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module NutrientsHelper
NUTRIENTS = %i[nno3 p k ca mg s na cl si fe zn b mn cu mo nnh4].freeze
def percent_delta(measured, target)
return 0.0 if target.to_f.zero?
((measured.to_f - target.to_f) / target.to_f) * 100.0
end
def fmt(v)
number_with_precision(v, precision: 2, strip_insignificant_zeros: true)
end
def delta_badge_class(delta)
d = delta.abs
case d
when d < 0 then "bg-info"
when 0..5 then "bg-secondary"
else "bg-warning"
end
end
end
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