Files
codeocean/app/models/code_ocean/file.rb
2018-11-06 16:46:00 +01:00

123 lines
3.9 KiB
Ruby

require File.expand_path('../../../uploaders/file_uploader', __FILE__)
require File.expand_path('../../../../lib/active_model/validations/boolean_presence_validator', __FILE__)
module CodeOcean
class FileNameValidator < ActiveModel::Validator
def validate(record)
existing_files = File.where(name: record.name, path: record.path, file_type_id: record.file_type_id,
context_id: record.context_id, context_type: record.context_type).to_a
unless existing_files.empty?
if (not record.context.is_a?(Exercise)) || (record.context.new_record?)
record.errors[:base] << 'Duplicate'
end
end
end
end
class File < ApplicationRecord
include DefaultValues
DEFAULT_WEIGHT = 1.0
ROLES = %w(main_file reference_implementation regular_file teacher_defined_test user_defined_file user_defined_test)
TEACHER_DEFINED_ROLES = ROLES - %w(user_defined_file)
after_initialize :set_default_values
before_validation :clear_weight, unless: :teacher_defined_test?
before_validation :hash_content, if: :content_present?
before_validation :set_ancestor_values, if: :incomplete_descendent?
belongs_to :context, polymorphic: true
belongs_to :file, class_name: 'CodeOcean::File', optional: true # This is only required for submissions and is validated below
alias_method :ancestor, :file
belongs_to :file_type
has_many :files, class_name: 'CodeOcean::File'
has_many :testruns
has_many :comments
alias_method :descendants, :files
mount_uploader :native_file, FileUploader
scope :editable, -> { where(read_only: false) }
scope :visible, -> { where(hidden: false) }
ROLES.each do |role|
scope :"#{role}s", -> { where(role: role) }
end
default_scope { order(name: :asc) }
validates :feedback_message, if: :teacher_defined_test?, presence: true
validates :feedback_message, absence: true, unless: :teacher_defined_test?
validates :file_type_id, presence: true
validates :hashed_content, if: :content_present?, presence: true
validates :hidden, boolean_presence: true
validates :name, presence: true
validates :read_only, boolean_presence: true
validates :role, inclusion: {in: ROLES}
validates :weight, if: :teacher_defined_test?, numericality: true, presence: true
validates :weight, absence: true, unless: :teacher_defined_test?
validates :file, presence: true if :context.is_a?(Submission)
validates_with FileNameValidator, fields: [:name, :path, :file_type_id]
ROLES.each do |role|
define_method("#{role}?") { self.role == role }
end
def ancestor_id
file_id || id
end
def clear_weight
self.weight = nil
end
private :clear_weight
def content_present?
content? || native_file?
end
private :content_present?
def filepath
if path.present?
::File.join(path, name_with_extension)
else
name_with_extension
end
end
def hash_content
self.hashed_content = Digest::MD5.new.hexdigest(file_type.try(:binary?) ? ::File.new(native_file.file.path, 'r').read : content)
end
private :hash_content
def incomplete_descendent?
file_id.present? && file_type_id.blank?
end
private :incomplete_descendent?
def name_with_extension
name + (file_type.file_extension || '')
end
def set_ancestor_values
[:feedback_message, :file_type_id, :hidden, :name, :path, :read_only, :role, :weight].each do |attribute|
send(:"#{attribute}=", ancestor.send(attribute))
end
end
private :set_ancestor_values
def set_default_values
set_default_values_if_present(content: '', hidden: false, read_only: false)
set_default_values_if_present(weight: DEFAULT_WEIGHT) if teacher_defined_test?
end
private :set_default_values
def visible
!hidden
end
end
end