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# frozen_string_literal: true
module Ml
class Experiment < ApplicationRecord
include AtomicInternalId
PACKAGE_PREFIX = 'ml_experiment_'
validates :name, :project, presence: true
validates :name, uniqueness: { scope: :project, message: "should be unique in the project" }
belongs_to :project
belongs_to :user
belongs_to :model, optional: true, inverse_of: :default_experiment
has_many :candidates, class_name: 'Ml::Candidate'
has_many :metadata, class_name: 'Ml::ExperimentMetadata'
scope :with_candidate_count, -> {
left_outer_joins(:candidates)
.select("ml_experiments.*, count(ml_candidates.id) as candidate_count")
.group(:id)
}
has_internal_id :iid, scope: :project
before_destroy :stop_destroy
def package_name
"#{PACKAGE_PREFIX}#{iid}"
end
def stop_destroy
return unless model_id
errors[:base] << "Cannot delete an experiment associated to a model"
# According to docs, throw is the correct way to stop on a callback
# https://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html#module-ActiveRecord::Callbacks-label-Canceling+callbacks
throw :abort # rubocop:disable Cop/BanCatchThrow
end
class << self
def by_project_id_and_iid(project_id, iid)
find_by(project_id: project_id, iid: iid)
end
def by_project_id_and_name(project_id, name)
find_by(project_id: project_id, name: name)
end
def by_project_id(project_id)
where(project_id: project_id).order(id: :desc)
end
def package_for_experiment?(package_name)
return false unless package_name&.starts_with?(PACKAGE_PREFIX)
iid = package_name.delete_prefix(PACKAGE_PREFIX)
numeric?(iid)
end
private
def numeric?(value)
value.match?(/\A\d+\z/)
end
end
end
end
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