicationRecord
belongs_to :user
belongs_to :exercise
scope :commit_exercise_by_status , lambda { | s | where ( commit_status : s ) }
scope :exercise_user_committed , - > { where ( " commit_status != ? " , 0 ) }
scope :current_exercise_user , lambda { | user_id , exercise_id | where ( user_id : user_id , exercise_id : exercise_id ) }
scope :exercise_commit_users , lambda { | user_ids | where ( user_id : user_ids ) }
scope :exercise_review , - > { where ( " subjective_score >= ? " , 0 . 0 ) } #已评阅，测试版的不一样是因为测试版的 主观题默认为0。0分，
scope :exercise_unreview , - > { where ( " subjective_score < ? " , 0 . 0 ) } #未评阅
scope :search_by_exercise , lambda { | ids | where ( exercise_id : ids ) } #根据试卷来查找
end
