137 lines
4.4 KiB
Ruby
137 lines
4.4 KiB
Ruby
class Measurement < ActiveRecord::Base
|
|
belongs_to :project, required: true
|
|
belongs_to :source, required: false
|
|
|
|
has_many :readouts, inverse_of: :measurement, dependent: :destroy, validate: true
|
|
validates :readouts, presence: true
|
|
accepts_nested_attributes_for :readouts, allow_destroy: true, reject_if: proc { |attrs|
|
|
attrs['quantity_id'].blank? && attrs['value'].blank?
|
|
}
|
|
# Readout quantity_id + unit_id uniqueness validation. Cannot be effectively
|
|
# checked on Readout model level.
|
|
validate do
|
|
quantities = self.readouts.map do |r|
|
|
[r.quantity_id, r.unit_id] unless r.marked_for_destruction?
|
|
end
|
|
if quantities.length != quantities.uniq.length
|
|
errors.add(:readouts, :duplicated_quantity_unit_pair)
|
|
end
|
|
end
|
|
|
|
validates :name, presence: true
|
|
validates :taken_at, presence: true
|
|
|
|
after_initialize do
|
|
if new_record?
|
|
self.hidden = false if self.hidden.nil?
|
|
self.taken_at = Time.now
|
|
end
|
|
end
|
|
|
|
def toggle_hidden!
|
|
self.toggle!(:hidden)
|
|
end
|
|
|
|
def taken_at_date
|
|
self.taken_at.getlocal
|
|
end
|
|
def taken_at_date=(value)
|
|
self.taken_at = Time.parse(value, self.taken_at)
|
|
end
|
|
|
|
def taken_at_time
|
|
self.taken_at.getlocal
|
|
end
|
|
def taken_at_time=(value)
|
|
self.taken_at = Time.parse(value, self.taken_at)
|
|
end
|
|
|
|
def self.filter(filters, requested_q = Quantity.none)
|
|
measurements = all.where(filters[:scope])
|
|
|
|
if filters[:name].present?
|
|
measurements = measurements.where("name LIKE ?", "%#{filters[:name]}%")
|
|
end
|
|
|
|
project = proxy_association.owner
|
|
formula_q = if filters[:readouts].present?
|
|
project.quantities.new(name: '__internal_q',
|
|
formula: filters[:readouts],
|
|
domain: :measurement)
|
|
end
|
|
apply_formula = formula_q.present? && formula_q.valid?
|
|
|
|
result =
|
|
if !requested_q.empty? || apply_formula
|
|
computed = measurements.compute_nutrients(requested_q, apply_formula && formula_q)
|
|
requested_q.present? ? computed : [computed[0]]
|
|
else
|
|
[measurements]
|
|
end
|
|
result.push(formula_q)
|
|
end
|
|
|
|
def self.compute_nutrients(requested_q, filter_q = nil)
|
|
ingredients = all
|
|
unchecked_q = requested_q.map { |q| [q, nil] }
|
|
unchecked_q << [filter_q, nil] if filter_q
|
|
|
|
nutrients = Hash.new { |h,k| h[k] = {} }
|
|
Nutrient.where(ingredient: ingredients).includes(:quantity, :unit)
|
|
.order('quantities.lft')
|
|
.pluck('quantities.name', :ingredient_id, :amount, 'units.shortname')
|
|
.each { |q_name, i_id, a, u_id| nutrients[q_name][i_id] = [a, u_id] }
|
|
|
|
extra_q = nutrients.keys - requested_q.pluck(:name)
|
|
|
|
completed_q = {}
|
|
# FIXME: loop should finish unless there is circular dependency in formulas
|
|
# for now we don't guard against that
|
|
while !unchecked_q.empty?
|
|
q, deps = unchecked_q.shift
|
|
|
|
# quantity not computable (no formula) or not requiring calculation/computed
|
|
if q.formula.blank? || (nutrients[q.name].length == ingredients.count)
|
|
completed_q[q.name] = nutrients.delete(q.name) { {} }
|
|
next
|
|
end
|
|
|
|
# quantity with formula requires refresh of dependencies availability
|
|
if deps.nil? || !deps.empty?
|
|
deps ||= q.formula_quantities
|
|
deps.reject! { |q| completed_q.has_key?(q.name) }
|
|
deps.each { |q| unchecked_q << [q, nil] unless unchecked_q.index { |u| u[0] == q } }
|
|
end
|
|
|
|
# quantity with formula has all dependencies satisfied, requires calculation
|
|
if deps.empty?
|
|
input_q = q.formula_quantities
|
|
inputs = ingredients.select { |i| nutrients[q.name][i.id].nil? }.map do |i|
|
|
[
|
|
i,
|
|
input_q.map do |i_q|
|
|
nutrient_data = completed_q[i_q.name][i.id] || [nil, nil]
|
|
[i_q.name, nutrient_data[0]]
|
|
end.to_h
|
|
]
|
|
end
|
|
q.calculate(inputs).each { |i, result| nutrients[q.name][i.id] = result }
|
|
unchecked_q.unshift([q, deps])
|
|
next
|
|
end
|
|
|
|
# quantity still has unsatisfied dependencies, move to the end of queue
|
|
unchecked_q << [q, deps]
|
|
end
|
|
|
|
all_q = nutrients.merge(completed_q)
|
|
[
|
|
filter_q ? ingredients.to_a.keep_if { |i| all_q[filter_q.name][i.id][0] } : ingredients,
|
|
ingredients.map { |i| requested_q.map { |q| [q.name, all_q[q.name][i.id]] } },
|
|
ingredients.map do |i|
|
|
extra_q.map { |q_name| [q_name, all_q[q_name][i.id]] if all_q[q_name][i.id] }
|
|
end
|
|
]
|
|
end
|
|
end
|