Class: Observation::Continuous

Inherits:
Observation show all
Defined in:
app/models/observation/continuous.rb

Instance Attribute Summary

Attributes inherited from Observation

#cached, #cached_column_label, #cached_row_label, #character_state_id, #continuous_unit, #continuous_value, #day_made, #descriptions, #descriptor_id, #frequency, #month_made, #observation_object_global_id, #observation_object_id, #observation_object_type, #presence, #sample_max, #sample_mean, #sample_median, #sample_min, #sample_n, #sample_standard_deviation, #sample_standard_error, #sample_standard_units, #time_made, #type, #year_made

Instance Method Summary collapse

Methods inherited from Observation

by_matrix_and_position, by_observation_matrix_row, code_column, #continuous?, copy, destroy_column, destroy_row, human_name, in_observation_matrix, object_scope, #presence_absence?, #qualitative?, #type_matches_descriptor

Methods included from Shared::IsData

#errors_excepting, #full_error_messages_excepting, #identical, #is_community?, #is_destroyable?, #is_editable?, #is_in_use?, #is_in_users_projects?, #metamorphosize, #similar

Methods included from Shared::ProtocolRelationships

#protocolled?, #reject_protocols

Methods included from Shared::Depictions

#has_depictions?, #image_array=, #reject_depictions, #reject_images

Methods included from Shared::Notes

#concatenated_notes_string, #reject_notes

Methods included from Shared::DataAttributes

#import_attributes, #internal_attributes, #keyword_value_hash, #reject_data_attributes

Methods included from Housekeeping

#has_polymorphic_relationship?

Methods inherited from ApplicationRecord

transaction_with_retry

Instance Method Details

#+(observation) ⇒ Object

Use Ruby Units to add



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# File 'app/models/observation/continuous.rb', line 19

def +(observation)
  a = unit + observation.unit
  continuous_unit && descriptor.default_unit ? a.convert_to(descriptor.default_unit) : a
end

#-(observation) ⇒ Object 



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# File 'app/models/observation/continuous.rb', line 24

def -(observation)
  a = unit - observation.unit
  continuous_unit && descriptor.default_unit ? a.convert_to(descriptor.default_unit) : a
end

#converted_value ⇒ Float

Return the value converted to the default of the descriptor If provided

Returns:

  • (Float) —

    return the value converted to the default of the descriptor If provided



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# File 'app/models/observation/continuous.rb', line 31

def converted_value
  if continuous_unit && descriptor.default_unit
    unit.convert_to(descriptor.default_unit).scalar.to_f # TODO: experiment with this
  elsif continuous_unit
    unit.scalar
  else
    continuous_value
  end
end

#unit ⇒ Unit

Returns and instance of ruby-unit.

Returns:

  • (Unit) —

    and instance of ruby-unit



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# File 'app/models/observation/continuous.rb', line 14

def unit
  ::RubyUnits::Unit.new(continuous_value.to_s + ' ' + continuous_unit)
end

#units_compatible ⇒ Object (protected) 



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# File 'app/models/observation/continuous.rb', line 43

def units_compatible
  if descriptor && descriptor.default_unit && !continuous_unit.blank?
    # The =~ operator checks for convertability here.
    errors.add(:continuous_unit, 'units incompatible with descriptor default') unless unit =~ descriptor.unit
  end
end