89 lines
2.7 KiB
Ruby
89 lines
2.7 KiB
Ruby
require File.expand_path('../../../uploaders/file_uploader', __FILE__)
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module CodeOcean
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class File < ActiveRecord::Base
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include DefaultValues
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DEFAULT_WEIGHT = 1.0
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ROLES = %w(main_file reference_implementation regular_file teacher_defined_test user_defined_file user_defined_test)
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TEACHER_DEFINED_ROLES = ROLES - %w(user_defined_file)
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after_initialize :set_default_values
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before_validation :set_ancestor_values, if: :incomplete_descendent?
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before_validation :hash_content, if: :content_present?
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belongs_to :context, polymorphic: true
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belongs_to :execution_environment
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belongs_to :file
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alias_method :ancestor, :file
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belongs_to :file_type
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has_many :files
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alias_method :descendants, :files
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mount_uploader :native_file, FileUploader
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scope :editable, -> { where(read_only: false) }
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scope :visible, -> { where(hidden: false) }
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ROLES.each do |role|
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scope :"#{role}s", -> { where(role: role) }
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end
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validates :feedback_message, if: :teacher_defined_test?, presence: true
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validates :feedback_message, absence: true, unless: :teacher_defined_test?
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validates :file_type_id, presence: true
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validates :hashed_content, if: :content_present?, presence: true
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validates :hidden, inclusion: {in: [true, false]}
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validates :name, presence: true
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validates :read_only, inclusion: {in: [true, false]}
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validates :role, inclusion: {in: ROLES}
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validates :weight, if: :teacher_defined_test?, numericality: true, presence: true
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validates :weight, absence: true, unless: :teacher_defined_test?
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ROLES.each do |role|
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define_method("#{role}?") { self.role == role }
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end
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def ancestor_id
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file_id || id
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end
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def content_present?
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content? || native_file?
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end
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private :content_present?
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def hash_content
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self.hashed_content = Digest::MD5.new.hexdigest(file_type.binary? ? ::File.new(native_file.file.path, 'r').read : content)
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end
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private :hash_content
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def incomplete_descendent?
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file_id.present? && file_type_id.blank?
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end
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private :incomplete_descendent?
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def name_with_extension
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name + (file_type.file_extension || '')
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end
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def set_ancestor_values
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[:feedback_message, :file_type_id, :hidden, :name, :path, :read_only, :role, :weight].each do |attribute|
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send(:"#{attribute}=", ancestor.send(attribute))
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end
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end
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private :set_ancestor_values
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def set_default_values
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set_default_values_if_present(content: '', hidden: false, read_only: false)
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set_default_values_if_present(weight: DEFAULT_WEIGHT) if teacher_defined_test?
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end
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private :set_default_values
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def visible
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!hidden
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end
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end
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end
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