81 lines
2.3 KiB
Ruby
81 lines
2.3 KiB
Ruby
class Measurement < ActiveRecord::Base
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belongs_to :project, required: true
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belongs_to :source, required: false
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has_many :readouts, inverse_of: :measurement, dependent: :destroy, validate: true
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validates :readouts, presence: true
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accepts_nested_attributes_for :readouts, allow_destroy: true, reject_if: proc { |attrs|
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attrs['quantity_id'].blank? && attrs['value'].blank?
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}
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# Readout quantity_id + unit_id uniqueness validation. Cannot be effectively
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# checked on Readout model level.
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validate do
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quantities = self.readouts.reject { |r| r.marked_for_destruction? }
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.map { |r| [r.quantity_id, r.unit_id] }
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if quantities.length != quantities.uniq.length
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errors.add(:readouts, :duplicated_quantity_unit_pair)
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end
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end
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validates :name, presence: true
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validates :taken_at, presence: true
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after_initialize do
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if new_record?
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self.taken_at = Time.now
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end
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end
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after_create :seed_column_view, if: -> {self.column_view.quantities.count == 0}
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after_save :cleanup_column_view, if: :name_changed?
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# Destroy ColumnView after last Measurement destruction
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after_destroy do
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unless self.project.measurements.exists?(name: self.name)
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self.column_view.destroy!
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end
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end
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def column_view
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self.project.column_views
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.find_or_create_by(name: self.name, domain: ColumnView.domains[:measurement])
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end
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def taken_at_date
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self.taken_at.getlocal
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end
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def taken_at_date=(value)
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self.taken_at = Time.parse(value, self.taken_at)
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end
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def taken_at_time
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self.taken_at.getlocal
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end
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def taken_at_time=(value)
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self.taken_at = Time.parse(value, self.taken_at)
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end
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private
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def seed_column_view
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quantities = self.project.quantities.joins(:readouts).includes(readouts: [:measurement])
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.where(measurements: {name: self.name}).first(6)
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self.column_view.quantities.append(quantities)
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self.column_view.save!
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end
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# Copy/rename ColumnView on Measurement rename
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def cleanup_column_view
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old_column_view = self.project.column_views
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.find_by(name: self.name_was, domain: ColumnView.domains[:measurement])
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return unless old_column_view
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if self.project.measurements.exists?(name: self.name_was)
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self.column_view.quantities.append(old_column_view.quantities)
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self.column_view.save!
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else
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old_column_view.update!(name: self.name)
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end
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end
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end
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